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Mon, 09 Feb 2026 19:05:01 -0800 (PST) List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org MIME-Version: 1.0 From: Emil Tsalapatis Date: Mon, 9 Feb 2026 22:04:51 -0500 X-Gm-Features: AZwV_Qh01BjD0LcHPknHlQ5uBKKOIa6wmE8FI6BenZdIEEHYx0MsJjTN4w8HZbs Message-ID: Subject: RFC: Kernel virtiofs driver To: Virtualisation on FreeBSD Content-Type: multipart/alternative; boundary="000000000000823f05064a6f8508" X-Spamd-Result: default: False [-4.50 / 15.00]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; ARC_ALLOW(-1.00)[google.com:s=arc-20240605:i=1]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-0.998]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; R_DKIM_ALLOW(-0.20)[etsalapatis-com.20230601.gappssmtp.com:s=20230601]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; RCPT_COUNT_ONE(0.00)[1]; MISSING_XM_UA(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; RCVD_COUNT_ONE(0.00)[1]; FROM_HAS_DN(0.00)[]; DMARC_NA(0.00)[etsalapatis.com]; TO_DN_ALL(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::b12b:from]; RCVD_TLS_LAST(0.00)[]; MLMMJ_DEST(0.00)[freebsd-virtualization@freebsd.org]; PREVIOUSLY_DELIVERED(0.00)[freebsd-virtualization@freebsd.org]; DKIM_TRACE(0.00)[etsalapatis-com.20230601.gappssmtp.com:+] X-Rspamd-Queue-Id: 4f95yq613Cz3SsD X-Spamd-Bar: ---- --000000000000823f05064a6f8508 Content-Type: text/plain; charset="UTF-8" Hi everyone, I recently finished the virtiofs driver and it is now ready for review. The device allows for sharing directories between a FreeBSD guest and a host. The driver really is two components: 1) The virtio device that sends FUSE tickets to and from the host: D46295 2) The file system that gets mounted in the guest: D46296 . To test it you need a couple additional fixes/workarounds for FUSE-related issues. You can grab a working tree here or apply diffs D55047 and D55046 . D55046 is a workaround, but still prevents an assertion failure related to FUSE caching until the underlying issue is properly fixed on HEAD. To use it, make sure you are creating virtiofs device on the host then from the FreeBSD guest run mount -t virtiofs where is the name tag you gave to the virtiofs device in the host VMM. Reviews and testing welcome! Thanks, Emil --000000000000823f05064a6f8508 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi everyone,

=C2=A0 =C2=A0 I = recently finished the virtiofs driver and it is now ready for review. The d= evice allows for sharing directories between a FreeBSD guest and a host.
The driver really is two components:

1) The virtio = device that sends FUSE tickets to and from the host: D46295
2) The file= system that gets mounted in the guest: D46296.

To test it you need a couple additional fixes/workarounds for FUSE-relat= ed issues. You can grab a working tree here or apply diffs D55047 and D55046. D55046 is a workaround, but=20 still prevents an assertion failure related to FUSE caching until the under= lying issue is properly fixed on HEAD.=C2=A0

To us= e it, make sure you are creating virtiofs device on the host then from the = FreeBSD guest run

mount -t virtiofs <tag> &l= t;mountpoint>

where <tag> is the name tag= you gave to the virtiofs device in the host VMM.

= Reviews and testing welcome!

Thanks,
Emi= l


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Mon, 09 Feb 2026 22:57:38 -0800 (PST) List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org MIME-Version: 1.0 References: In-Reply-To: From: Mario Marietto Date: Tue, 10 Feb 2026 07:57:02 +0100 X-Gm-Features: AZwV_QgQrX2zithyyUBYCeKPL2mWXUkEBPcQIE1MOeEzsH0LiSMg9R7sII9aFf8 Message-ID: Subject: Re: RFC: Kernel virtiofs driver To: Emil Tsalapatis , FreeBSD virtualization Content-Type: multipart/alternative; boundary="0000000000006606c9064a72c51f" X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US] X-Rspamd-Queue-Id: 4f9C792BxXz3qNs X-Spamd-Bar: ---- --0000000000006606c9064a72c51f Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hello Emil, Inside a FreeBSD guest OS (15.0-RELEASE) I do : kldload virtio_p9fs kldload p9fs_load mount -t p9fs sharename /mnt/host This works for me,I can share files between FreeBSD 15.0 guest and FreeBSD 14.3 host os. So,what's missing in this case and which features you added ? Thanks. On Tue, Feb 10, 2026 at 4:05=E2=80=AFAM Emil Tsalapatis wrote: > Hi everyone, > > I recently finished the virtiofs driver and it is now ready for > review. The device allows for sharing directories between a FreeBSD guest > and a host. > > The driver really is two components: > > 1) The virtio device that sends FUSE tickets to and from the host: D46295 > > 2) The file system that gets mounted in the guest: D46296 > . > > To test it you need a couple additional fixes/workarounds for FUSE-relate= d > issues. You can grab a working tree here > or apply diffs D5504= 7 > and D55046 > . D55046 is a workaround, but still > prevents an assertion failure related to FUSE caching until the underlyin= g > issue is properly fixed on HEAD. > > To use it, make sure you are creating virtiofs device on the host then > from the FreeBSD guest run > > mount -t virtiofs > > where is the name tag you gave to the virtiofs device in the host > VMM. > > Reviews and testing welcome! > > Thanks, > Emil > > > --=20 Mario. --0000000000006606c9064a72c51f Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Hello Emil,

Inside a FreeBSD guest OS (15.0-RELEASE) I do :

kldload virtio_p9fs=C2=A0

kldload=C2=A0<= /span>p9fs_load

mount -t p9fs sharename /mnt/host

=

This works for me,= I can share files between FreeBSD 15.0 guest and FreeBSD 14.3 host os. So,w= hat's missing in this case and which features you added ?=

Thanks.



On Tue, Feb 10, 20= 26 at 4:05=E2=80=AFAM Emil Tsalapatis <emil@etsalapatis.com> wrote:
Hi everyo= ne,

=C2=A0 =C2=A0 I recently finished the virtiofs driver and it is = now ready for review. The device allows for sharing directories between a F= reeBSD guest and a host.

The driver really is two components:=

1) The virtio device that sends FUSE tickets to and from the h= ost: D4629= 5
2) The file system that gets mounted in the guest: D46296.
=

To test it you need a couple additional fixe= s/workarounds for FUSE-related issues. You can grab a working tree h= ere or apply diffs D55047 and D55046. D55046 is a workaro= und, but=20 still prevents an assertion failure related to FUSE caching until the under= lying issue is properly fixed on HEAD.=C2=A0

To us= e it, make sure you are creating virtiofs device on the host then from the = FreeBSD guest run

mount -t virtiofs <tag> &l= t;mountpoint>

where <tag> is the name tag= you gave to the virtiofs device in the host VMM.

= Reviews and testing welcome!

