From owner-freebsd-virtualization@freebsd.org Sun Sep 6 17:36:41 2015 Return-Path: Delivered-To: freebsd-virtualization@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 6A0279CB4C3 for ; Sun, 6 Sep 2015 17:36:41 +0000 (UTC) (envelope-from eiselekd@gmail.com) Received: from mail-la0-x233.google.com (mail-la0-x233.google.com [IPv6:2a00:1450:4010:c03::233]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id CE00F1929 for ; Sun, 6 Sep 2015 17:36:40 +0000 (UTC) (envelope-from eiselekd@gmail.com) Received: by lamp12 with SMTP id p12so38993491lam.0 for ; Sun, 06 Sep 2015 10:36:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=E8x3/67qETj6dY2yYc1rI0yHMEr88w3mA2p/yYSwPiU=; b=i+OYHaUB/juNZCrBew3DYVPsN+sgGAv+6lg/jXK+AHq4jFG6tprUx9RQf/pDLCEYCU NNWFUap4VtItM6H4pERVAaUcp2GqEI2x/Ktc6rZV3zUVvizFwZL4Y4rsG/AD4VzlcUZ9 sNsnkq0jDFHCzgUTTpiusR6K05GGSJAF2KPWuxUo21/25IBCStoUlpMdo1Wp2oRUqn+u XJ9PH6Jucs+AKCnGXrj3FMF+0YR+YjDdFHIc8ATBau3czdw17Q5quCoHclZtLcOYUovK w2pRQVjO8Dh0NgsvOm+1gjZrWIUmojyypy57UD3UYgNgbBpEIChoTIDx3K+veRWyIWMu kPjg== MIME-Version: 1.0 X-Received: by 10.153.7.172 with SMTP id dd12mr13493447lad.25.1441560998678; Sun, 06 Sep 2015 10:36:38 -0700 (PDT) Received: by 10.112.38.11 with HTTP; Sun, 6 Sep 2015 10:36:38 -0700 (PDT) In-Reply-To: References: Date: Sun, 6 Sep 2015 19:36:38 +0200 Message-ID: Subject: Re: Windows-10 in Virtualbox install From: Konrad Eisele To: freebsd-virtualization@freebsd.org Content-Type: multipart/mixed; boundary=001a11348a4c3fc7b3051f1793ce X-Content-Filtered-By: Mailman/MimeDel 2.1.20 X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 06 Sep 2015 17:36:41 -0000 --001a11348a4c3fc7b3051f1793ce Content-Type: text/plain; charset=UTF-8 I took my HD from a Lenovo T430s (Intel) and switched to a AMD desktop: hw.model: AMD FX(tm)-8350 Eight-Core Processor Now with vbox svn source r57571, appended patch and gcc 4.8.5 I can compile and run vbox in Freebsd 10.2. I can run Windows-10 now. Before the CD install was hanging in the early boot stage, with AMD it is working smoothly. What can be the problem? Is there special Bios requirements T430s? I enabled Intel Vt-x there... // Greetings Konrad 2015-09-03 22:15 GMT+02:00 Konrad Eisele : > Hello, I tried to install Windows-10 in Virtualbox 4.3.30 on Freebsd 10.2. > It starts up and shows the blue 4 tile logo, but then it doesnt continue. > Normally it should show the circle with the dots spinning round, however > Virtualbox loops at 100%. > I then compiled Virtualbox 5.0 on FreeBsd (with some patching) and > got Virtualbox-5.0 to start, however the behaviour is almost the same > only that it loops at ~50% now. (I guess that Windows 8.1 will be the > same). > Windows-7 starts up ok. > I'm not so familiar with Virtualization and wonder weather someone > knows what is missing in the FreeBsd driver so that Windows 10 cannot > start up. Does anyone know what magic Windows does in the beginning? > It does something that is emulated in Linux or OSX. Here Windows 10 > boots. > On FreeBsd, when loading a Windows-10 VBox image created in Linux it starts > and hangs like when installing from CD, however when restarting the > machine, > next time it writes "trying automatic recovery", so it has recorded that > it has started once. Then it hangs again. > I know Bootloader stuff is lowlevel and esoteric and I guess I cannot > fix this myself, but maybe someone can give me a hint where to look > maybe point to