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Re: [Qemu-devel] Re: SVM support in 0.12?
From: |
Jun Koi |
Subject: |
Re: [Qemu-devel] Re: SVM support in 0.12? |
Date: |
Sat, 19 Dec 2009 01:52:01 +0900 |
On Fri, Dec 18, 2009 at 8:35 PM, Alexander Graf <address@hidden> wrote:
>
> Am 18.12.2009 um 03:39 schrieb Jun Koi <address@hidden>
>
>> On Fri, Dec 18, 2009 at 11:37 AM, Jun Koi <address@hidden> wrote:
>>>
>>> Hi,
>>>
>>> I am running latest Qemu 0.12-rc. My guest VM runs Linux kernel 2.6.31.
>>>
>>> Because Qemu now supports SVM, I expect to see the SVM flag in
>>> /proc/cpuinfo, but that is not the case.
>>>
>>> So it seems SVM support is not enabled by default configuration??
>>>
>>
>> My host and guest are both 32 bit Linux, if that matters.
>>
>> (And this is pure Qemu, without using KVM or KQemu)
>
> Kqemu actually works with svm emulation.
>
> Have you tried -cpu qemu32,+svm? I think I only enabled svm on qemu64,
> because I'm not aware of 32-bit AMD CPUs that can do svm.
>
> If you use -cpu qemu32 that also means you'll get an emulated Intel CPU.
> KVM-AMD will refuse there.
>
> Also, back when I developed it, 32-bit kvm didn't really work properly. So
> please let me know what you find out!
I tried the latest Qemu code, with the following command:
qemu -m 500 -cpu qemu32,+svm -cdrom ubuntu.iso
I verified that /proc/cpuinfo has no svm flag. So SVM doesnt work on 32bit host.
I will try that with 64bit host to see how it goes.
Thanks,
Jun
[Qemu-devel] Re: SVM support in 0.12?, Paolo Bonzini, 2009/12/18