Thanks,
Emi= l




--
Ma= rio.
--0000000000006606c9064a72c51f-- From nobody Tue Feb 10 16:44:00 2026 X-Original-To: freebsd-virtualization@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4f9S805psXz6RcML for ; Tue, 10 Feb 2026 16:44:16 +0000 (UTC) (envelope-from biancalana@gmail.com) Received: from mail-ot1-x331.google.com (mail-ot1-x331.google.com [IPv6:2607:f8b0:4864:20::331]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "WR4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4f9S7z5Wgtz3VJV for ; Tue, 10 Feb 2026 16:44:15 +0000 (UTC) (envelope-from biancalana@gmail.com) Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20230601 header.b=fSXHEun4; dmarc=pass (policy=none) header.from=gmail.com; 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Tue, 10 Feb 2026 08:44:12 -0800 (PST) List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org MIME-Version: 1.0 From: Alexandre Biancalana Date: Tue, 10 Feb 2026 13:44:00 -0300 X-Gm-Features: AZwV_QhqScIrQmOEWC8fvTAkrdeX4-VPjVdg9WUe-gxM5YW-NJ78HCGN2jU1jHU Message-ID: Subject: Unable to boot recent linux with grub To: freebsd-virtualization@freebsd.org Content-Type: text/plain; charset="UTF-8" X-Spamd-Result: default: False [-4.59 / 15.00]; ARC_ALLOW(-1.00)[google.com:s=arc-20240605:i=1]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.59)[-0.588]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20230601]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36:c]; MIME_GOOD(-0.10)[text/plain]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCVD_TLS_LAST(0.00)[]; FROM_HAS_DN(0.00)[]; MIME_TRACE(0.00)[0:+]; RCPT_COUNT_ONE(0.00)[1]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; FREEMAIL_FROM(0.00)[gmail.com]; DKIM_TRACE(0.00)[gmail.com:+]; RCVD_COUNT_ONE(0.00)[1]; FREEMAIL_ENVFROM(0.00)[gmail.com]; TO_DN_NONE(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; MISSING_XM_UA(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[freebsd-virtualization@freebsd.org]; MLMMJ_DEST(0.00)[freebsd-virtualization@freebsd.org]; MID_RHS_MATCH_FROMTLD(0.00)[]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::331:from] X-Rspamd-Queue-Id: 4f9S7z5Wgtz3VJV X-Spamd-Bar: ---- Hi, It's not possible to boot recent linux with grub in FreeBSD due to some unsupported ext4 flags in grub2-bhyve. I've filed a bug and there is a PR in grub2-bhyve github for some time without responses. There's anyone here that can move this forward ? https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=286702 (There's no patch attached but I can provide one) https://github.com/grehan-freebsd/grub2-bhyve/pull/18 From nobody Tue Feb 10 17:00:48 2026 X-Original-To: freebsd-virtualization@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4f9SWd0kK1z6Rdcl for ; Tue, 10 Feb 2026 17:01:17 +0000 (UTC) (envelope-from freebsd-virt.eva@winterschon.com) Received: from fhigh-b6-smtp.messagingengine.com (fhigh-b6-smtp.messagingengine.com [202.12.124.157]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4f9SWW45nyz3XXr for ; Tue, 10 Feb 2026 17:01:11 +0000 (UTC) (envelope-from freebsd-virt.eva@winterschon.com) Authentication-Results: mx1.freebsd.org; none Received: from phl-compute-02.internal (phl-compute-02.internal [10.202.2.42]) by mailfhigh.stl.internal (Postfix) with ESMTP id 5C2817A00F1; Tue, 10 Feb 2026 12:01:09 -0500 (EST) Received: from phl-imap-04 ([10.202.2.82]) by phl-compute-02.internal (MEProxy); Tue, 10 Feb 2026 12:01:09 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=winterschon.com; h=cc:content-transfer-encoding:content-type:content-type:date :date:from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:subject:subject:to:to; s=fm2; t=1770742869; x=1770829269; bh=SGOvZmSx4YUrpJ1A4yxp/j/eORFQbXlbk1etRc/NtZM=; b= RcxovJCCf7mGJUdDeq3l4MZg87YHD4ClQZ+GJ9f+6fwXSAAG4ZZMto/q0obS88C6 PgreYar2niIrEtQbk8VOUxVoYZ9FTFZyrFG73AXXQhNFlOsSqwc50HE3zpBxkurM 1AUNSRgP5JShKHJ6MNqYIzdp0L+Hx6j+zCsrKUNnOHMhenFD5v7XgZZEX1PYZumf tQGfoC9MkQFQiGqqRKorZc8n/tL2Homi+Yb6PN1W2k+3tFmcMQg2UFGHjs4TL6+r gHRg7yjJDixloR1MhHjom707MWhodKWhlieVIJMA1aSoiB/dGD2eN2NA2qDnCyVK aB4f3suHLobuTu8khMiJ4A== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:content-type :content-type:date:date:feedback-id:feedback-id:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:subject:subject:to:to:x-me-proxy:x-me-sender :x-me-sender:x-sasl-enc; s=fm3; t=1770742869; x=1770829269; bh=S GOvZmSx4YUrpJ1A4yxp/j/eORFQbXlbk1etRc/NtZM=; b=Q3zjaPu3MfRPp3+pM qvVpkdpAM/5Cnjx7zvSY/ABlf7aJ4wW+hqpCK3yzziH/vH5Mf+9sqV1LZqHGYFor kjW6LEXhot0s+//YyvT2ceFDL+ieVnD+BkA2ofmR5++zCpGL8vJGDeeg6z0s/8qE 9DWT4X1LHlbtUF2dmAibp9/wBV6pETuUauuI9RIozvpGwYJi1SIQ/3adz87dS1+C FCdW9GHSGrLX62r8+lQaU2cby80z8o9wlpy+qlvnNITfFXKpSgjDGjTTCwid2Stj EB5yVMg+b62NuMdsHZcFNuqQNnft9OaoqxSCmGCp/tKrMrTuC2ZZPjX3OTwxDm/K /6OsA== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeefgedrtddtgddvtddtvddvucetufdoteggodetrf dotffvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfurfetoffkrfgpnffqhgenuceu rghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujf gurhepofggfffhvffkjghfufgtgfesthhqredtredtjeenucfhrhhomhepgfhvrgcuhghi nhhtvghrshgthhpnnhcuoehfrhgvvggsshguqdhvihhrthdrvghvrgesfihinhhtvghrsh gthhhonhdrtghomheqnecuggftrfgrthhtvghrnhepteejfeeifeetudffhfffudfftefg gffgledthfejffevvdeiffekjedvieethedtnecuffhomhgrihhnpehfrhgvvggsshgurd horhhgpdhgihhthhhusgdrtghomhenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgr mhepmhgrihhlfhhrohhmpehfrhgvvggsshguqdhvihhrthdrvghvrgesfihinhhtvghrsh gthhhonhdrtghomhdpnhgspghrtghpthhtohepfedpmhhouggvpehsmhhtphhouhhtpdhr tghpthhtohepvghmihhlsegvthhsrghlrghprghtihhsrdgtohhmpdhrtghpthhtohepfh hrvggvsghsugdqvhhirhhtuhgrlhhiiigrthhiohhnsehfrhgvvggsshgurdhorhhgpdhr tghpthhtohepmhgrrhhivghtthhovddttdeksehgmhgrihhlrdgtohhm X-ME-Proxy: Feedback-ID: ic82e4800:Fastmail Received: by mailuser.phl.internal (Postfix, from userid 501) id 9E4F2B60070; Tue, 10 Feb 2026 12:01:08 -0500 (EST) X-Mailer: MessagingEngine.com Webmail Interface List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org MIME-Version: 1.0 X-ThreadId: AEM0M7Y6sLro Date: Tue, 10 Feb 2026 09:00:48 -0800 From: =?UTF-8?Q?Eva_Wintersch=C3=B6n?= To: "Mario Marietto" , "Emil Tsalapatis" , "FreeBSD virtualization" Message-Id: <18183baa-e198-4b73-88f0-1f1169f6fea0@app.fastmail.com> In-Reply-To: References: Subject: Re: RFC: Kernel virtiofs driver Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN_FAIL(0.00)[157.124.12.202.asn.rspamd.com:query timed out] X-Rspamd-Queue-Id: 4f9SWW45nyz3XXr X-Spamd-Bar: ---- Hi Mario, Feature similarly aside, one benefit of introducing the virtiofs driver = (and other libvirt / qemu specific drivers) is centered on "Enterprise P= arity". By this I'm referring to the substantial demands that corporatio= ns and their development teams place on comparative analysis between ven= dor and operating system solutions.=20 Requisite stages of product design, implementation, and delivery timelin= e planning generally occur well in advance of any code or documentation= being written. Solutions analysis involving software architecture plann= ing and scoping stages will sometimes involve "Should we use Linux or Fr= eeBSD?" =E2=80=93 if FreeBSD lacks the same tooling as Linux where "thes= e things must be the same" then many orgs will simply not use FreeBSD.=20 Personally, I find FreeBSD technically superior in nearly every single p= ossible way compared to Linux, and having watched market share decrease = over the past twenty five years makes me sad (and it means that I have t= o use Linux more often). I want that trend reversed, and for that to hap= pen we need feature parity for (cloud related in particular) tooling - a= nd that's where the virtfs driver fits in the conversation. It brings us= one step closer to teams using FreeBSD instead of Linux. Ok enough of my rambling. Hope that makes sense.=20 Thanks,=20 Eva=20 On Mon, Feb 9, 2026, at 22:57, Mario Marietto wrote: > `Hello Emil,` > > `Inside a FreeBSD guest OS (15.0-RELEASE) I do :` > > kldload virtio_p9fs=20 > > kldload p9fs_load > > > `mount -t p9fs sharename /mnt/host` > > `` > > `This works for me,I can share files between FreeBSD 15.0 guest and=20 > FreeBSD 14.3 host os. So,what's missing in this case and which feature= s=20 > you added ?` > > `Thanks.` > > > > On Tue, Feb 10, 2026 at 4:05=E2=80=AFAM Emil Tsalapatis wrote: >> Hi everyone, >>=20 >> I recently finished the virtiofs driver and it is now ready for r= eview. The device allows for sharing directories between a FreeBSD guest= and a host. >>=20 >> The driver really is two components: >>=20 >> 1) The virtio device that sends FUSE tickets to and from the host: D4= 6295 >> 2) The file system that gets mounted in the guest: D46296 . >>=20 >> To test it you need a couple additional fixes/workarounds for FUSE-re= lated issues. You can grab a working tree here or apply diffs D55047 and D55046 . D55046 i= s a workaround, but still prevents an assertion failure related to FUSE = caching until the underlying issue is properly fixed on HEAD.=20 >>=20 >> To use it, make sure you are creating virtiofs device on the host the= n from the FreeBSD guest run >>=20 >> mount -t virtiofs >>=20 >> where is the name tag you gave to the virtiofs device in the ho= st VMM. >>=20 >> Reviews and testing welcome! >>=20 >> Thanks, >> Emil >>=20 >>=20 > > > --=20 > Mario. From nobody Tue Feb 10 17:45:06 2026 X-Original-To: freebsd-virtualization@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4f9TVR07mHz6Rh80 for ; Tue, 10 Feb 2026 17:45:19 +0000 (UTC) (envelope-from pete@nomadlogic.org) Received: from mail.nomadlogic.org (mail.nomadlogic.org [46.21.153.22]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4f9TVQ43Z9z3fHP for ; Tue, 10 Feb 2026 17:45:18 +0000 (UTC) (envelope-from pete@nomadlogic.org) Authentication-Results: mx1.freebsd.org; none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nomadlogic.org; s=04242021; t=1770745502; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=gJea3r2XBPKpdsc5M5X635PN5RuQ3T/IRyQSObLp5fA=; b=ILhC8ZH2kTrWzY9Y1MCUVC8yomHxSzeNiTuspVZD5kq6wTcOGd7McKFhSGjk0tvNb+S3Ya gWGpp8YvJ/rtX9N64H8Yide6+wSOTJoJiyLZ41K53QVV2khIBixPzeE8/3b/sf7fh+vVcZ lbg8drAivooZtBIjPF49TEw+6jjd54E= Received: from [192.168.1.182] (47-143-52-179.fdr01.snmn.ca.ip.frontiernet.net [47.143.52.179]) by mail.nomadlogic.org (OpenSMTPD) with ESMTPSA id c12e37b2 (TLSv1.3:TLS_AES_256_GCM_SHA384:256:NO); Tue, 10 Feb 2026 17:45:01 +0000 (UTC) Message-ID: <9c3f1865-d47f-4fcf-a34b-866ee727a25b@nomadlogic.org> Date: Tue, 10 Feb 2026 09:45:06 -0800 List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: RFC: Kernel virtiofs driver To: Mario Marietto , Emil Tsalapatis , FreeBSD virtualization References: Content-Language: en-US From: Pete Wright In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:29802, ipnet:46.21.153.0/24, country:US] X-Rspamd-Queue-Id: 4f9TVQ43Z9z3fHP X-Spamd-Bar: ---- On 2/9/26 10:57 PM, Mario Marietto wrote: > |Hello Emil,| > > |Inside a FreeBSD guest OS (15.0-RELEASE) I do :| > > kldload virtio_p9fs > > kldload p9fs_load > > |mount -t p9fs sharename /mnt/host| > > || > > |This works for me,I can share files between FreeBSD 15.0 guest and > FreeBSD 14.3 host os. So,what's missing in this case and which features > you added ?| > i had a similar question since i've been happy with p9fs. the virtiofs faq states (https://virtio-fs.gitlab.io/): "Existing solutions to this problem, such as virtio-9p, are based on existing network protocols that are not optimized for virtualization use cases. As a result they do not perform as well as local file systems and do not provide the semantics that some applications rely on. Virtiofs takes advantage of the virtual machine’s co-location with the hypervisor to avoid overheads associated with network file systems." that seems super reasonable to me. i also think there is windows support for virtiofs which is probably another benefit. -pete -- Pete Wright pete@nomadlogic.org From nobody Wed Feb 11 02:38:34 2026 X-Original-To: freebsd-virtualization@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4f9jL040zVz6Rcw2 for ; Wed, 11 Feb 2026 02:38:48 +0000 (UTC) (envelope-from emil@etsalapatis.com) Received: from mail-yx1-xb132.google.com (mail-yx1-xb132.google.com [IPv6:2607:f8b0:4864:20::b132]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "WR4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4f9jL02479z42Nt for ; 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Tue, 10 Feb 2026 18:38:45 -0800 (PST) List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org MIME-Version: 1.0 References: <9c3f1865-d47f-4fcf-a34b-866ee727a25b@nomadlogic.org> In-Reply-To: <9c3f1865-d47f-4fcf-a34b-866ee727a25b@nomadlogic.org> From: Emil Tsalapatis Date: Tue, 10 Feb 2026 21:38:34 -0500 X-Gm-Features: AZwV_QhBmV-oP-VtJaDEILJ5Ee2AY_kZoHxo6T48m1FzVbJE1MDTw-0kLffbEYE Message-ID: Subject: Re: RFC: Kernel virtiofs driver To: Pete Wright Cc: Mario Marietto , FreeBSD virtualization Content-Type: multipart/alternative; boundary="0000000000006332ec064a8345df" X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US] X-Rspamd-Queue-Id: 4f9jL02479z42Nt X-Spamd-Bar: ---- --0000000000006332ec064a8345df Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Mario, Eva, Pete, Thank you for the feedback. To address some points: 1) virtiofs is significantly faster. AFAICT the p9fs FreeBSD driver has no guest-side caching caching - at least I've found no such option when mounting. To test the speed I measure from the host the time it takes to clone and build a simple repo: cd /mnt git clone https://github.com/redis/redis.git cd redis gmake -j32 cd /mnt rm -rf redis virtiofs takes 42 seconds, p9fs takes 7 minutes and 30 seconds. This is without turning on full writeback caching for virtiofs. I'm not familiar with p9fs' internals so if I've missed some caching-related option please let me know, but on the face of it virtiofs is worth it just for the speed increase. The current numbers do not even include the optimization in the FAQ ( https://virtio-fs.gitlab.io/) that Pete mentioned above. That is later work for after the initial driver gets merged. 2) Like Eva said, it's just a matter of feature parity. It's not always the case that both virtiofs and p9fs are available, and a user may prefer one over the other for whatever reason. The only counter argument I can think of is maintainance burden, but virtiofs is pretty maintainable: It's 1/5 the size of p9fs with a simple cloc (795 SLOC vs 4192 SLOC) because it reuses much of the existing FUSE logic. The existing testbench for FUSE largely also covers virtiofs. On Tue, Feb 10, 2026 at 12:45=E2=80=AFPM Pete Wright = wrote: > > > On 2/9/26 10:57 PM, Mario Marietto wrote: > > |Hello Emil,| > > > > |Inside a FreeBSD guest OS (15.0-RELEASE) I do :| > > > > kldload virtio_p9fs > > > > kldload p9fs_load > > > > |mount -t p9fs sharename /mnt/host| > > > > || > > > > |This works for me,I can share files between FreeBSD 15.0 guest and > > FreeBSD 14.3 host os. So,what's missing in this case and which features > > you added ?| > > > > > i had a similar question since i've been happy with p9fs. the virtiofs > faq states (https://virtio-fs.gitlab.io/): > > "Existing solutions to this problem, such as virtio-9p, are based on > existing network protocols that are not optimized for virtualization use > cases. As a result they do not perform as well as local file systems and > do not provide the semantics that some applications rely on. > > Virtiofs takes advantage of the virtual machine=E2=80=99s co-location wit= h the > hypervisor to avoid overheads associated with network file systems." > > > that seems super reasonable to me. i also think there is windows > support for virtiofs which is probably another benefit. > > -pete > > -- > Pete Wright > pete@nomadlogic.org > > --0000000000006332ec064a8345df Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Mario, Eva, Pete,

