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Re: [Qemu-devel] [PATCH] limit guest cpus for kvm enabled builds

From: Bruce Rogers
Subject: Re: [Qemu-devel] [PATCH] limit guest cpus for kvm enabled builds
Date: Thu, 09 Apr 2009 11:27:32 -0600

 On 4/9/2009 at 10:44 AM, Anthony Liguori <address@hidden> wrote:
> Paul Brook wrote:
>> On Thursday 09 April 2009, Bruce Rogers wrote:
>>> The x86 kvm kernel module limits guest cpu count to 16, but the userspace
>>> pc definition says 255 still.  When invoking qemu-kvm with -smp > 16, it
>>> prints some error messages, then segfaults.   One of the mistakes is that
>>> the error code from kvm_create_vcpu is ignored in ap_main_loop. 
>> You should fix that bug then.
> I don't see the patch on the mailing list yet, but I'm pretty sure your 
> patch is against kvm-userspace.git as ap_main_loop doesn't exist in 
> upstream QEMU.
> And FWIW, we do properly handle an unsupported -smp value in upstream 
> QEMU when using KVM.
> Regards,
> Anthony Liguori

OK thanks.
I've submitted a different patch on kvm mailing list.
- Bruce

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