the patch that did the trick in the linux driver :-) > // Greetings Konrad > > > > --001a11348a4c3fc7b3051f1793ce Content-Type: text/plain; charset=US-ASCII; name="vbox.diff" Content-Disposition: attachment; filename="vbox.diff" Content-Transfer-Encoding: base64 X-Attachment-Id: f_ie8s72ru0 SW5kZXg6IENvbmZpZy5rbWsKPT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PQotLS0gQ29uZmlnLmttawkocmV2aXNpb24gNTc1 NzEpCisrKyBDb25maWcua21rCSh3b3JraW5nIGNvcHkpCkBAIC0zODMxLDcgKzM4MzEsNyBAQAog CS1tbm8tM2Rub3cgLW1zb2Z0LWZsb2F0IC1mbm8tYXN5bmNocm9ub3VzLXVud2luZC10YWJsZXMg LVd1bmRlZgogVEVNUExBVEVfVkJPWFIwRFJWX0NYWEZMQUdTICAgICAgICAgICAgPSAtZm5vLWV4 Y2VwdGlvbnMgLWZuby1ydHRpIFwKIAkkKFZCT1hfR0NDX1dBUk4pIC1XcG9pbnRlci1hcml0aCAt 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bugzilla-noreply@FreeBSD.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id t86L0T3v000593 for ; Sun, 6 Sep 2015 21:00:29 GMT (envelope-from bugzilla-noreply@FreeBSD.org) Message-Id: <201509062100.t86L0T3v000593@kenobi.freebsd.org> From: bugzilla-noreply@FreeBSD.org To: freebsd-virtualization@FreeBSD.org Subject: Problem reports for freebsd-virtualization@FreeBSD.org that need special attention X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 Date: Sun, 06 Sep 2015 21:00:29 +0000 Content-Type: text/plain; charset="UTF-8" X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 06 Sep 2015 21:00:29 -0000 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 ------------+-----------+--------------------------------------------------- In Progress | 202321 | [bhyve,patch] More verbose error reporting in bhy New | 202322 | [bhyve,patch] add option to have bhyve write its 2 problems total for which you should take action. From owner-freebsd-virtualization@freebsd.org Mon Sep 7 12:42:10 2015 Return-Path: Delivered-To: freebsd-virtualization@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id A519C9CCF8D for ; Mon, 7 Sep 2015 12:42:10 +0000 (UTC) (envelope-from samflanker@gmail.com) Received: from mail-wi0-x22e.google.com (mail-wi0-x22e.google.com [IPv6:2a00:1450:400c:c05::22e]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 498821ED6 for ; Mon, 7 Sep 2015 12:42:10 +0000 (UTC) (envelope-from samflanker@gmail.com) Received: by wiclk2 with SMTP id lk2so82949101wic.1 for ; Mon, 07 Sep 2015 05:42:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=9zVGKtTAzVzpX77ySsmXP13tJlFPqpGHXfkQ9hHyOUo=; b=jpajE+UysQaEVv9LSJlT0f7bSqfgIz7owmj0Ubzqa6E7IwJ7CQcZmYlVtgd4EpPNxl rNSrtAjuzVtRuZ+dTRWoUSho1UEP9sqRaJJhA7vpzVfTAItt8/+PreGcTsmyuu1RBQ05 f58ZLmFxBrURLNqXcvL61vlVb42kfHO/pn2VYVc1ct6etLtAzFCG8HX1ZHYgD7hEauD1 HVRwkaW2kqdNIY1Kp3kHj/HiP1RGPszUsB4iT+zf890MjjY2WBwR3Gso1/6GLkgnxaN0 C2RulTRIZ75x8lzDwq0e2nRSWmZASx9QO2XujJwpYbZNjFOAc1krx/uSuJ2LFPWTO+Xj Zicw== MIME-Version: 1.0 X-Received: by 10.194.92.166 with SMTP id cn6mr35581139wjb.6.1441629728594; Mon, 07 Sep 2015 05:42:08 -0700 (PDT) Received: by 10.28.211.81 with HTTP; Mon, 7 Sep 2015 05:42:08 -0700 (PDT) Date: Mon, 7 Sep 2015 15:42:08 +0300 Message-ID: Subject: [bhyve] clock problem From: Vladimir Laskov To: freebsd-virtualization@freebsd.org Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.20 X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Sep 2015 12:42:10 -0000 I have a problem with Linux guest on BHyve host. Guest use io driver virtio-blk. ************************************************************************************** # lsb_release -a No LSB