=C2=A0= =C2=A0=C2=A0 Thank you for the feedback. To address some points:
=
1) virtiofs is significantly faster. AFAICT the p9fs FreeBSD= driver has no guest-side caching caching - at least I've found no such= option when mounting. To test the speed I measure from the host the time i= t takes to clone and build a simple repo:

cd /mnt<= br>git clone https://github.= com/redis/redis.git
cd redis
gmake -j32
cd /mnt
rm -rf redis

virtiofs takes 42 seconds, p9f= s takes 7 minutes and 30 seconds. This is without turning on full writeback= caching for virtiofs. I'm not familiar with p9fs' internals so if = I've missed some caching-related option please let me know, but on the = face of it virtiofs is worth it just for the speed increase.

=
The current numbers do not even include the optimization in the = FAQ (https://virtio-fs.gitlab.io/) that Pete mentioned above. That i= s later work for after the initial driver gets merged.

2) Like Eva said, it's just a matter of feature parity. It'= ;s not always the case that both virtiofs and p9fs are available, and a use= r may prefer one over the other for whatever reason. The only counter argum= ent I can think of is maintainance burden, but virtiofs is pretty maintaina= ble: It's 1/5 the size of p9fs with a simple cloc (795 SLOC vs 4192 SLO= C) because it reuses much of the existing FUSE logic. The existing testbenc= h for FUSE largely also covers virtiofs.


On Tue, Feb 10, 2026 at 1= 2:45=E2=80=AFPM Pete Wright <pete@nomadlogic.org> wrote:


On 2/9/26 10:57 PM, Mario Marietto wrote:
> |Hello Emil,|
>
> |Inside a FreeBSD guest OS (15.0-RELEASE) I do :|
>
> kldload virtio_p9fs
>
> kldload p9fs_load
>
> |mount -t p9fs sharename /mnt/host|
>
> ||
>
> |This works for me,I can share files between FreeBSD 15.0 guest and > FreeBSD 14.3 host os. So,what's missing in this case and which fea= tures
> you added ?|
>


i had a similar question since i've been happy with p9fs.=C2=A0 the vir= tiofs
faq states (https://virtio-fs.gitlab.io/):

"Existing solutions to this problem, such as virtio-9p, are based on <= br> existing network protocols that are not optimized for virtualization use cases. As a result they do not perform as well as local file systems and do not provide the semantics that some applications rely on.

Virtiofs takes advantage of the virtual machine=E2=80=99s co-location with = the
hypervisor to avoid overheads associated with network file systems."

that seems super reasonable to me.=C2=A0 i also think there is windows
support for virtiofs which is probably another benefit.

-pete

--
Pete Wright
pete@nomadlogic.or= g

--0000000000006332ec064a8345df-- From nobody Wed Feb 11 04:27:48 2026 X-Original-To: freebsd-virtualization@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with UTF8SMTP id 4f9llz2Jczz6RpP8 for ; Wed, 11 Feb 2026 04:27:59 +0000 (UTC) (envelope-from paul@redbarn.org) Received: from util.redbarn.org (util.redbarn.org [24.104.150.222]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "*.redbarn.org", Issuer "Sectigo Public Server Authentication CA DV R36" (not verified)) by mx1.freebsd.org (Postfix) with UTF8SMTPS id 4f9llz08R4z3Kxj for ; Wed, 11 Feb 2026 04:27:58 +0000 (UTC) (envelope-from paul@redbarn.org) Authentication-Results: mx1.freebsd.org; none Received: from family.redbarn.org (family.redbarn.org [IPv6:2001:559:8000:cd::5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "*.redbarn.org", Issuer "Sectigo Public Server Authentication CA DV R36" (not verified)) by util.redbarn.org (Postfix) with UTF8SMTPS id 4BDFB160B36; Wed, 11 Feb 2026 04:27:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=redbarn.org; s=util; t=1770784071; bh=yjGOEySJu91sarwX64NAcbuB5DPRkjuFsEPtdeI/ymc=; h=Date:From:To:Cc:In-Reply-To:References:Subject; b=UQxkPXaXHt/wCeP5F1z1Bfef4qOLqylUicJMXzTiD2t30JNfXRdFgiBOk1p5vdrMo IKXXlHyOCObW3iJyTE5TyJT/hRazbzmRqhMilCDAerYCH7G4DxlGyZ4sfg7b6oMAyY MLEjq/xHsO9ilyhdWjIWl5GHjkRE8tiaxBBNHmAA= Received: from dummy.faircode.eu (unknown [12.23.24.162]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by family.redbarn.org (Postfix) with UTF8SMTPSA id B7EF019; Wed, 11 Feb 2026 04:27:51 +0000 (UTC) Date: Tue, 10 Feb 2026 22:27:48 -0600 From: Paul Vixie To: Emil Tsalapatis Cc: Pete Wright , Mario Marietto , FreeBSD virtualization Message-ID: In-Reply-To: References: <9c3f1865-d47f-4fcf-a34b-866ee727a25b@nomadlogic.org> Subject: Re: RFC: Kernel virtiofs driver List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_15_177762501.1770784068738" X-Correlation-ID: X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:33651, ipnet:24.104.150.0/24, country:US] X-Rspamd-Queue-Id: 4f9llz08R4z3Kxj X-Spamd-Bar: ---- ------=_Part_15_177762501.1770784068738 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Do both p9fs and virtiofs both support mmap() such that two or more guests, and the host, can all map a file on the host for read/write access, and each see writes made by the others? This is my pain point with nfs and smb. Is either one as lightweight as zvol and ufs, such that I could consider using it for the os? I appreciate all the effort both teams have put in. Paul Vixie ------=_Part_15_177762501.1770784068738 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 7bit Do both p9fs and virtiofs both support mmap() such that two or more guests, and the host, can all map a file on the host for read/write access, and each see writes made by the others? This is my pain point with nfs and smb.

Is either one as lightweight as zvol and ufs, such that I could consider using it for the os?

