From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:470:142:3::10]:59398) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hdY2h-0001zE-3E for guix-patches@gnu.org; Wed, 19 Jun 2019 06:42:16 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hdY2Y-000431-Jo for guix-patches@gnu.org; Wed, 19 Jun 2019 06:42:08 -0400 Received: from debbugs.gnu.org ([209.51.188.43]:60764) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hdY2U-0003ya-VC for guix-patches@gnu.org; Wed, 19 Jun 2019 06:42:04 -0400 Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1hdY2U-0005Q9-Ok for guix-patches@gnu.org; Wed, 19 Jun 2019 06:42:02 -0400 Subject: [bug#36277] [PATCH] doc: Recommend '-enable-kvm' for installing in a VM as well. Resent-Message-ID: Date: Wed, 19 Jun 2019 12:41:37 +0200 From: "pelzflorian (Florian Pelz)" Message-ID: <20190619104137.r5jzmzqdjd6kdyn4@pelzflorian.localdomain> References: <20190618111633.ixzvf6iatssemtrb@pelzflorian.localdomain> <87wohip8cw.fsf@riseup.net> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="wbwwuaqnhww6h5hj" Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <87wohip8cw.fsf@riseup.net> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-patches-bounces+kyle=kyleam.com@gnu.org Sender: "Guix-patches" To: Meiyo Peng Cc: 36277@debbugs.gnu.org --wbwwuaqnhww6h5hj Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit On Wed, Jun 19, 2019 at 11:22:23AM +0800, Meiyo Peng wrote: > Hi Florian, > > Florian Pelz writes: > > > @example > > -qemu-system-x86_64 -m 1024 -smp 1 \ > > +qemu-system-x86_64 -m 1024 -smp 1 -enable-kvm \ > ... > > -The ordering of the drives matters. > > +The ordering of the drives matters. @code{-enable-kvm} is optional, but > > +significantly improves performance, @pxref{Running Guix in a VM}. > > "-enable-kvm" is deprecated. Please use "-accel kvm" instead. QEMU > will probably support "-enable-kvm" option forever but "-accel kvm" is > recommended. > > > Thank you Meiyo Peng! I cannot find an official deprecation, but -accel seems to be recommended in general. But I am unsure. I like -accel; it seems less KVM-specific, that is better. However, I cannot find -accel kvm in Debian Jessie’s manpage at https://manpages.debian.org/jessie/qemu-system-x86/qemu-system-x86_64.1.en.html and in a Debian Stretch VM it says: qemu-syems-x86_64: -accel: invalid option Maybe it is better to wait three more years until switching to -accel so instructions work on Debian (LTS)? If Guix wants to switch now though, see the attached patches. Regards, Florian --wbwwuaqnhww6h5hj Content-Type: text/plain; charset=us-ascii Content-Disposition: attachment; filename="0001-Recommend-accel-kvm-instead-of-enable-kvm-option-for.patch" >From 0ffc2d9d31f481cccb5d6a8a5e17a6d836d0e09c Mon Sep 17 00:00:00 2001 From: Florian Pelz Date: Wed, 19 Jun 2019 11:19:09 +0200 Subject: [PATCH 1/2] Recommend '-accel kvm' instead of '-enable-kvm' option for QEMU in manual. Suggested by Meiyo Peng . * doc/guix.texi (Running Guix in a Virtual Machine): Change it. --- doc/guix.texi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/doc/guix.texi b/doc/guix.texi index 65c3b8a7f1..97620eb20c 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -25406,7 +25406,7 @@ vm-image} on x86_64 hardware: @example $ qemu-system-x86_64 \ -net user -net nic,model=virtio \ - -enable-kvm -m 512 \ + -accel kvm -m 512 \ -device virtio-blk,drive=myhd \ -drive if=none,file=/tmp/qemu-image,id=myhd @end example @@ -25429,7 +25429,7 @@ create a NIC, the boot will fail. Assuming your hardware platform is x86_64, you can get a list of available NIC models by running @command{qemu-system-x86_64 -net nic,model=help}. -@item -enable-kvm +@item -accel kvm If your system has hardware virtualization extensions, enabling the virtual machine support (KVM) of the Linux kernel will make things run faster. -- 2.22.0 --wbwwuaqnhww6h5hj Content-Type: text/plain; charset=us-ascii Content-Disposition: attachment; filename="0002-doc-Recommend-accel-kvm-for-installing-in-a-VM-as-we.patch" >From c3c6bc15e3052a92acf9bdb3f5156fe939d14c33 Mon Sep 17 00:00:00 2001 From: Florian Pelz Date: Wed, 19 Jun 2019 11:24:16 +0200 Subject: [PATCH 2/2] doc: Recommend '-accel kvm' for installing in a VM as well. * doc (Installing Guix in a VM): Add '-accel kvm' to example. --- doc/guix.texi | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/doc/guix.texi b/doc/guix.texi index 97620eb20c..3fec743d23 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -2430,13 +2430,14 @@ The resulting file will be much smaller than 50 GB (typically less than Boot the USB installation image in an VM: @example -qemu-system-x86_64 -m 1024 -smp 1 \ +qemu-system-x86_64 -m 1024 -smp 1 -accel kvm \ -net user -net nic,model=virtio -boot menu=on \ -drive file=guix-system-install-@value{VERSION}.@var{system}.iso \ -drive file=guixsd.img @end example -The ordering of the drives matters. +The ordering of the drives matters. @code{-accel kvm} is optional, but +significantly improves performance, @pxref{Running Guix in a VM}. In the VM console, quickly press the @kbd{F12} key to enter the boot menu. Then press the @kbd{2} key and the @kbd{RET} key to validate your -- 2.22.0 --wbwwuaqnhww6h5hj--