modules are available. Distributor ID: Debian Description: Debian GNU/Linux 7.8 (wheezy) Release: 7.8 Codename: wheezy # uname -a Linux 3.2.0-4-amd64 #1 SMP Debian 3.2.68-1+deb7u2 x86_64 GNU/Linux # tail /var/log/kern.log Sep 6 22:06:59 kernel: [110375.060025] hrtimer: interrupt took 295444 ns # tail /var/log/ntpd.log 5 Sep 04:00:53 ntpd[8041]: frequency error -589 PPM exceeds tolerance 500 PPM 6 Sep 07:27:46 ntpd[5723]: 0.0.0.0 c016 06 restart 6 Sep 07:27:46 ntpd[5723]: 0.0.0.0 c012 02 freq_set ntpd -500.000 PPM 6 Sep 07:27:53 ntpd[5723]: 0.0.0.0 c615 05 clock_sync 6 Sep 07:50:01 ntpd[5723]: frequency error -500 PPM exceeds tolerance 500 PPM # cat /var/lib/ntp/ntp.drift -500.000 # cat /sys/devices/system/clocksource/clocksource0/current_clocksource tsc ************************************************************************************** on host # sysctl kern.timecounter.hardware kern.timecounter.hardware: TSC-low # ntpdate -q pool.ntp.org server 46.254.216.12, stratum 2, offset 0.023543, delay 0.02783 server 31.135.95.60, stratum 2, offset 0.023552, delay 0.02791 server 85.21.78.23, stratum 2, offset 0.045319, delay 0.07175 server 93.180.54.115, stratum 2, offset 0.022923, delay 0.02832 7 Sep 15:27:43 ntpdate[10554]: adjust time server 46.254.216.12 offset 0.023543 sec # cat /var/db/ntpd.drift 0.932 ************************************************************************************** please help -- Vladimir Laskov From owner-freebsd-virtualization@freebsd.org Mon Sep 7 16:32:18 2015 Return-Path: Delivered-To: freebsd-virtualization@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 461669CCB0C for ; Mon, 7 Sep 2015 16:32:18 +0000 (UTC) (envelope-from allanjude@freebsd.org) Received: from mx1.scaleengine.net (mx1.scaleengine.net [209.51.186.6]) by mx1.freebsd.org (Postfix) with ESMTP id 0A4951E38 for ; Mon, 7 Sep 2015 16:32:17 +0000 (UTC) (envelope-from allanjude@freebsd.org) Received: from [10.1.1.2] (unknown [10.1.1.2]) (Authenticated sender: allanjude.freebsd@scaleengine.com) by mx1.scaleengine.net (Postfix) with ESMTPSA id 681CA9A26 for ; Mon, 7 Sep 2015 16:32:11 +0000 (UTC) Subject: Re: [bhyve] clock problem To: freebsd-virtualization@freebsd.org References: From: Allan Jude Message-ID: <55EDBC44.1050908@freebsd.org> Date: Mon, 7 Sep 2015 12:33:08 -0400 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="lbBRpMXSlO7XUBkLeonln1eT2sFkwR7PT" X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Sep 2015 16:32:18 -0000 This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --lbBRpMXSlO7XUBkLeonln1eT2sFkwR7PT Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable On 2015-09-07 08:42, Vladimir Laskov wrote: > I have a problem with Linux guest on BHyve host. Guest use io > driver virtio-blk. >=20 >=20 > ***********************************************************************= *************** > # lsb_release -a > No LSB modules are available. > Distributor ID: Debian > Description: Debian GNU/Linux 7.8 (wheezy) > Release: 7.8 > Codename: wheezy >=20 > # uname -a > Linux 3.2.0-4-amd64 #1 SMP Debian 3.2.68-1+deb7u2 x86_64 GNU/Linux >=20 > # tail /var/log/kern.log > Sep 6 22:06:59 kernel: [110375.060025] hrtimer: interrupt took 295444= ns >=20 > # tail /var/log/ntpd.log > 5 Sep 04:00:53 ntpd[8041]: frequency error -589 PPM exceeds tolerance = 500 > PPM >=20 > 6 Sep 07:27:46 ntpd[5723]: 0.0.0.0 c016 06 restart > 6 Sep 07:27:46 ntpd[5723]: 0.0.0.0 c012 02 