I appreciate all the effort both teams have put in.
Paul Vixie
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[107.215.223.229]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2ba9dbe127dsm625878eec.11.2026.02.10.22.20.23 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Tue, 10 Feb 2026 22:20:23 -0800 (PST) Content-Type: text/plain; charset=utf-8 List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3864.300.41.1.7\)) Subject: Re: RFC: Kernel virtiofs driver From: Bakul Shah In-Reply-To: Date: Tue, 10 Feb 2026 22:20:12 -0800 Cc: Emil Tsalapatis , Pete Wright , Mario Marietto , FreeBSD virtualization Content-Transfer-Encoding: quoted-printable Message-Id: <11AD883A-2824-4F1D-848E-CBD508E30040@iitbombay.org> References: <9c3f1865-d47f-4fcf-a34b-866ee727a25b@nomadlogic.org> To: Paul Vixie X-Mailer: Apple Mail (2.3864.300.41.1.7) X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US] X-Rspamd-Queue-Id: 4f9pFp6wPsz3mLH X-Spamd-Bar: ---- On Feb 10, 2026, at 8:27=E2=80=AFPM, Paul Vixie = wrote: >=20 > Do both p9fs and virtiofs both support mmap() such that two or more = guests, and the host, can all map a file on the host for read/write = access, and each see writes made by the others? This is my pain point = with nfs and smb. At least read-access works fine in p9fs. Haven't tried anything else. I suspect writes would be not seen across VMs (at least for p9fs). For that to work you'd have to map the same host page in both VMs. > Is either one as lightweight as zvol and ufs, such that I could = consider using it for the os?=20 >=20 > I appreciate all the effort both teams have put in.=20 > Paul Vixie From nobody Thu Feb 12 04:15:11 2026 X-Original-To: freebsd-virtualization@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4fBMQr0JWpz6SCtm for ; Thu, 12 Feb 2026 04:15:16 +0000 (UTC) (envelope-from emil@etsalapatis.com) Received: from mail-qt1-x833.google.com (mail-qt1-x833.google.com [IPv6:2607:f8b0:4864:20::833]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "WR4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4fBMQq4ByDz3KJq for ; Thu, 12 Feb 2026 04:15:15 +0000 (UTC) (envelope-from emil@etsalapatis.com) Authentication-Results: mx1.freebsd.org; none Received: by mail-qt1-x833.google.com with SMTP id d75a77b69052e-505e2e4c35fso24585991cf.3 for ; Wed, 11 Feb 2026 20:15:15 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=etsalapatis-com.20230601.gappssmtp.com; s=20230601; t=1770869713; x=1771474513; darn=freebsd.org; h=in-reply-to:references:cc:to:from:subject:message-id:date :content-transfer-encoding:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=ht6IvNih9C64M1EbNa1CejJ1Kc8nl3IJ1YKlQUZjrdw=; b=C/u3CXLyqjrxk+fBoxbG7/tZiB9jzmf8WKxg7p3klkC8RLs074mLQ3a5Xey5BSpKyh QQP+3RzWluj8q30s1THdgl2t0qJm45BVhulKqh+KzDSYpSmlsn0RFG45ZRIfOkmBWYqI 3pqvuaqqTnUfU5YJJClw3pNKbgVAhQ7bkZSWYOfKNwaR4iwRL9/55eHvm4TE3uI2znCg Q1D2ecastajoLuIyXNAsFMyNeqLYYYU2S4X10qPkNgeMdv0bwdEtg3U8u4ZQsPSG/Z/W Ddrz1SbQ8y8i/YNIgL2iaH97YU0ZZGggUQosPTxnQC7fBS8xjUzLCNuKyrwzDCzercIN WJxQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1770869713; x=1771474513; h=in-reply-to:references:cc:to:from:subject:message-id:date :content-transfer-encoding:mime-version:x-gm-gg:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=ht6IvNih9C64M1EbNa1CejJ1Kc8nl3IJ1YKlQUZjrdw=; b=lV+xvR38mvd53KbaWOOgQmImCTjk6hksbps7vEVrVN6DNQ+AJDaw1js9nOdlWNDzmT KwUVHAs2One7WPW3b/TobQLDLyLXRMX4XuEeujIGEIJ/BuqW2YW5/JZroxGryQxrdJOV Ohijabk9Shy5bU3tSC+9MwvhI5+brYlEdtQAOTUP7aVVFY9lPLw5OAIoaExld5YFnB3U IJER7gA0f7ZtTaPMEJiHe8evaPGIIxLSTn3BrQ9BxH5S+DtHF9GjAEUc19+NG7JDMjaw 8q2twnJL9rRwfqjPWaUVFEeFqbNNxmonvBUNt5GKApFzs6k82m3Db+HlPnd6Fiwl1omF 0TBw== X-Forwarded-Encrypted: i=1; AJvYcCXQcBw9MkS5kDO93bO0HD5mCMmpPdzJDSmO4yFOuIEubjgoABJYbUFlix8HZeF463GtQFaosDjV/1kUUx/U0KDNSLNIKGmh@freebsd.org X-Gm-Message-State: AOJu0YzxyhTLgDAgqRmWKzFXAegdjulCcklYbrOYeI25EtxvlKzQ0t5r MBLhaZ5GYr3c7pucb8dJFORJ0Oxt3PiavsaqNjzblgDOI/YIsZGjiR1Il9rep7Lt7P72nG+fGlm oMaNANek= X-Gm-Gg: AZuq6aI6A3PPWCBtze2dVqr5dVDFeJYYrfqxhsxjzm6007WM+N6Icy2nJsyi+gpVPJ6 krmgOt1r58mCYeHUH1n7A3NxNr+bh4TYkq2UHsyiBRjYq4520hlEUFn9mNdg1PyvO4msezteXDe t33C2rE+SZbRTx6n/s/uHS6UnhFbNo3Dfp19imY/7UJ/dQLeCjJtODk6QbqZ1QTZRakUXxLkl1N z+pn0+7GwjYp4nT3QwhFj4Q9ew3xBdzU1MPb6PfWySzZX0WMI4hN6UAkUaIN6KBS0EVQs9/A/Rs OBXWd27xdMe2Ptv74r0ekIFeTZaoPvvttRLvVe5VVSE7FSz6tpOrhY2XLBCggoHPnGP7ad5Wojo 1WL6cfAxHGqBrE4VmN2DkfkXPwg7TzvsuIZ+7iorhubNZ2YC02cd6jddYs8C9t2Fo2y59fHgzsq 7wkwj0zr15S2vhyZUicdDtNOk= X-Received: by 2002:ac8:5893:0:b0:501:863a:a881 with SMTP id d75a77b69052e-50694ef3b04mr9881841cf.75.1770869713163; Wed, 11 Feb 2026 20:15:13 -0800 (PST) Received: from localhost ([140.174.219.137]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-506847ef59csm27628751cf.10.2026.02.11.20.15.12 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 11 Feb 2026 20:15:12 -0800 (PST) List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Wed, 11 Feb 2026 23:15:11 -0500 Message-Id: Subject: Re: RFC: Kernel virtiofs driver From: "Emil Tsalapatis" To: "Paul Vixie" Cc: "Pete Wright" , "Mario Marietto" , "FreeBSD virtualization" X-Mailer: aerc 0.20.1 References: <9c3f1865-d47f-4fcf-a34b-866ee727a25b@nomadlogic.org> In-Reply-To: X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US] X-Rspamd-Queue-Id: 4fBMQq4ByDz3KJq X-Spamd-Bar: ---- On Tue Feb 10, 2026 at 11:27 PM EST, Paul Vixie wrote: > Do both p9fs and virtiofs both support mmap() such that two or more guest= s, and the host, can all map a file on the host for read/write access, and = each see writes made by the others? This is my pain point with nfs and smb. > The virtiofs protocol supports this, it was one of its initial selling points. However, I'm planning on implementing the extention after the=20 base driver is merged. So not now but soon, there will be the ability=20 to directly map data directly into the guest and work on it. A nice description of how the protocol actually does the mapping is in the=20 commit for the Linux virtiofs kernel driver: https://lwn.net/Articles/813807/ > Is either one as lightweight as zvol and ufs, such that I could consider = using it for the os? > People have used it as a root mount but I don't have concrete numbers to be honest. I will get some this weekend and get back to you. > I appreciate all the effort both teams have put in. Thank you!=20 > Paul Vixie From nobody Thu Feb 12 14:01:43 2026 X-Original-To: freebsd-virtualization@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4fBcRr1Hftz6Rftq for ; Thu, 12 Feb 2026 14:02:00 +0000 (UTC) (envelope-from osidorkin@gmail.com) Received: from mail-qv1-xf30.google.com (mail-qv1-xf30.google.com [IPv6:2607:f8b0:4864:20::f30]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "WR4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4fBcRp05lyz3mpr for ; Thu, 12 Feb 2026 14:01:58 +0000 (UTC) (envelope-from osidorkin@gmail.com) Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20230601 header.b=M4L6z4oR; dmarc=pass (policy=none) header.from=gmail.com; arc=pass ("google.com:s=arc-20240605:i=1"); 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Thu, 12 Feb 2026 06:01:54 -0800 (PST) List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org MIME-Version: 1.0 References: In-Reply-To: From: Oleg Sidorkin Date: Thu, 12 Feb 2026 17:01:43 +0300 X-Gm-Features: AZwV_QiOc2Z0CES34UDRJZBuYajRKyUJyedl8MrTyGMPh6uJ534WPS_2cynBucc Message-ID: Subject: Re: RFC: Kernel virtiofs driver To: Mario Marietto Cc: Emil Tsalapatis , FreeBSD virtualization Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Spamd-Result: default: False [-5.00 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; ARC_ALLOW(-1.00)[google.com:s=arc-20240605:i=1]; NEURAL_HAM_SHORT(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20230601]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36:c]; MIME_GOOD(-0.10)[text/plain]; 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My favorite test to run in bhyve guest: root@:/usr/src # uname -a FreeBSD 16.0-CURRENT FreeBSD 16.0-CURRENT #1 main-n283712-16c902f05853: Sat Feb 7 02:10:47 MSK 2026 olsi@:/usr/obj/usr/src/amd64.amd64/sys/QUADKERNEL amd64 root@:/usr/src # mount /dev/vtbd0p2 on / (ufs, local, soft-updates, journaled soft-updates) devfs on /dev (devfs) obj on /usr/obj (p9fs, local) 192.168.2.1:/vms/freebsd-current/usr/home on /usr/home (nfs) 192.168.2.1:/vms/freebsd-current/usr/src on /usr/src (nfs) 192.168.2.1:/vms/freebsd-current/usr/lib/debug on /usr/lib/debug (nfs) 192.168.2.1:/usr/ports/distfiles on /usr/ports/distfiles (nfs) root@:/usr/src # make -j4 buildworld buildkernel Panics guest system in a few minutes (everything is ok when /obj is mounted over nfs): db> bt Tracing pid 2248 tid 100165 td 0xfffff80100eb8780 kdb_enter() at kdb_enter+0x33/frame 0xfffffe006833e560 panic() at panic+0x43/frame 0xfffffe006833e5c0 freevnode() at freevnode+0x2d5/frame 0xfffffe006833e620 vput_final() at vput_final+0x96/frame 0xfffffe006833e670 vfs_hash_insert() at vfs_hash_insert+0x226/frame 0xfffffe006833e6c0 p9fs_vget_common() at p9fs_vget_common+0x39b/frame 0xfffffe006833e770 p9fs_lookup() at p9fs_lookup+0x4ad/frame 0xfffffe006833e8c0 VOP_LOOKUP_APV() at VOP_LOOKUP_APV+0x57/frame 0xfffffe006833e8f0 vfs_lookup() at vfs_lookup+0x5aa/frame 0xfffffe006833e980 namei() at namei+0x35d/frame 0xfffffe006833e9e0 kern_execve() at kern_execve+0x2d1/frame 0xfffffe006833ed80 sys_execve() at sys_execve+0x54/frame 0xfffffe006833ee00 amd64_syscall() at amd64_syscall+0x169/frame 0xfffffe006833ef30 fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe006833ef30 --- syscall (59, FreeBSD ELF64, execve), rip =3D 0x2cc73682f46a, rsp =3D 0x2cc731eb2028, rbp =3D 0x2cc731eb2170 --- db> I'll be really happy to test virtiofs and I hope it will do better. Thanks =D0=B2=D1=82, 10 =D1=84=D0=B5=D0=B2=D1=80. 2026=E2=80=AF=D0=B3. =D0=B2 09:5= 7, Mario Marietto : > > Hello Emil, > > Inside a FreeBSD guest OS (15.0-RELEASE) I do : > > kldload virtio_p9fs > > kldload p9fs_load > > mount -t p9fs sharename /mnt/host > > This works for me,I can share files between FreeBSD 15.0 guest and FreeBS= D 14.3 host os. So,what's missing in this case and which features you added= ? > > Thanks. > > > > On Tue, Feb 10, 2026 at 4:05=E2=80=AFAM Emil Tsalapatis wrote: >> >> Hi everyone, >> >> I recently finished the virtiofs driver and it is now ready for revi= ew. The device allows for sharing directories between a FreeBSD guest and a= host. >> >> The driver really is two components: >> >> 1) The virtio device that sends FUSE tickets to and from the host: D4629= 5 >> 2) The file system that gets mounted in the guest: D46296. >> >> To test it you need a couple additional fixes/workarounds for FUSE-relat= ed issues. You can grab a working tree here or apply diffs D55047 and D5504= 6. D55046 is a workaround, but still prevents an assertion failure related = to FUSE caching until the underlying issue is properly fixed on HEAD. >> >> To use it, make sure you are creating virtiofs device on the host then f= rom the FreeBSD guest run >> >> mount -t virtiofs >> >> where is the name tag you gave to the virtiofs device in the host = VMM. >> >> Reviews and testing welcome! >> >> Thanks, >> Emil >> >> > > > -- > Mario. --=20 Oleg Sidorkin From nobody Thu Feb 12 17:14:40 2026 X-Original-To: freebsd-virtualization@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4fBhkw0Y02z6S0bS for ; Thu, 12 Feb 2026 17:15:20 +0000 (UTC) (envelope-from marietto2008@gmail.com) Received: from mail-pj1-x1030.google.com (mail-pj1-x1030.google.com [IPv6:2607:f8b0:4864:20::1030]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "WR4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4fBhkv5P33z3K7M for ; 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Thu, 12 Feb 2026 09:15:17 -0800 (PST) List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org MIME-Version: 1.0 References: In-Reply-To: From: Mario Marietto Date: Thu, 12 Feb 2026 18:14:40 +0100 X-Gm-Features: AZwV_QjT9BsykeYhwV7Uni3QTHPl3hQoh1n7Ut7qwNoHf_efrlKKnJj_9XiZWxM Message-ID: Subject: Re: RFC: Kernel virtiofs driver To: Oleg Sidorkin Cc: Emil Tsalapatis , FreeBSD virtualization Content-Type: multipart/alternative; boundary="000000000000ee3aec064aa3a178" X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US] X-Rspamd-Queue-Id: 4fBhkv5P33z3K7M X-Spamd-Bar: ---- --000000000000ee3aec064aa3a178 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable --> Panics guest system in a few minutes (everything is ok when /obj is... FreeBSD 16 is working in progress ; virtiofs is work in progress...what do you expect ? On Thu, Feb 12, 2026 at 3:01=E2=80=AFPM Oleg Sidorkin = wrote: > Hello. > > My favorite test to run in bhyve guest: > > root@:/usr/src # uname -a > FreeBSD 16.0-CURRENT FreeBSD 16.0-CURRENT #1 > main-n283712-16c902f05853: Sat Feb 7 02:10:47 MSK 2026 > olsi@:/usr/obj/usr/src/amd64.amd64/sys/QUADKERNEL amd64 > root@:/usr/src # mount > /dev/vtbd0p2 on / (ufs, local, soft-updates, journaled soft-updates) > devfs on /dev (devfs) > obj on /usr/obj (p9fs, local) > 192.168.2.1:/vms/freebsd-current/usr/home on /usr/home (nfs) > 192.168.2.1:/vms/freebsd-current/usr/src on /usr/src (nfs) > 192.168.2.1:/vms/freebsd-current/usr/lib/debug on /usr/lib/debug (nfs) > 192.168.2.1:/usr/ports/distfiles on /usr/ports/distfiles (nfs) > root@:/usr/src # make -j4 buildworld buildkernel > > Panics guest system in a few minutes (everything is ok when /obj is > mounted over nfs): > > db> bt > Tracing pid 2248 tid 100165 td 0xfffff80100eb8780 > kdb_enter() at kdb_enter+0x33/frame 0xfffffe006833e560 > panic() at panic+0x43/frame 0xfffffe006833e5c0 > freevnode() at freevnode+0x2d5/frame 0xfffffe006833e620 > vput_final() at vput_final+0x96/frame 0xfffffe006833e670 > vfs_hash_insert() at vfs_hash_insert+0x226/frame 0xfffffe006833e6c0 > p9fs_vget_common() at p9fs_vget_common+0x39b/frame 0xfffffe006833e770 > p9fs_lookup() at p9fs_lookup+0x4ad/frame 0xfffffe006833e8c0 > VOP_LOOKUP_APV() at VOP_LOOKUP_APV+0x57/frame 0xfffffe006833e8f0 > vfs_lookup() at vfs_lookup+0x5aa/frame 0xfffffe006833e980 > namei() at namei+0x35d/frame 0xfffffe006833e9e0 > kern_execve() at kern_execve+0x2d1/frame 0xfffffe006833ed80 > sys_execve() at sys_execve+0x54/frame 0xfffffe006833ee00 > amd64_syscall() at amd64_syscall+0x169/frame 0xfffffe006833ef30 > fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe006833ef3= 0 > --- syscall (59, FreeBSD ELF64, execve), rip =3D 0x2cc73682f46a, rsp =3D > 0x2cc731eb2028, rbp =3D 0x2cc731eb2170 --- > db> > > I'll be really happy to test virtiofs and I hope it will do better. > > Thanks > > =D0=B2=D1=82, 10 =D1=84=D0=B5=D0=B2=D1=80. 2026=E2=80=AF=D0=B3. =D0=B2 09= :57, Mario Marietto : > > > > Hello Emil, > > > > Inside a FreeBSD guest OS (15.0-RELEASE) I do : > > > > kldload virtio_p9fs > > > > kldload p9fs_load > > > > mount -t p9fs sharename /mnt/host > > > > This works for me,I can share files between FreeBSD 15.0 guest and > FreeBSD 14.3 host os. So,what's missing in this case and which features y= ou > added ? > > > > Thanks. > > > > > > > > On Tue, Feb 10, 2026 at 4:05=E2=80=AFAM Emil Tsalapatis > wrote: > >> > >> Hi everyone, > >> > >> I recently finished the virtiofs driver and it is now ready for > review. The device allows for sharing directories between a FreeBSD guest > and a host. > >> > >> The driver really is two components: > >> > >> 1) The virtio device that sends FUSE tickets to and from the host: > D46295 > >> 2) The file system that gets mounted in the guest: D46296. > >> > >> To test it you need a couple additional fixes/workarounds for > FUSE-related issues. You can grab a working tree here or apply diffs D550= 47 > and D55046. D55046 is a workaround, but still prevents an assertion failu= re > related to FUSE caching until the underlying issue is properly fixed on > HEAD. > >> > >> To use it, make sure you are creating virtiofs device on the host then > from the FreeBSD guest run > >> > >> mount -t virtiofs > >> > >> where is the name tag you gave to the virtiofs device in the hos= t > VMM. > >> > >> Reviews and testing welcome! > >> > >> Thanks, > >> Emil > >> > >> > > > > > > -- > > Mario. > > > > -- > Oleg Sidorkin > --=20 Mario. --000000000000ee3aec064aa3a178 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
--> Panics guest system in a few minutes (everythi= ng is ok when /obj is...

