From: Christopher Allan Webber <cwebber@dustycloud.org>
To: "Ludovic Courtès" <ludo@gnu.org>
Cc: 22633@debbugs.gnu.org
Subject: bug#22633: Provide a kvm-less qemu / guix system vm
Date: Fri, 12 Feb 2016 09:47:44 -0800 [thread overview]
Message-ID: <87ziv595xb.fsf@dustycloud.org> (raw)
In-Reply-To: <87oabm2tfa.fsf@gnu.org>
Ludovic Courtès writes:
> Jookia <166291@gmail.com> skribis:
>
>> We should probably also blacklist kvm on Libreboot machines too somehow,
>
> A simple way to achieve this is with:
>
> (operating-system
> ;; …
> (kernel-arguments '("modprobe.blacklist=kvm-intel,kvm")))
I tried this:
(operating-system
(kernel linux-libre-4.1)
(kernel-arguments '("modprobe.blacklist=kvm-intel,kvm"))
...)
The generated Grub configuration looks right:
menuentry "GNU with Linux-Libre 4.1.17 (alpha)" {
search --label --set guix
linux /gnu/store/k3l4g22vypwniy0k3f8xha9l8p1s716d-linux-libre-4.1.17/bzImage --root=guix --system=/gnu/store/flq2702dmj6ppqc4iix6xgp0q364yl3l-system --load=/gnu/store/flq2702dmj6ppqc4iix6xgp0q364yl3l-system/boot modprobe.blacklist=kvm-intel,kvm
initrd /gnu/store/flq2702dmj6ppqc4iix6xgp0q364yl3l-system/initrd
}
Unfortunately, after rebooting into it:
cwebber@oolong:~$ lsmod | grep kvm
kvm_intel 155648 0
kvm 491520 1 kvm_intel
cwebber@oolong:~$ ls /dev/kvm
/dev/kvm
Not sure why it didn't seem to do anything...
> But I guess ‘guix system vm’ will now fail.
>
> We could change the two occurrences of ‘-enable-kvm’ to use this flag if
> and only if /dev/kvm exists (I think it doesn’t exist when the kvm
> modules are not loaded.)
If we could really get kvm blocked, I could write this patch.
> Thoughts?
>
> Ludo’.
next prev parent reply other threads:[~2016-02-12 17:48 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-11 17:26 bug#22633: Provide a kvm-less qemu / guix system vm Christopher Allan Webber
2016-02-11 22:50 ` Jookia
2016-02-12 0:49 ` Leo Famulari
2016-02-12 18:04 ` Christopher Allan Webber
2016-02-13 0:47 ` Leo Famulari
2016-02-12 9:02 ` Ludovic Courtès
2016-02-12 17:47 ` Christopher Allan Webber [this message]
2016-02-13 19:10 ` Alex Kost
2016-02-21 12:09 ` Ludovic Courtès
2016-02-23 8:08 ` Alex Kost
2016-02-21 12:06 ` Ludovic Courtès
2016-02-22 18:56 ` Christopher Allan Webber
2016-02-22 19:35 ` Christopher Allan Webber
2016-02-22 19:43 ` Jookia
2016-02-22 21:27 ` Christopher Allan Webber
2016-02-22 21:09 ` Ludovic Courtès
2016-02-22 21:30 ` Christopher Allan Webber
2016-02-23 16:13 ` Ludovic Courtès
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