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micalg="pgp-sha512"; protocol="application/pgp-signature"; boundary="=-GbfmjnSPVdooT02r95aK" User-Agent: Evolution 3.56.2-0+deb13u1 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 List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 --=-GbfmjnSPVdooT02r95aK Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Fri, 2026-06-05 at 11:20 -0500, Matthew Grooms wrote: > On 6/5/26 01:34, Corvin K=C3=B6hne wrote: > > On Thu, 2026-06-04 at 13:23 +0200, Mario Marietto wrote: > > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0Hi everyone, > > > =C2=A0=C2=A0I'm trying to get NVIDIA GPU passthrough working with bhy= ve on FreeBSD > > > 15.0- > > > RELEASE-p5, using Corvin K=C3=B6hne's nvidia-wip branch: > > > =C2=A0=C2=A0 > > > https://github.com/Beckhoff/freebsd-src/tree/phab/corvink/15.0/nvidia= -wip > > > =C2=A0=C2=A0The VM fails to start with the following error before the= guest even > > > boots: > > > =C2=A0=C2=A0bhyve: bootrom_alloc: vm_mmap_mapseg: Invalid argument > > NVIDIA GPU passthrough should work with stock 15.0, no patches required= . >=20 > I was about to attempt this myself. Are all the required patches present= =20 > in 14.4 as well? >=20 > Thanks, >=20 > -Matthew >=20 Yes, the required patch is present in 14.4 as well. --=20 Best regards, Corvin --=-GbfmjnSPVdooT02r95aK Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- iQJIBAABCgAyFiEEgvRSla3m2t/H2U9G2FTaVjFeAmoFAmomY78UHGNvcnZpbmtA ZnJlZWJzZC5vcmcACgkQ2FTaVjFeAmrTHxAAgYEN/BWrXeWO11gMJedrQ4EOaAoR m1AETW3REJv7t1TYmWXG7Gf9X43WzIogxoVT8Wrx1b8R3fR9m1lZhlFyrj3d7NAO 9Kcq6lSyjevFoZ7w4KaVZbsHsuZLSQb4kipbVy/fVZ6EC5t5bSUCiAHF8uxbgMPL M5gTEfNRKgtrlK2V2a9XkUbzq0gGl0RphbhrxFICC6Km4eY9dmVzILkhgZxYNqGH 95JMmvzSmldW2XgSgWWP6MUXpY/ADiFZoJt7dVYCL2omxwrJ36fZGHtfSsf+3kEx Krix1HT6UQF8GLir94ckj8PNL/cEiHfSMgoLeUINfe8s6fd6Qn5CO7AedYuPOGVL Ma4baJi1cYeNOSIxqDUQY2cMInK3FDsGi0x95qw+QwMoNT8gemg6A2MvYEc5eaFl WcSrUvV/N0Npt3jFY+Je6GIx4Qmtvsrc8J3O6xuf0eoVEs2NuWGG5hUYR/8r725w KlFyOlUEUJ0W1UkS5s8vPfS5OJD4V9YgdWAjQtsiOvaW4m71cED4ESfZFgaBYybo 16ybwy/7UQwcuRTigY3dyj3dsLePFIdizJUniZedjBTADB869FLNJArwHGM7It3c 6qU5/ZEhuknpr+fb3JFgyAsD7+D8eygjJm5rGmm3rtHJLsPuIi8rcR9oFHXcxDzD mWNCBsmFrIWRT0I= =UdGt -----END PGP SIGNATURE----- --=-GbfmjnSPVdooT02r95aK-- From nobody Mon Jun 8 08:03:08 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 4gYl135HCpz6h3p1 for ; 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Mon, 08 Jun 2026 01:03:44 -0700 (PDT) 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 List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 References: <1bbf28a7-7025-4d83-937d-72d8583048ca@shrew.net> In-Reply-To: From: Mario Marietto Date: Mon, 8 Jun 2026 10:03:08 +0200 X-Gm-Features: AVVi8Cf5rjCmZwysIZ18PL1qbOBhenneiZkA_8_5UNKmkJW9AHQgYoLXtPirSRM Message-ID: Subject: =?UTF-8?Q?Re=3A_=2A=2A=5BHelp=5D_bhyve=3A_bootrom=5Falloc=3A_vm=5Fmmap=5Fmapseg=3A_I?= =?UTF-8?Q?nvalid_argument_=E2=80=94_NVIDIA_passthrough_with_Corvin=27s_branch_?= =?UTF-8?Q?on_FreeBSD_15=2E0=2A=2A?= To: =?UTF-8?Q?Corvin_K=C3=B6hne?= Cc: Matthew Grooms , virtualization@freebsd.org Content-Type: multipart/alternative; boundary="00000000000011937b0653b9735d" 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: 4gYl131p4yz3cW8 X-Spamd-Bar: ---- X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated --00000000000011937b0653b9735d Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable --> Yes, the required patch is present in 14.4 as well. Can you point me to the required patche that you are talking about ? thanks. On Mon, Jun 8, 2026 at 8:40=E2=80=AFAM Corvin K=C3=B6hne wrote: > On Fri, 2026-06-05 at 11:20 -0500, Matthew Grooms wrote: > > On 6/5/26 01:34, Corvin K=C3=B6hne wrote: > > > On Thu, 2026-06-04 at 13:23 +0200, Mario Marietto wrote: > > > > Hi everyone, > > > > I'm trying to get NVIDIA GPU passthrough working with bhyve on > FreeBSD > > > > 15.0- > > > > RELEASE-p5, using Corvin K=C3=B6hne's nvidia-wip branch: > > > > > > > > > https://github.com/Beckhoff/freebsd-src/tree/phab/corvink/15.0/nvidia-wip > > > > The VM fails to start with the following error before the guest > even > > > > boots: > > > > bhyve: bootrom_alloc: vm_mmap_mapseg: Invalid argument > > > NVIDIA GPU passthrough should work with stock 15.0, no patches > required. > > > > I was about to attempt this myself. Are all the required patches presen= t > > in 14.4 as well? > > > > Thanks, > > > > -Matthew > > > > Yes, the required patch is present in 14.4 as well. > > > -- > Best regards, > Corvin > --=20 Mario. --00000000000011937b0653b9735d Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
--> Yes, the required patch is present in 14.4 as = well.