FreeBSD 16 is working in = progress ; virtiofs=C2=A0is work in progress...what do you expect ?=C2=A0

On Thu, Feb 12, 2026 at 3:01=E2=80=AFPM Oleg Sido= rkin <osidorkin@gmail.com>= wrote:
Hello.
My favorite test to run in bhyve guest:

root@:/usr/src # uname -a
FreeBSD=C2=A0 16.0-CURRENT FreeBSD 16.0-CURRENT #1
main-n283712-16c902f05853: Sat Feb=C2=A0 7 02:10:47 MSK 2026
olsi@:/usr/obj/usr/src/amd64.amd64/sys/QUADKERNEL amd64
root@:/usr/src # mount
/dev/vtbd0p2 on / (ufs, local, soft-updates, journaled soft-updates)
devfs on /dev (devfs)
obj on /usr/obj (p9fs, local)
192.168.2.1:/vms/freebsd-current/usr/home on /usr/home (nfs)
192.168.2.1:/vms/freebsd-current/usr/src on /usr/src (nfs)
192.168.2.1:/vms/freebsd-current/usr/lib/debug on /usr/lib/debug (nfs)
192.168.2.1:/usr/ports/distfiles on /usr/ports/distfiles (nfs)
root@:/usr/src # make -j4 buildworld buildkernel

Panics guest system in a few minutes (everything is ok when /obj is
mounted over nfs):

db> bt
Tracing pid 2248 tid 100165 td 0xfffff80100eb8780
kdb_enter() at kdb_enter+0x33/frame 0xfffffe006833e560
panic() at panic+0x43/frame 0xfffffe006833e5c0
freevnode() at freevnode+0x2d5/frame 0xfffffe006833e620
vput_final() at vput_final+0x96/frame 0xfffffe006833e670
vfs_hash_insert() at vfs_hash_insert+0x226/frame 0xfffffe006833e6c0
p9fs_vget_common() at p9fs_vget_common+0x39b/frame 0xfffffe006833e770
p9fs_lookup() at p9fs_lookup+0x4ad/frame 0xfffffe006833e8c0
VOP_LOOKUP_APV() at VOP_LOOKUP_APV+0x57/frame 0xfffffe006833e8f0
vfs_lookup() at vfs_lookup+0x5aa/frame 0xfffffe006833e980
namei() at namei+0x35d/frame 0xfffffe006833e9e0
kern_execve() at kern_execve+0x2d1/frame 0xfffffe006833ed80
sys_execve() at sys_execve+0x54/frame 0xfffffe006833ee00
amd64_syscall() at amd64_syscall+0x169/frame 0xfffffe006833ef30
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe006833ef30<= br> --- syscall (59, FreeBSD ELF64, execve), rip =3D 0x2cc73682f46a, rsp =3D 0x2cc731eb2028, rbp =3D 0x2cc731eb2170 ---
db>

I'll be really happy to test virtiofs and I hope it will do better.

Thanks

=D0=B2=D1=82, 10 =D1=84=D0=B5=D0=B2=D1=80. 2026=E2=80=AF=D0=B3. =D0=B2 09:5= 7, Mario Marietto <marietto2008@gmail.com>:
>
> Hello Emil,
>
> Inside a FreeBSD guest OS (15.0-RELEASE) I do :
>
> kldload virtio_p9fs
>
> kldload p9fs_load
>
> mount -t p9fs sharename /mnt/host
>
> This works for me,I can share files between FreeBSD 15.0 guest and Fre= eBSD 14.3 host os. So,what's missing in this case and which features yo= u added ?
>
> Thanks.
>
>
>
> On Tue, Feb 10, 2026 at 4:05=E2=80=AFAM Emil Tsalapatis <emil@etsalapatis.com>= ; wrote:
>>
>> Hi everyone,
>>
>>=C2=A0 =C2=A0 =C2=A0I recently finished the virtiofs driver and it = is now ready for review. The device allows for sharing directories between = a FreeBSD guest and a host.
>>
>> The driver really is two components:
>>
>> 1) The virtio device that sends FUSE tickets to and from the host:= D46295
>> 2) The file system that gets mounted in the guest: D46296.
>>
>> To test it you need a couple additional fixes/workarounds for FUSE= -related issues. You can grab a working tree here or apply diffs D55047 and= D55046. D55046 is a workaround, but still prevents an assertion failure re= lated to FUSE caching until the underlying issue is properly fixed on HEAD.=
>>
>> To use it, make sure you are creating virtiofs device on the host = then from the FreeBSD guest run
>>
>> mount -t virtiofs <tag> <mountpoint>
>>
>> where <tag> is the name tag you gave to the virtiofs device = in the host VMM.
>>
>> Reviews and testing welcome!
>>
>> Thanks,
>> Emil
>>
>>
>
>
> --
> Mario.