freq_set ntpd -500.000 PPM > 6 Sep 07:27:53 ntpd[5723]: 0.0.0.0 c615 05 clock_sync > 6 Sep 07:50:01 ntpd[5723]: frequency error -500 PPM exceeds tolerance = 500 > PPM >=20 >=20 > # cat /var/lib/ntp/ntp.drift > -500.000 >=20 > # cat /sys/devices/system/clocksource/clocksource0/current_clocksource > tsc > ***********************************************************************= *************** > on host >=20 > # sysctl kern.timecounter.hardware > kern.timecounter.hardware: TSC-low >=20 > # ntpdate -q pool.ntp.org > server 46.254.216.12, stratum 2, offset 0.023543, delay 0.02783 > server 31.135.95.60, stratum 2, offset 0.023552, delay 0.02791 > server 85.21.78.23, stratum 2, offset 0.045319, delay 0.07175 > server 93.180.54.115, stratum 2, offset 0.022923, delay 0.02832 > 7 Sep 15:27:43 ntpdate[10554]: adjust time server 46.254.216.12 offset= > 0.023543 sec >=20 > # cat /var/db/ntpd.drift > 0.932 > ***********************************************************************= *************** >=20 >=20 > please help >=20 >=20 > -- > Vladimir Laskov > _______________________________________________ > freebsd-virtualization@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-virtualization > To unsubscribe, send any mail to "freebsd-virtualization-unsubscribe@fr= eebsd.org" >=20 What are your available options on the host hardware? sysctl kern.timecounter.choice Have you tried experimenting? --=20 Allan Jude --lbBRpMXSlO7XUBkLeonln1eT2sFkwR7PT Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (MingW32) iQIcBAEBAgAGBQJV7bxPAAoJEBmVNT4SmAt+usoP/03BLnN6Z7FfHo1XwZCOSgqD y3tRwOPoypCVTn3QdTfUYrAYyOmdWI9p5EO7rJOZKWEa0q2WAe4CEv5WRll9M8Ea rsnTPGL4fQfFIJe9RVHPWc/FJmb1unIBSEgYyJFc75BcjleyQ19+EIsI/kJy4rue DyfpQ+oVuMqpSgW+oyqBvR2nR20Fe54sUjEpOXVcrA3azNtz0vBlwRToB8dDPP4u 8zhd1H38OlS5iVKzqgePlR4fgV6jqT9K2h+JlsuNbru5at38Gjiv4zFMIcA2H5aq W5N5UmJun6dQxTVB4XKp70Bh8ttpqZzv6ToBdpHxXb5Vy1C+wGDmlLd1TyQiqf76 jyNobMfAev3EoKR/yN5062oZgGe9YRn2GuMthJAKm8RhszWXZYFSipRFHwCKFdmL bU7eG0jP4d0GkN6GTb0VZOMAN4lTpMQF9xvOn+TXuM0TPdeMwzxlksZeECmydZ0J vlbwegurZZx2E9fHFOuu1TkO6OxsiSYNufdapWwHB06wAfLIc+4JBfW8GS1afvHM y5le01VGjl0mnGXROMcCsIZ9RePBxWnlLpLHG5PAKI261mBD0aDK+Ye28lCWeL7P RPGIEAugw6Ks31LNkJ9y+C1OY09JDSsQWzN1IAPMXNMEJbt/9HjJdo2GLKx/UOx7 GLat6sLVeRUqk6MgZe+G =+NDK -----END PGP SIGNATURE----- --lbBRpMXSlO7XUBkLeonln1eT2sFkwR7PT-- From owner-freebsd-virtualization@freebsd.org Tue Sep 8 14:06:51 2015 Return-Path: Delivered-To: freebsd-virtualization@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 3396BA00D4C for ; Tue, 8 Sep 2015 14:06:51 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 1FEA6152A for ; Tue, 8 Sep 2015 14:06:51 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id t88E6olJ045190 for ; Tue, 8 Sep 2015 14:06:50 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-virtualization@FreeBSD.org Subject: [Bug 198344] [virtio] virtio-balloon does not work Date: Tue, 08 Sep 2015 14:06:50 +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: 10.1-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: vivek@khera.org X-Bugzilla-Status: Open X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-virtualization@FreeBSD.