Re: linux-aio usable?

Avi Kivity
2010-03-09T09:08:39Z

On 03/08/2010 10:19 PM, Michael Tokarev wrote:
> Michael Tokarev wrote:
> []
>
>> Apparently that does not quite work. I just re-compiled kvm with
>> --enable-linux-aio (actually I just installed libaio-dev on debian
>> and qemu-kvm's configure picked it up automatically), and tried
>> a guest. But any I/O fails.
>>
> It has nothing to do with kvm. It is compat_ioctl32 in the kernel
> wrt aio calls. Historically I've a 64bit kernel with 32bit userland,
> and tried 32bit kvm too, and that does not work. But 64bit kvm works
> just fine with aio, and the performance numbers are indeed better.
>
>

Can you elaborate? This sounds like a bug that wants to be fixed.

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