--
Oleg Sidorkin


--
Ma= rio.
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Thu, 12 Feb 2026 19:15:17 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 293147] Bhyve broken on FreeBSD with SVM error Date: Thu, 12 Feb 2026 19:15:17 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bhyve X-Bugzilla-Version: 15.0-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: freebsd@fizz.buzz X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: virtualization@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D293147 Bug ID: 293147 Summary: Bhyve broken on FreeBSD with SVM error Product: Base System Version: 15.0-RELEASE Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: bhyve Assignee: virtualization@FreeBSD.org Reporter: freebsd@fizz.buzz I recently upgraded from FreeBSD 14.3 to FreeBSD 15.0-p3 via pkgbase. This broke launching any of my bhyve virtual machines. If I go back to my FreeBSD 14.3 boot environment then they start working again. I've tried bot= h a FreeBSD 15 upgraded from 14.3 and a clean install of FreeBSD 15, both exhib= it this error. ``` # bhyve -D -c 8 -m 64G -S -H -o rtc.use_localtime=3Dfalse -s 0,hostbridge -s 4,nvme,/dev/zvol/zdata/vm/hydra/disk0 -s 11,xhci,tablet -s 12,lpc -l com1,s= tdio -l bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI.fd,/vm/hydra/BHYVE_UEFI_V= ARS.fd -s 2:0,virtio-net,netgraph,path=3Dbridge_jail_nat:,peerhook=3Dlink5,mac=3D06:8= 4:36:68:03:77 -s 5,ahci-cd,/vm/hydra/hydra.iso -s 10,fbuf,tcp=3D127.0.0.1:5901,w=3D1920,h= =3D1080 hydra fbuf frame buffer base: 0x3cdc64200000 [sz 33554432] vm exit[0] reason SVM rip 0x000000000000fff0 inst_length 0 exitcode 0x400 exitinfo1 0x10000001d exitinfo2 0xfffff000 ``` dmesg isn't much help: ``` pid 53041 (bhyve), jid 0, uid 0: exited on signal 6 (no core dump - other error) ``` Nor is /var/log/messages: ``` Feb 12 19:08:01 mrmanager kernel: pid 53041 (bhyve), jid 0, uid 0: exited on signal 6 (no core dump - other error) ``` Machine is: Motherboard: AS -1115CS-TNR CPU: AMD EPYC 9124 --=20 You are receiving this mail because: You are the assignee for the bug.= From nobody Thu Feb 12 19:16:24 2026 X-Original-To: virtualization@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4fBlQc3PbYz6SBV6 for ; 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Thu, 12 Feb 2026 19:16:24 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 61CJGO75018198 for ; Thu, 12 Feb 2026 19:16:24 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 61CJGOHY018197 for virtualization@FreeBSD.org; Thu, 12 Feb 2026 19:16:24 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 293147] Bhyve broken on FreeBSD 15 with SVM error Date: Thu, 12 Feb 2026 19:16:24 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bhyve X-Bugzilla-Version: 15.0-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: freebsd@fizz.buzz X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: virtualization@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: short_desc Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D293147 Tom changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|Bhyve broken on FreeBSD |Bhyve broken on FreeBSD 15 |with SVM error |with SVM error --=20 You are receiving this mail because: You are the assignee for the bug.= From nobody Thu Feb 12 22:30:40 2026 X-Original-To: virtualization@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4fBqkm6MJzz6RmlX for ; Thu, 12 Feb 2026 22:30:40 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R13" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4fBqkm5S73z40Gf for ; 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Thu, 12 Feb 2026 22:30:40 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 61CMUeVb026035 for ; Thu, 12 Feb 2026 22:30:40 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 61CMUesv026020 for virtualization@FreeBSD.org; Thu, 12 Feb 2026 22:30:40 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 293147] Bhyve broken on FreeBSD 15 with SVM error Date: Thu, 12 Feb 2026 22:30:40 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bhyve X-Bugzilla-Version: 15.0-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: bakul@iitbombay.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: virtualization@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D293147 Bakul Shah changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |bakul@iitbombay.org --- Comment #1 from Bakul Shah --- Does the fix in https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D291768#= c12 work? --=20 You are receiving this mail because: You are the assignee for the bug.= From nobody Fri Feb 13 00:44:21 2026 X-Original-To: virtualization@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4fBtj21C9Cz6S1rY for ; 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Fri, 13 Feb 2026 00:44:22 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 61D0iLxQ039760 for ; Fri, 13 Feb 2026 00:44:21 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 61D0iLHY039759 for virtualization@FreeBSD.org; Fri, 13 Feb 2026 00:44:21 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 293147] Bhyve broken on FreeBSD 15 with SVM error Date: Fri, 13 Feb 2026 00:44:21 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bhyve X-Bugzilla-Version: 15.0-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: freebsd@fizz.buzz X-Bugzilla-Status: Closed X-Bugzilla-Resolution: DUPLICATE X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: virtualization@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_status resolution Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D293147 Tom changed: What |Removed |Added ---------------------------------------------------------------------------- Status|New |Closed Resolution|--- |DUPLICATE --- Comment #2 from Tom --- Yup, that work around fixed it for me. Thanks! Marking this as a duplicate. *** This bug has been marked as a duplicate of bug 291768 *** --=20 You are receiving this mail because: You are the assignee for the bug.= From nobody Fri Feb 13 00:44:21 2026 X-Original-To: virtualization@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4fBtj34N8mz6S1tw for ; Fri, 13 Feb 2026 00:44:23 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R13" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4fBtj33k80z4DvR for ; Fri, 13 Feb 2026 00:44:23 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) DKIM-Signature: v=1; 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Fri, 13 Feb 2026 00:44:23 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 61D0iNi8039807 for ; Fri, 13 Feb 2026 00:44:23 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 61D0iNFl039806 for virtualization@FreeBSD.org; Fri, 13 Feb 2026 00:44:23 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 291768] bhyve won't boot anything on 15.0 - AMD EPYC 9124 Date: Fri, 13 Feb 2026 00:44:21 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bhyve X-Bugzilla-Version: 15.0-RELEASE X-Bugzilla-Keywords: regression X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: freebsd@fizz.buzz X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: virtualization@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D291768 Tom changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |freebsd@fizz.buzz --- Comment #21 from Tom --- *** Bug 293147 has been marked as a duplicate of this bug. *** --=20 You are receiving this mail because: You are the assignee for the bug.= From nobody Fri Feb 13 00:58:22 2026 X-Original-To: virtualization@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4fBv1B60lCz6S35k for ; Fri, 13 Feb 2026 00:58:22 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R13" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4fBv1B5YY9z4Fxc for ; 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Fri, 13 Feb 2026 00:58:22 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 61D0wMaT056296 for ; Fri, 13 Feb 2026 00:58:22 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 61D0wMeR056295 for virtualization@FreeBSD.org; Fri, 13 Feb 2026 00:58:22 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 291768] bhyve won't boot anything on 15.0 - AMD EPYC 9124 Date: Fri, 13 Feb 2026 00:58:22 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bhyve X-Bugzilla-Version: 15.0-RELEASE X-Bugzilla-Keywords: regression X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: freebsd@fizz.buzz X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: virtualization@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D291768 --- Comment #22 from Tom --- I had the same issue with the same processor and the workaround to set vm.pmap.la57=3D0 worked for me. --=20 You are receiving this mail because: You are the assignee for the bug.= From nobody Fri Feb 13 01:23:31 2026 X-Original-To: virtualization@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4fBvZF0CpYz6S4hj for ; Fri, 13 Feb 2026 01:23:33 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R13" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4fBvZD6mhmz4K5M for ; 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Fri, 13 Feb 2026 01:23:32 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 61D1NWaT000078 for ; Fri, 13 Feb 2026 01:23:32 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 61D1NWF5000077 for virtualization@FreeBSD.org; Fri, 13 Feb 2026 01:23:32 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 291768] bhyve won't boot anything on 15.0 - AMD EPYC 9124 Date: Fri, 13 Feb 2026 01:23:31 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bhyve X-Bugzilla-Version: 15.0-RELEASE X-Bugzilla-Keywords: regression X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: freebsd@fizz.buzz X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: virtualization@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D291768 --- Comment #23 from Tom --- One oddity I've noticed that might be related: A bunch of CPU feature flags= are missing inside the guest including LA57. I've reproduced this with both a FreeBSD guest and a Linux guest. The flags that are present on the FreeBSD host but not the FreeBSD guest: INVPCID,PQM,PQE,ADX,AVX512IFMA,CLFLUSHOPT,CLWB,AVX512VBMI,UMIP,PKU,OSPKE,AV= X512VBMI2,GFNI,AVX512VNNI,AVX512BITALG,AVX512VPOPCNTDQ,LA57,RDPID I compiled a test C program that uses AVX512IFMA instructions, and ran it inside the guest virtual machine. It ran successfully, proving the instruct= ions work. It's just the flags are missing. I stumbled upon this because it breaks compiling some Qt software under Lin= ux with -march=3Dznver4 despite the CPU being a Zen 4 CPU. FreeBSD Host: ``` $ cat /var/run/dmesg.boot| grep -i "structured extended" Structured Extended Features=3D0xf1bf97a9 Structured Extended Features2=3D0x415fde ``` FreeBSD Guest: ``` $ cat /var/run/dmesg.boot| grep -i "structured extended" Structured Extended Features=3D0xf01703a9 Structured Extended Features2=3D0x600 ``` --=20 You are receiving this mail because: You are the assignee for the bug.= From nobody Fri Feb 13 02:01:32 2026 X-Original-To: freebsd-virtualization@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4fBwQM1dJpz6S8Cg for ; Fri, 13 Feb 2026 02:01:47 +0000 (UTC) (envelope-from emil@etsalapatis.com) Received: from mail-yx1-xb134.google.com (mail-yx1-xb134.google.com [IPv6:2607:f8b0:4864:20::b134]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "WR4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4fBwQL1PS4z4MH7 for ; 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Thu, 12 Feb 2026 18:01:43 -0800 (PST) List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org MIME-Version: 1.0 References: In-Reply-To: From: Emil Tsalapatis Date: Thu, 12 Feb 2026 21:01:32 -0500 X-Gm-Features: AZwV_QhvbTJ5txRxREa9e3AWY3sdtNWdGjT-KJ6AAShtyjn93JY47qq7nd0-pVs Message-ID: Subject: Re: RFC: Kernel virtiofs driver To: Oleg Sidorkin Cc: Mario Marietto , FreeBSD virtualization Content-Type: multipart/alternative; boundary="000000000000a11674064aaafcf5" X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US] X-Rspamd-Queue-Id: 4fBwQL1PS4z4MH7 X-Spamd-Bar: ---- --000000000000a11674064aaafcf5 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Thu, Feb 12, 2026 at 9:01=E2=80=AFAM Oleg Sidorkin = wrote: > Hello. > > My favorite test to run in bhyve guest: > > root@:/usr/src # uname -a > FreeBSD 16.0-CURRENT FreeBSD 16.0-CURRENT #1 > main-n283712-16c902f05853: Sat Feb 7 02:10:47 MSK 2026 > olsi@:/usr/obj/usr/src/amd64.amd64/sys/QUADKERNEL amd64 > root@:/usr/src # mount > /dev/vtbd0p2 on / (ufs, local, soft-updates, journaled soft-updates) > devfs on /dev (devfs) > obj on /usr/obj (p9fs, local) > 192.168.2.1:/vms/freebsd-current/usr/home on /usr/home (nfs) > 192.168.2.1:/vms/freebsd-current/usr/src on /usr/src (nfs) > 192.168.2.1:/vms/freebsd-current/usr/lib/debug on /usr/lib/debug (nfs) > 192.168.2.1:/usr/ports/distfiles on /usr/ports/distfiles (nfs) > root@:/usr/src # make -j4 buildworld buildkernel > > Panics guest system in a few minutes (everything is ok when /obj is > mounted over nfs): > > db> bt > Tracing pid 2248 tid 100165 td 0xfffff80100eb8780 > kdb_enter() at kdb_enter+0x33/frame 0xfffffe006833e560 > panic() at panic+0x43/frame 0xfffffe006833e5c0 > freevnode() at freevnode+0x2d5/frame 0xfffffe006833e620 > vput_final() at vput_final+0x96/frame 0xfffffe006833e670 > vfs_hash_insert() at vfs_hash_insert+0x226/frame 0xfffffe006833e6c0 > p9fs_vget_common() at p9fs_vget_common+0x39b/frame 0xfffffe006833e770 > p9fs_lookup() at p9fs_lookup+0x4ad/frame 0xfffffe006833e8c0 > VOP_LOOKUP_APV() at VOP_LOOKUP_APV+0x57/frame 0xfffffe006833e8f0 > vfs_lookup() at vfs_lookup+0x5aa/frame 0xfffffe006833e980 > namei() at namei+0x35d/frame 0xfffffe006833e9e0 > kern_execve() at kern_execve+0x2d1/frame 0xfffffe006833ed80 > sys_execve() at sys_execve+0x54/frame 0xfffffe006833ee00 > amd64_syscall() at amd64_syscall+0x169/frame 0xfffffe006833ef30 > fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe006833ef3= 0 > --- syscall (59, FreeBSD ELF64, execve), rip =3D 0x2cc73682f46a, rsp =3D > 0x2cc731eb2028, rbp =3D 0x2cc731eb2170 --- > db> > > I'll be really happy to test virtiofs and I hope it will do better. > > If you hit any bugs, let me know! I'd be happy to take a look. Please include some additional patches apart from the two diffs ( https://github.com/etsal/freebsd-src/tree/virtiofs), that handle some issues virtiofs was triggering in the FUSE layer (D55047 , D55046 ). Also, if you could try running with a debugging kernel I'd really appreciate it - it will help us better interpret any issues. For example, with a config like this: include GENERIC ident DEBUG options KDB # Enable kernel debugger support. options KDB_TRACE # Print a stack trace for a panic. options DDB options DDB_NUMSYM options GDB options INVARIANTS options INVARIANT_SUPPORT options DIAGNOSTIC # KTR options KTR options ALQ options KTR_ALQ # KASAN options KASAN Thanks, Emil > Thanks > > =D0=B2=D1=82, 10 =D1=84=D0=B5=D0=B2=D1=80. 2026=E2=80=AF=D0=B3. =D0=B2 09= :57, Mario Marietto : > > > > Hello Emil, > > > > Inside a FreeBSD guest OS (15.0-RELEASE) I do : > > > > kldload virtio_p9fs > > > > kldload p9fs_load > > > > mount -t p9fs sharename /mnt/host > > > > This works for me,I can share files between FreeBSD 15.0 guest and > FreeBSD 14.3 host os. So,what's missing in this case and which features y= ou > added ? > > > > Thanks. > > > > > > > > On Tue, Feb 10, 2026 at 4:05=E2=80=AFAM Emil Tsalapatis > wrote: > >> > >> Hi everyone, > >> > >> I recently finished the virtiofs driver and it is now ready for > review. The device allows for sharing directories between a FreeBSD guest > and a host. > >> > >> The driver really is two components: > >> > >> 1) The virtio device that sends FUSE tickets to and from the host: > D46295 > >> 2) The file system that gets mounted in the guest: D46296. > >> > >> To test it you need a couple additional fixes/workarounds for > FUSE-related issues. You can grab a working tree here or apply diffs D550= 47 > and D55046. D55046 is a workaround, but still prevents an assertion failu= re > related to FUSE caching until the underlying issue is properly fixed on > HEAD. > >> > >> To use it, make sure you are creating virtiofs device on the host then > from the FreeBSD guest run > >> > >> mount -t virtiofs > >> > >> where is the name tag you gave to the virtiofs device in the hos= t > VMM. > >> > >> Reviews and testing welcome! > >> > >> Thanks, > >> Emil > >> > >> > > > > > > -- > > Mario. > > > > -- > Oleg Sidorkin > --000000000000a11674064aaafcf5 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
On Thu, Feb 12, 2026 at 9:01=E2=80= =AFAM Oleg Sidorkin <osidorkin@gmail.com> wrote:
Hello.

