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[Qemu-devel] Re: [PATCH] qemu-kvm: Switch to upstream -enable-kvm semant
From: |
Markus Armbruster |
Subject: |
[Qemu-devel] Re: [PATCH] qemu-kvm: Switch to upstream -enable-kvm semantics |
Date: |
Tue, 21 Dec 2010 17:07:28 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux) |
"Richard W.M. Jones" <address@hidden> writes:
> On Tue, Dec 21, 2010 at 04:41:03PM +0100, Markus Armbruster wrote:
>> Like this?
>>
>> upstream qemu | default |-enable-kvm
>> ----------------+-----------+-----------
>> KVM available | disabled | enabled
>> KVM unavailable | disabled | fail
>>
>> qemu-kvm | default |-enable-kvm| -no-kvm
>> ----------------+-----------+-----------+-----------
>> KVM available | enabled* | enabled | disabled
>> KVM unavailable | disabled | fail | disabled
>>
>> * differs from upstream
>
> libguestfs wants "best effort" behaviour, and libvirt wants "KVM or die"
> behaviour.
For what it's worth, default gives you exactly that with qemu-kvm.
Maybe that's good enough, on the theory that if you have KVM, you most
likely have libguestfs using qemu-kvm.
> Avi, can you comment on whether just opening /dev/kvm O_RDWR is a
> reasonable way to detect if KVM is available?
>
> Markus, any idea when we might get the -accel option appearing in
> released versions of qemu/KVM?
No idea. Anthony?
- [Qemu-devel] Re: [PATCH] qemu-kvm: Switch to upstream -enable-kvm semantics, Anthony Liguori, 2010/12/15
- [Qemu-devel] Re: [PATCH] qemu-kvm: Switch to upstream -enable-kvm semantics, Markus Armbruster, 2010/12/15
- [Qemu-devel] Re: [PATCH] qemu-kvm: Switch to upstream -enable-kvm semantics, Avi Kivity, 2010/12/21
- [Qemu-devel] Re: [PATCH] qemu-kvm: Switch to upstream -enable-kvm semantics, Richard W.M. Jones, 2010/12/21
- [Qemu-devel] Re: [PATCH] qemu-kvm: Switch to upstream -enable-kvm semantics, Richard W.M. Jones, 2010/12/21
- [Qemu-devel] Re: [PATCH] qemu-kvm: Switch to upstream -enable-kvm semantics,
Markus Armbruster <=
- Re: [Qemu-devel] Re: [PATCH] qemu-kvm: Switch to upstream -enable-kvm semantics, Anthony Liguori, 2010/12/21
- Re: [Qemu-devel] Re: [PATCH] qemu-kvm: Switch to upstream -enable-kvm semantics, Alexander Graf, 2010/12/21