Re: [PATCH v2 00/11] KVM in-guest performance monitoring

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On 06/14/2011 02:36 AM, Avi Kivity wrote:
> On 06/13/2011 10:55 PM, David Ahern wrote:
>> On 06/13/2011 07:34 AM, Avi Kivity wrote:
>> >  This patchset exposes an emulated version 1 architectural performance
>> >  monitoring unit to KVM guests.  The PMU is emulated using perf_events,
>> >  so the host kernel can multiplex host-wide, host-user, and the
>> >  guest on available resources.
>>
>> Any particular magic needed to try this patchset?
>>
> 
> You'll need the attached patch, '-cpu host' (or '-cpu host,model=0'
> sometimes), and, as patch 2 is a guest bug fix, you'll need to run the
> patched kernel in the guest as well.
> 

qemu-kvm is not cooperating. git repo as of 05f1737582 with your patch
is aborting:

		Welcome to Fedora
Starting udev: [    4.031626] udev[409]: starting version 161
[    4.831159] piix4_smbus 0000:00:01.3: SMBus Host Controller at
0xb100, revision 0
qemu-kvm: /exports/daahern/qemu-kvm.git/hw/msix.c:616:
msix_unset_mask_notifier: Assertion `dev->msix_mask_notifier' failed.

David
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