[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] cpuid problem in upstream qemu with kvm
From: |
Alexander Graf |
Subject: |
Re: [Qemu-devel] cpuid problem in upstream qemu with kvm |
Date: |
Sun, 20 Dec 2009 18:17:02 +0100 |
On 20.12.2009, at 17:56, Michael S. Tsirkin wrote:
> On Sun, Dec 20, 2009 at 05:59:33PM +0200, Avi Kivity wrote:
>> On 12/20/2009 05:51 PM, Michael S. Tsirkin wrote:
>>>
>>>> Maybe we should make -cpu host the default. That will give the best
>>>> performance for casual users, more testing for newer features, and will
>>>> force management apps to treat migration much more seriously. The
>>>> downside is that casual users upgrading their machines might experience
>>>> issues with Windows. Feature compatibility is not just about migration.
>>>>
>>> This seems very aggressive. Can't we whitelist features that we know
>>> about? Further, doesn't KVM already do this?
>>>
>>>
>>
>> It does, but without -cpuid host you're stuck with qemu64 (kvm.ko
>> doesn't add features userspace didn't request).
>
> Hmm, then, shouldn't either kvm or qemu mask features that we do not
> emulate well enough to make windows not crash?
-cpu host does that already, no?
Alex
- Re: [Qemu-devel] cpuid problem in upstream qemu with kvm, (continued)
- Re: [Qemu-devel] cpuid problem in upstream qemu with kvm, Avi Kivity, 2009/12/20
- Re: [Qemu-devel] cpuid problem in upstream qemu with kvm, Anthony Liguori, 2009/12/20
- Re: [Qemu-devel] cpuid problem in upstream qemu with kvm, Avi Kivity, 2009/12/20
- Re: [Qemu-devel] cpuid problem in upstream qemu with kvm, Gleb Natapov, 2009/12/20
- Re: [Qemu-devel] cpuid problem in upstream qemu with kvm, Avi Kivity, 2009/12/20
- Re: [Qemu-devel] cpuid problem in upstream qemu with kvm, Michael S. Tsirkin, 2009/12/20
- Re: [Qemu-devel] cpuid problem in upstream qemu with kvm, Avi Kivity, 2009/12/20
- Re: [Qemu-devel] cpuid problem in upstream qemu with kvm, Michael S. Tsirkin, 2009/12/20
- Re: [Qemu-devel] cpuid problem in upstream qemu with kvm, Avi Kivity, 2009/12/20
- Re: [Qemu-devel] cpuid problem in upstream qemu with kvm, Michael S. Tsirkin, 2009/12/20
- Re: [Qemu-devel] cpuid problem in upstream qemu with kvm,
Alexander Graf <=
- Re: [Qemu-devel] cpuid problem in upstream qemu with kvm, Michael S. Tsirkin, 2009/12/20
- Re: [Qemu-devel] cpuid problem in upstream qemu with kvm, Alexander Graf, 2009/12/20
- Re: [Qemu-devel] cpuid problem in upstream qemu with kvm, Gleb Natapov, 2009/12/20
- Re: [Qemu-devel] cpuid problem in upstream qemu with kvm, Alexander Graf, 2009/12/20
- Re: [Qemu-devel] cpuid problem in upstream qemu with kvm, Gleb Natapov, 2009/12/20
- Re: [Qemu-devel] cpuid problem in upstream qemu with kvm, Anthony Liguori, 2009/12/20
- Re: [Qemu-devel] cpuid problem in upstream qemu with kvm, Alexander Graf, 2009/12/20
- Re: [Qemu-devel] cpuid problem in upstream qemu with kvm, Gleb Natapov, 2009/12/21
- [Qemu-devel] Re: cpuid problem in upstream qemu with kvm, Paolo Bonzini, 2009/12/21
- Re: [Qemu-devel] cpuid problem in upstream qemu with kvm, Michael S. Tsirkin, 2009/12/20