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Sep 2015 14:06:51 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=198344 Vick Khera changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |vivek@khera.org --- Comment #3 from Vick Khera --- I observe this as well (FreeBSD 10.2), except the freebsd guest does not allocate all the allowed memory at start; it will grow up to the max memory then never shrink. Linux VM's shrink to allow better utilization of the host RAM. -- You are receiving this mail because: You are the assignee for the bug. From owner-freebsd-virtualization@freebsd.org Thu Sep 10 00:02:00 2015 Return-Path: Delivered-To: freebsd-virtualization@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id C941B9CD50F for ; Thu, 10 Sep 2015 00:02:00 +0000 (UTC) (envelope-from john@baldwin.cx) Received: from bigwig.baldwin.cx (bigwig.baldwin.cx [IPv6:2001:470:1f11:75::1]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id A69C3102F for ; Thu, 10 Sep 2015 00:02:00 +0000 (UTC) (envelope-from john@baldwin.cx) Received: from ralph.baldwin.cx (c-73-231-226-104.hsd1.ca.comcast.net [73.231.226.104]) by bigwig.baldwin.cx (Postfix) with ESMTPSA id B462EB939; Wed, 9 Sep 2015 20:01:59 -0400 (EDT) From: John Baldwin To: freebsd-virtualization@freebsd.org Cc: Stefan Andritoiu Subject: Re: What is the sequence of context switches when an IPI is received? Date: Wed, 09 Sep 2015 16:57:35 -0700 Message-ID: <2128444.4xLqUoZl3s@ralph.baldwin.cx> User-Agent: KMail/4.14.3 (FreeBSD/10.2-PRERELEASE; KDE/4.14.3; amd64; ; ) In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.7 (bigwig.baldwin.cx); Wed, 09 Sep 2015 20:01:59 -0400 (EDT) X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Sep 2015 00:02:00 -0000 On Thursday, June 11, 2015 04:50:52 PM Stefan Andritoiu wrote: > Hello, > > From the FreeBSD Handbook: "FreeBSD deals with interrupt handlers by > giving them their own thread context". > From my understanding when a IPI is received the thread that will run > it is placed on the real-time runq, and the scheduler will be invoked > to schedule it. > > So the sequence should be: > currently running thread -> scheduler thread -> interrupt handler -> > scheduler thread -> previously interrupted thread (if no thread > priority change took place inside the interrupt handler) > > Is this correct? (Sorry these replies are dated.) IPIs do not run in a dedicated thread. Only device interrupt handlers run in a dedicated thread. IPIs (and some device handlers such as timer interrupts) borrow the stack of the currently executing thread to run their handler. As a result, you should have no context switches when an IPI is received unless the IPI handler specifically invokes one. One IPI that explicitly swithes is IPI_PREEMPT. However, other IPIs can result in a switch if the interrupted thread is running in userland and a context switch to another thread is performed via the checks in userret() and/or ast(). This is how IPI_AST is used. It has a NULL handler and is only sent to trigger the side effects in userret() in case the thread is executing in userland. -- John Baldwin From owner-freebsd-virtualization@freebsd.org Thu Sep 10 00:01:59 2015 Return-Path: Delivered-To: freebsd-virtualization@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id D10E19CD50A for ; Thu, 10 Sep 2015 00:01:59 +0000 (UTC) (envelope-from john@baldwin.cx) Received: from bigwig.baldwin.cx (bigwig.baldwin.cx [IPv6:2001:470:1f11:75::1]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id ADB671029 for ; Thu, 10 Sep 2015 00:01:59 +0000 (UTC) (envelope-from john@baldwin.cx) Received: from ralph.baldwin.cx (c-73-231-226-104.hsd1.ca.comcast.net [73.231.226.104]) by