Can you point me to the required patche that= you are talking about ?

thanks.

On Mon, Jun = 8, 2026 at 8:40=E2=80=AFAM Corvin K=C3=B6hne <corvink@freebsd.org> wrote:
=
On Fri, 2026-06-05 at 11:= 20 -0500, Matthew Grooms wrote:
> On 6/5/26 01:34, Corvin K=C3=B6hne wrote:
> > On Thu, 2026-06-04 at 13:23 +0200, Mario Marietto wrote:
> > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0Hi eve= ryone,
> > > =C2=A0=C2=A0I'm trying to get NVIDIA GPU passthrough wor= king with bhyve on FreeBSD
> > > 15.0-
> > > RELEASE-p5, using Corvin K=C3=B6hne's nvidia-wip branch:=
> > > =C2=A0=C2=A0
> > > https://gith= ub.com/Beckhoff/freebsd-src/tree/phab/corvink/15.0/nvidia-wip
> > > =C2=A0=C2=A0The VM fails to start with the following error b= efore the guest even
> > > boots:
> > > =C2=A0=C2=A0bhyve: bootrom_alloc: vm_mmap_mapseg: Invalid ar= gument
> > NVIDIA GPU passthrough should work with stock 15.0, no patches re= quired.
>
> I was about to attempt this myself. Are all the required patches prese= nt
> in 14.4 as well?
>
> Thanks,
>
> -Matthew
>

Yes, the required patch is present in 14.4 as well.


--
Best regards,
Corvin


--
Ma= rio.
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Mon, 08 Jun 2026 02:34:34 -0700 (PDT) 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 List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 From: Mario Marietto Date: Mon, 8 Jun 2026 11:33:57 +0200 X-Gm-Features: AVVi8CcRnY3lFMvWL7S1oZO_9urylWo34x3-J-f_pGD-SKclGu9FN4I6HHsaJms Message-ID: Subject: How FLR has been implemented inside the Corvin's code for the nVidia GPU. To: FreeBSD virtualization , =?UTF-8?Q?Corvin_K=C3=B6hne?= , =?UTF-8?Q?Corvin_K=C3=B6hne?= Content-Type: multipart/alternative; boundary="000000000000e50b940653bab7ff" X-Spamd-Result: default: False [-4.95 / 15.00]; ARC_ALLOW(-1.00)[google.com:s=arc-20240605:i=1]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.95)[-0.949]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4864::/56:c]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20251104]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; TO_DN_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; RCVD_TLS_LAST(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; DKIM_TRACE(0.00)[gmail.com:+]; FREEMAIL_ENVFROM(0.00)[gmail.com]; FREEMAIL_FROM(0.00)[gmail.com]; RCPT_COUNT_THREE(0.00)[3]; RCVD_COUNT_ONE(0.00)[1]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; TO_MATCH_ENVRCPT_SOME(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::62d:from] X-Spamd-Bar: ---- X-Rspamd-Queue-Id: 4gYn1r5Yl1z3nHl --000000000000e50b940653bab7ff Content-Type: text/plain; charset="UTF-8" Hello Corvin and everyone. I'm continuing the development of the initial project of Abhinav Chavali, the VMM Accelerator support for QEMU : https://summerofcode.withgoogle.com/archive/2025/projects/lRkVElCJ It seems that it works fine,but I would like to know. How was FLR implemented in the code Corvin wrote to pass the NVIDIA GPU to a Linux-based VM? I ask because when I use the Corvin's patched bhyve, or perhaps his vmm, I don't see any system freezes when I load and unload the vmm module from memory. It used to happen at the beginning,I remember well, but later not anymore. However, when I do it with qemu accelerated with bhyve, the problem still occurs. I asked Claude to look into Corvin's code to understand how he handled it, but even after doing so, the problem persists. -- Mario. --000000000000e50b940653bab7ff Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hello Corvin and everyone.