My favorite test to run in bhyve guest:

root@:/usr/src # uname -a
FreeBSD=C2=A0 16.0-CURRENT FreeBSD 16.0-CURRENT #1
main-n283712-16c902f05853: Sat Feb=C2=A0 7 02:10:47 MSK 2026
olsi@:/usr/obj/usr/src/amd64.amd64/sys/QUADKERNEL amd64
root@:/usr/src # mount
/dev/vtbd0p2 on / (ufs, local, soft-updates, journaled soft-updates)
devfs on /dev (devfs)
obj on /usr/obj (p9fs, local)
192.168.2.1:/vms/freebsd-current/usr/home on /usr/home (nfs)
192.168.2.1:/vms/freebsd-current/usr/src on /usr/src (nfs)
192.168.2.1:/vms/freebsd-current/usr/lib/debug on /usr/lib/debug (nfs)
192.168.2.1:/usr/ports/distfiles on /usr/ports/distfiles (nfs)
root@:/usr/src # make -j4 buildworld buildkernel

Panics guest system in a few minutes (everything is ok when /obj is
mounted over nfs):

db> bt
Tracing pid 2248 tid 100165 td 0xfffff80100eb8780
kdb_enter() at kdb_enter+0x33/frame 0xfffffe006833e560
panic() at panic+0x43/frame 0xfffffe006833e5c0
freevnode() at freevnode+0x2d5/frame 0xfffffe006833e620
vput_final() at vput_final+0x96/frame 0xfffffe006833e670
vfs_hash_insert() at vfs_hash_insert+0x226/frame 0xfffffe006833e6c0
p9fs_vget_common() at p9fs_vget_common+0x39b/frame 0xfffffe006833e770
p9fs_lookup() at p9fs_lookup+0x4ad/frame 0xfffffe006833e8c0
VOP_LOOKUP_APV() at VOP_LOOKUP_APV+0x57/frame 0xfffffe006833e8f0
vfs_lookup() at vfs_lookup+0x5aa/frame 0xfffffe006833e980
namei() at namei+0x35d/frame 0xfffffe006833e9e0
kern_execve() at kern_execve+0x2d1/frame 0xfffffe006833ed80
sys_execve() at sys_execve+0x54/frame 0xfffffe006833ee00
amd64_syscall() at amd64_syscall+0x169/frame 0xfffffe006833ef30
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe006833ef30<= br> --- syscall (59, FreeBSD ELF64, execve), rip =3D 0x2cc73682f46a, rsp =3D 0x2cc731eb2028, rbp =3D 0x2cc731eb2170 ---
db>

I'll be really happy to test virtiofs and I hope it will do better.


If you hit any bugs, let me know!= I'd be happy to take a look. Please include some additional patches ap= art from the two diffs (https://github.com/etsal/freebsd-src/tree/vir= tiofs), that handle some issues virtiofs was triggering in the FUSE lay= er (D55047= , D550= 46).

Also, if you could try running with a debugging kernel I'd really appreciate= =20 it - it will help us better interpret any issues. For example, with a=20 config like this:

include GENERIC

ident =C2= =A0 DEBUG

options =C2=A0 =C2=A0 =C2=A0 =C2=A0 KDB =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 # Enable kernel debugg= er support.
options =C2=A0 =C2=A0 =C2=A0 =C2=A0 KDB_TRACE =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 # Print a stack trace for a panic.
op= tions =C2=A0 =C2=A0 =C2=A0 =C2=A0 DDB
options =C2=A0 =C2=A0 =C2=A0 =C2= =A0 DDB_NUMSYM
options =C2=A0 =C2=A0 =C2=A0 =C2=A0 GDB

options = =C2=A0 =C2=A0 =C2=A0 =C2=A0 INVARIANTS
options =C2=A0 =C2=A0 =C2=A0 =C2= =A0 INVARIANT_SUPPORT
options =C2=A0 =C2=A0 =C2=A0 =C2=A0 DIAGNOSTIC
=
# KTR
options =C2=A0 =C2=A0 =C2=A0 =C2=A0 KTR
options =C2=A0 =C2= =A0 =C2=A0 =C2=A0 ALQ
options =C2=A0 =C2=A0 =C2=A0 =C2=A0 KTR_ALQ
# KASAN
options KASAN


Thanks,
Emil


=C2=A0
Thanks

=D0=B2=D1=82, 10 =D1=84=D0=B5=D0=B2=D1=80. 2026=E2=80=AF=D0=B3. =D0=B2 09:5= 7, Mario Marietto <marietto2008@gmail.com>:
>
> Hello Emil,
>
> Inside a FreeBSD guest OS (15.0-RELEASE) I do :
>
> kldload virtio_p9fs
>
> kldload p9fs_load
>
> mount -t p9fs sharename /mnt/host
>
> This works for me,I can share files between FreeBSD 15.0 guest and Fre= eBSD 14.3 host os. So,what's missing in this case and which features yo= u added ?
>
> Thanks.
>
>
>
> On Tue, Feb 10, 2026 at 4:05=E2=80=AFAM Emil Tsalapatis <emil@etsalapatis.com>= ; wrote:
>>
>> Hi everyone,
>>
>>=C2=A0 =C2=A0 =C2=A0I recently finished the virtiofs driver and it = is now ready for review. The device allows for sharing directories between = a FreeBSD guest and a host.
>>
>> The driver really is two components:
>>
>> 1) The virtio device that sends FUSE tickets to and from the host:= D46295
>> 2) The file system that gets mounted in the guest: D46296.
>>
>> To test it you need a couple additional fixes/workarounds for FUSE= -related issues. You can grab a working tree here or apply diffs D55047 and= D55046. D55046 is a workaround, but still prevents an assertion failure re= lated to FUSE caching until the underlying issue is properly fixed on HEAD.=
>>
>> To use it, make sure you are creating virtiofs device on the host = then from the FreeBSD guest run
>>
>> mount -t virtiofs <tag> <mountpoint>
>>
>> where <tag> is the name tag you gave to the virtiofs device = in the host VMM.
>>
>> Reviews and testing welcome!
>>
>> Thanks,
>> Emil
>>
>>
>
>
> --
> Mario.



