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Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the ho
From: |
Peter Maydell |
Subject: |
Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it |
Date: |
Fri, 5 Oct 2012 09:15:42 +0100 |
On 5 October 2012 03:24, Alexander Graf <address@hidden> wrote:
> On 05.10.2012, at 04:17, Anthony Liguori wrote:
>> Alexander Graf <address@hidden> writes:
>>> We get similar problems on PPC. Take the following example:
>>>
>>> $ qemu-system-ppc -M mpc8544ds -kernel uImage -nographic
>>
>> But do you really expect people to do this? I have to believe that
>> people running on PPC hardware and running qemu-system-ppc most likely
>> want to do KVM...
>
> Sure. But we wouldn't be able to even tell them what went wrong,
> as we don't have a negotiation mechanism right now that could tell
> user space "hey, the CPU you selected is unknown to me".
On ARM we will at least be able to say what happened, because
our kvm_arch_init_vcpu() will fail (when we try the ioctl to
tell the kernel "be this kind of CPU") and we can print a
message there. However QEMU as a whole doesn't have any way of
falling back to TCG at that point so it just bails out.
-- PMM
- Re: [Qemu-devel] qemu-kvm: remove "boot=on|off" drive parameter compatibility, (continued)
- Re: [Qemu-devel] qemu-kvm: remove "boot=on|off" drive parameter compatibility, Anthony Liguori, 2012/10/01
- [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Jan Kiszka, 2012/10/01
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Anthony Liguori, 2012/10/01
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Aurelien Jarno, 2012/10/01
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Jan Kiszka, 2012/10/03
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Blue Swirl, 2012/10/03
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Peter Maydell, 2012/10/03
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Alexander Graf, 2012/10/04
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Anthony Liguori, 2012/10/04
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Alexander Graf, 2012/10/04
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it,
Peter Maydell <=
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Andreas Färber, 2012/10/08
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Alexander Graf, 2012/10/08
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Andreas Färber, 2012/10/01
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Daniel P. Berrange, 2012/10/01
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Anthony Liguori, 2012/10/01
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Paolo Bonzini, 2012/10/01
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Anthony Liguori, 2012/10/01
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Markus Armbruster, 2012/10/02
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Aurelien Jarno, 2012/10/02
- Re: [Qemu-devel] [PATCH] kvm: Set default accelerator to "kvm" if the host supports it, Michael Tokarev, 2012/10/03