I= 'm continuing the development of the initial project of Abhinav Chavali= , the VMM Accelerator support for QEMU :

=09
=09 =09 =09

https://summerofcode.withgoogle.com/archive/20= 25/projects/lRkVElCJ


It seems that it works fine,but I would like to know.

=
How was FLR implemented in the code Corvin= wrote to pass the NVIDIA GPU to a Linux-based VM? I ask because w= hen I use the Corvin's patched bhyve, or perhaps his vmm, I don't s= ee any system freezes when I load and unload the vmm module from memory. It use= d to happen at the beginning,I remember well, but later not anymore.= However, w= hen I do it with qemu accelerated with bhyve, the problem still occurs. I asked= Claude to look into Corvin's code to understand how he handled it, but= even after doing so, the problem persists.

--
Mario.
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Mon, 08 Jun 2026 23:41:31 -0700 (PDT) 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 List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 References: <1bbf28a7-7025-4d83-937d-72d8583048ca@shrew.net> <368dc4ea87fea1c1082c5e54e4140f3cb43075a9.camel@FreeBSD.org> In-Reply-To: <368dc4ea87fea1c1082c5e54e4140f3cb43075a9.camel@FreeBSD.org> From: Mario Marietto Date: Tue, 9 Jun 2026 08:40:53 +0200 X-Gm-Features: AVVi8CfXI474p8Cx9afwr1Jf0Wr_3Xpy4rrUaEUdG95RontKEkOHBH3QCjEPtj0 Message-ID: Subject: =?UTF-8?Q?Re=3A_=2A=2A=5BHelp=5D_bhyve=3A_bootrom=5Falloc=3A_vm=5Fmmap=5Fmapseg=3A_I?= =?UTF-8?Q?nvalid_argument_=E2=80=94_NVIDIA_passthrough_with_Corvin=27s_branch_?= =?UTF-8?Q?on_FreeBSD_15=2E0=2A=2A?= To: =?UTF-8?Q?Corvin_K=C3=B6hne?= Cc: Matthew Grooms , virtualization@freebsd.org Content-Type: multipart/alternative; boundary="000000000000d751980653cc6a58" 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: 4gZK7j3hm7z43xB X-Spamd-Bar: ---- X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated --000000000000d751980653cc6a58 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable ---> https://github.com/freebsd/freebsd- src/commit/effcd0ded0ef1c92bef29c1e9bbf517c97bb45b8 oh ok. That's not the bug I was talking about. You gave no reply about that (bhyve: bootrom_alloc: vm_mmap_mapseg: Invalid argument on FreeBSD 15*-RELEASE). On Tue, Jun 9, 2026 at 8:23=E2=80=AFAM Corvin K=C3=B6hne wrote: > On Mon, 2026-06-08 at 10:03 +0200, Mario Marietto wrote: > > --> Yes, the required patch is present in 14.4 as well. > > > > Can you point me to the required patche that you are talking about ? > > > > thanks. > > > > > > https://github.com/freebsd/freebsd- > src/commit/effcd0ded0ef1c92bef29c1e9bbf517c97bb45b8 > > > -- > Best regards, > Corvin > --=20 Mario. --000000000000d751980653cc6a58 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
--->=C2=A0https://github.com/freebsd/fre= ebsd-src/commit/effcd0ded0ef1c92bef29c1e9bbf517c97bb45b8

=
oh ok. That's not the bug I was talking about. You gave no r= eply about that (bhyve: bootrom_alloc: vm_mmap_mapseg: Invalid argument=C2=A0on F= reeBSD 15*-RELEASE).=C2=A0

On Tue, Jun 9, 2026 at 8:23=E2=80=AFAM Corvin K=C3=B6hne <corvink@freebsd.org> wrote:
On Mon, 2026-06-08 at 10:03 += 0200, Mario Marietto wrote:
> --> Yes, the required patch is present in 14.4 as well.
>
> Can you point me to the required patche that you are talking about ? >
> thanks.
>
>

https://github.com/freebsd/freebsd-
src/commit/effcd0ded0ef1c92bef29c1e9bbf517c97bb45b8


--
Best regards,
Corvin


--
Ma= rio.
--000000000000d751980653cc6a58--