bigwig.baldwin.cx (Postfix) with ESMTPSA id 7E03AB91E; Wed, 9 Sep 2015 20:01:58 -0400 (EDT) From: John Baldwin To: freebsd-virtualization@freebsd.org Cc: Stefan Andritoiu Subject: Re: Are the sched_choose() or tdq_choose() functions called after returning from an interrupt? Date: Wed, 09 Sep 2015 17:00:21 -0700 Message-ID: <9328846.aE9oFjIUoK@ralph.baldwin.cx> User-Agent: KMail/4.14.3 (FreeBSD/10.2-PRERELEASE; KDE/4.14.3; amd64; ; ) In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.7 (bigwig.baldwin.cx); Wed, 09 Sep 2015 20:01:58 -0400 (EDT) X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Sep 2015 00:01:59 -0000 On Friday, June 12, 2015 10:51:20 AM Stefan Andritoiu wrote: > Hello, > > When returning from an interrupt, does it switch directly the thread > that was interrupted? Or is the scheduler called to choose a thread to > run (most probable the thread that was interrupted)? The scheduler is always called to choose. An ithread may have awakened a more important thread than the originally interrupted thread. > More specifically, are the sched_choose() or tdq_choose() functions > called after returning from an IPI? As I said in my previous reply. This is not always true for IPIs. Device interrupt handlers that schedule an ithread will schedule the ithread and possibly preempt to it before returning from the interrupt. Only when the interrupted thread is resumed does it then fully cleanup the interrupted stack and execute iret. > Does an interrupt have it's own thread, or does it run in the context > of the interrupted thread as in Linux? Most device interrupts use a dedicated thread. Some device interrupt handlers do not. A driver can choose to register a non-threaded handler that runs on the stack of the interrupted thread. However, such handlers are limited in what they can do and must often defer work to other threads that they explicitly schedule (such as via a taskqueue). -- John Baldwin From owner-freebsd-virtualization@freebsd.org Sat Sep 12 21:13:49 2015 Return-Path: Delivered-To: freebsd-virtualization@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id B878FA00D13 for ; Sat, 12 Sep 2015 21:13:49 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id A52C91D74 for ; Sat, 12 Sep 2015 21:13:49 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id t8CLDn6V082334 for ; Sat, 12 Sep 2015 21:13:49 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-virtualization@FreeBSD.org Subject: [Bug 198344] [virtio] virtio-balloon does not work Date: Sat, 12 Sep 2015 21:13:49 +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: 10.2-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: Jan.Henke@taujhe.de X-Bugzilla-Status: Open X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-virtualization@FreeBSD.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: version Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 12 Sep 2015 21:13:49 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=198344 Jan Henke changed: What |Removed |Added ---------------------------------------------------------------------------- Version|10.1-RELEASE |10.2-RELEASE --- Comment #4 from Jan Henke --- With 10.2 I see the same behaviour as Vick. The FreeBSD no longer allocates up to the maximum at boot, but it does not release unused memory either. Would be nice to implement full ballooning in FreeBSD. -- You are receiving this mail because: You are the assignee for the bug.