--
Oleg Sidorkin
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Sun, 15 Feb 2026 06:54:48 -0800 (PST) List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org MIME-Version: 1.0 References: In-Reply-To: From: Oleg Sidorkin Date: Sun, 15 Feb 2026 17:54:37 +0300 X-Gm-Features: AZwV_QiP5vFO4gTcP75Tr7P6svVUzic9yKzZuNROKrCx4DnhN2uIrgpfTEBV_s0 Message-ID: Subject: Re: RFC: Kernel virtiofs driver To: Mario Marietto Cc: Emil Tsalapatis , FreeBSD virtualization Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Spamd-Result: default: False [-4.97 / 15.00]; ARC_ALLOW(-1.00)[google.com:s=arc-20240605:i=1]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-0.99)[-0.993]; NEURAL_HAM_SHORT(-0.97)[-0.974]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20230601]; MIME_GOOD(-0.10)[text/plain]; DKIM_TRACE(0.00)[gmail.com:+]; TO_DN_ALL(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; FREEMAIL_TO(0.00)[gmail.com]; RCVD_TLS_LAST(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_FROM(0.00)[gmail.com]; RCPT_COUNT_THREE(0.00)[3]; FROM_HAS_DN(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::830:from]; PREVIOUSLY_DELIVERED(0.00)[freebsd-virtualization@freebsd.org]; TO_MATCH_ENVRCPT_SOME(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; MISSING_XM_UA(0.00)[]; MID_RHS_MATCH_FROMTLD(0.00)[]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; MLMMJ_DEST(0.00)[freebsd-virtualization@freebsd.org]; RCVD_COUNT_ONE(0.00)[1]; FREEMAIL_ENVFROM(0.00)[gmail.com] X-Rspamd-Queue-Id: 4fDTTP6kDkz3bMQ X-Spamd-Bar: ---- =D1=87=D1=82, 12 =D1=84=D0=B5=D0=B2=D1=80. 2026=E2=80=AF=D0=B3. =D0=B2 20:1= 5, Mario Marietto : > > --> Panics guest system in a few minutes (everything is ok when /obj is..= . > > FreeBSD 16 is working in progress ; virtiofs is work in progress...what d= o you expect ? p9fs has been in the base system since 15.0 AFAIK, and it doesn't receive many fixes. virtiofs (a.k.a. fuse over virtual socket) was created in linux world because plan9 abstractions didn't fit linux VFS layer well. Since Linux VFS and FreeBSD VFS both have to handle POSIX API, they have to be a little similar. So I expect less bugs. > > On Thu, Feb 12, 2026 at 3:01=E2=80=AFPM Oleg Sidorkin wrote: >> >> Hello. >> >> My favorite test to run in bhyve guest: >> >> root@:/usr/src # uname -a >> FreeBSD 16.0-CURRENT FreeBSD 16.0-CURRENT #1 >> main-n283712-16c902f05853: Sat Feb 7 02:10:47 MSK 2026 >> olsi@:/usr/obj/usr/src/amd64.amd64/sys/QUADKERNEL amd64 >> root@:/usr/src # mount >> /dev/vtbd0p2 on / (ufs, local, soft-updates, journaled soft-updates) >> devfs on /dev (devfs) >> obj on /usr/obj (p9fs, local) >> 192.168.2.1:/vms/freebsd-current/usr/home on /usr/home (nfs) >> 192.168.2.1:/vms/freebsd-current/usr/src on /usr/src (nfs) >> 192.168.2.1:/vms/freebsd-current/usr/lib/debug on /usr/lib/debug (nfs) >> 192.168.2.1:/usr/ports/distfiles on /usr/ports/distfiles (nfs) >> root@:/usr/src # make -j4 buildworld buildkernel >> >> Panics guest system in a few minutes (everything is ok when /obj is >> mounted over nfs): >> >> db> bt >> Tracing pid 2248 tid 100165 td 0xfffff80100eb8780 >> kdb_enter() at kdb_enter+0x33/frame 0xfffffe006833e560 >> panic() at panic+0x43/frame 0xfffffe006833e5c0 >> freevnode() at freevnode+0x2d5/frame 0xfffffe006833e620 >> vput_final() at vput_final+0x96/frame 0xfffffe006833e670 >> vfs_hash_insert() at vfs_hash_insert+0x226/frame 0xfffffe006833e6c0 >> p9fs_vget_common() at p9fs_vget_common+0x39b/frame 0xfffffe006833e770 >> p9fs_lookup() at p9fs_lookup+0x4ad/frame 0xfffffe006833e8c0 >> VOP_LOOKUP_APV() at VOP_LOOKUP_APV+0x57/frame 0xfffffe006833e8f0 >> vfs_lookup() at vfs_lookup+0x5aa/frame 0xfffffe006833e980 >> namei() at namei+0x35d/frame 0xfffffe006833e9e0 >> kern_execve() at kern_execve+0x2d1/frame 0xfffffe006833ed80 >> sys_execve() at sys_execve+0x54/frame 0xfffffe006833ee00 >> amd64_syscall() at amd64_syscall+0x169/frame 0xfffffe006833ef30 >> fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe006833ef= 30 >> --- syscall (59, FreeBSD ELF64, execve), rip =3D 0x2cc73682f46a, rsp =3D >> 0x2cc731eb2028, rbp =3D 0x2cc731eb2170 --- >> db> >> >> I'll be really happy to test virtiofs and I hope it will do better. >> >> Thanks >> >> =D0=B2=D1=82, 10 =D1=84=D0=B5=D0=B2=D1=80. 2026=E2=80=AF=D0=B3. =D0=B2 0= 9:57, Mario Marietto : >> > >> > Hello Emil, >> > >> > Inside a FreeBSD guest OS (15.0-RELEASE) I do : >> > >> > kldload virtio_p9fs >> > >> > kldload p9fs_load >> > >> > mount -t p9fs sharename /mnt/host >> > >> > This works for me,I can share files between FreeBSD 15.0 guest and Fre= eBSD 14.3 host os. So,what's missing in this case and which features you ad= ded ? >> > >> > Thanks. >> > >> > >> > >> > On Tue, Feb 10, 2026 at 4:05=E2=80=AFAM Emil Tsalapatis wrote: >> >> >> >> Hi everyone, >> >> >> >> I recently finished the virtiofs driver and it is now ready for r= eview. The device allows for sharing directories between a FreeBSD guest an= d a host. >> >> >> >> The driver really is two components: >> >> >> >> 1) The virtio device that sends FUSE tickets to and from the host: D4= 6295 >> >> 2) The file system that gets mounted in the guest: D46296. >> >> >> >> To test it you need a couple additional fixes/workarounds for FUSE-re= lated issues. You can grab a working tree here or apply diffs D55047 and D5= 5046. D55046 is a workaround, but still prevents an assertion failure relat= ed to FUSE caching until the underlying issue is properly fixed on HEAD. >> >> >> >> To use it, make sure you are creating virtiofs device on the host the= n from the FreeBSD guest run >> >> >> >> mount -t virtiofs >> >> >> >> where is the name tag you gave to the virtiofs device in the ho= st VMM. >> >> >> >> Reviews and testing welcome! >> >> >> >> Thanks, >> >> Emil >> >> >> >> >> > >> > >> > -- >> > Mario. >> >> >> >> -- >> Oleg Sidorkin > > > > -- > Mario. --=20 Oleg Sidorkin From nobody Sun Feb 15 15:12:23 2026 X-Original-To: virtualization@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4fDTsg4LMXz6RgjW for ; Sun, 15 Feb 2026 15:12:23 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R13" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4fDTsg29Mxz3cqn for ; 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Sun, 15 Feb 2026 15:12:23 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 61FFCNw4017760 for ; Sun, 15 Feb 2026 15:12:23 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 61FFCNw4017759 for virtualization@FreeBSD.org; Sun, 15 Feb 2026 15:12:23 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 285853] hv_hid: kernel built with -O0 panics in hv_hid_probe() Date: Sun, 15 Feb 2026 15:12:23 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 15.0-CURRENT X-Bugzilla-Keywords: crash X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: titus@v9g.de X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: virtualization@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: attachments.created Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D285853 --- Comment #1 from Titus von Boxberg --- Created attachment 268076 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D268076&action= =3Dedit dmesg for hv_hid crash For me the crash occurs with a fresh installation of the standard 15.0-RELE= ASE GENERIC kernel. Tried both the 15.0-RELEASE prebuilt VHD as well as a regular installation = from the iso. The system is unusable until I remove /boot/kernel/hv_hid.ko --=20 You are receiving this mail because: You are the assignee for the bug.= From nobody Sun Feb 15 21:00:02 2026 X-Original-To: virtualization@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4fDdZq02MDz6SKkx for ; Sun, 15 Feb 2026 21:00:03 +0000 (UTC) (envelope-from bugzilla-noreply@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R13" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4fDdZp3KBmz3DrG for ; Sun, 15 Feb 2026 21:00:02 +0000 (UTC) (envelope-from bugzilla-noreply@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1771189202; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=jUneiiN5cRGscFe1AoWn4WubppFnXvAqxwWuh9z5+NE=; b=i0yFG7xabKEXovy1YvKrZkYW8+3f99jP59eL02n5QunRQ2Tysf1kdhQZLxaL/ku8N48VIq MmYIB8u78WxHwyZaSIaAvUiLwU6ZXwBoJ9PnGu+QYxmq7EZ0iirqyRXpRtJoWOgv7nii71 nmQ7s2A4Jca7IQBo3jBZd63sIfNiWl0kdBq+AfMEbyo5UDw076qG7N9TLr5q+CjKg9c9E0 HFYpR8veX07oUaBCECcbGNUZextUKrUeFQOeVW4NTKe0ZvOzZ7P2XtrcVntBpdkCDoQjcJ i8SS8WXDHqn5ISy/+5pAS2TWtt5M7IrNT/4OEH2Mv5w8kCxN5Zjdswp90fstuw== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1771189202; a=rsa-sha256; cv=none; b=ZFyz1l9lIHfUbnkNTEFZ8UbBBLmCGnih3l06bPj+YazfDvnSw46V8yIkCJsddSL14ypEfI uvB3WRpTBaa6DJQCfsR9u5th9w8fQGsK28xSYfjoam+HDV1Bj7+OxFaMYtDoyw0u20T3xq HD0w9q9G/ofh2XgtPRDXQCp/DHN2tKGQg75ifEclY/+9m+xEt367BG34dpGQ155VfbcHAT rmFiITzY7zXXXWccPXFvQ9MF0ClVRMHwIIG/MqMkn1esQci2umqZTmCZmRnxPMHdk49s4w NdqixLfqM45rylZ6SVRMY7Riys6F+ZoZREPf1CFMCkNR0pz+Et86xvtWyGZTww== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1771189202; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=jUneiiN5cRGscFe1AoWn4WubppFnXvAqxwWuh9z5+NE=; b=FSgpdDRmd6DwOqvFivulRhHzodjoouE5mwG5H5Zszc5KBroHoFqC2LeG0vTfwdlxLyrEpN hzsN0h8jvrpURukLvtvneefYsm79j03uQ1omIuOVYZt4sz4Sikn2AW1x2mKMqpeB6fq7HB iwzRNNlI2rm4r1ZBwJKaIVp89htANKK+5VdtNJ39Svrtdr4bLPaOrtUc/1ZjWhm5QW6GYy 2f/Ne52ODwAIX1geeK6v54nhbHh2M1iglRZd2aYpqK9+yU4BZXJE+PQwM2a4eGFXvWUOpS /pvjvhzx+NCElRWksB6tIR3t6ETD0/poIzsXQmXSLyCRrK20M9HFMaulTojtTw== Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4fDdZp2vb0z1843 for ; Sun, 15 Feb 2026 21:00:02 +0000 (UTC) (envelope-from bugzilla-noreply@FreeBSD.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 61FL02xG053795 for ; Sun, 15 Feb 2026 21:00:02 GMT (envelope-from bugzilla-noreply@FreeBSD.org) Received: (from bugzilla@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 61FL02B5053791 for virtualization@FreeBSD.org; Sun, 15 Feb 2026 21:00:02 GMT (envelope-from bugzilla-noreply@FreeBSD.org) Message-Id: <202602152100.61FL02B5053791@kenobi.freebsd.org> X-Authentication-Warning: kenobi.freebsd.org: bugzilla set sender to bugzilla-noreply@FreeBSD.org using -f From: bugzilla-noreply@FreeBSD.org To: virtualization@FreeBSD.org Subject: Problem reports for virtualization@FreeBSD.org that need special attention Date: Sun, 15 Feb 2026 21:00:02 +0000 List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="17711892022.2C36Df3.52987" Content-Transfer-Encoding: 7bit --17711892022.2C36Df3.52987 Date: Sun, 15 Feb 2026 21:00:02 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" To view an individual PR, use: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=(Bug Id). The following is a listing of current problems submitted by FreeBSD users, which need special attention. These represent problem reports covering all versions including experimental development code and obsolete releases. Status | Bug Id | Description ------------+-----------+--------------------------------------------------- New | 289848 | Enable by default BHYVE_SNAPSHOT 1 problems total for which you should take action. --17711892022.2C36Df3.52987 Date: Sun, 15 Feb 2026 21:00:02 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8" 
The following is a listing of current problems submitted by FreeBSD users,
which need special attention. These represent problem reports covering
all versions including experimental development code and obsolete releases.

Status      |    Bug Id | Description
------------+-----------+---------------------------------------------------
New         |    289848 | Enable by default BHYVE_SNAPSHOT

1 problems total for which you should take action.
--17711892022.2C36Df3.52987--