Re: [PATCH] KVM: PPC: emulate dcbst

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On 04/09/2013 10:20:41 PM, Yoder Stuart-B08248 wrote:
> -----Original Message-----
> From: Yoder Stuart-B08248
> Sent: Tuesday, April 09, 2013 3:36 PM
> To: agraf@xxxxxxx
> Cc: kvm-ppc@xxxxxxxxxxxxxxx; kvm@xxxxxxxxxxxxxxx; Yoder Stuart-B08248
> Subject: [PATCH] KVM: PPC: emulate dcbst
>
> From: Stuart Yoder <stuart.yoder@xxxxxxxxxxxxx>
>
> Signed-off-by: Stuart Yoder <stuart.yoder@xxxxxxxxxxxxx>
> ---

One thing I should have mentioned...without this patch
on the host 64-bit guest kernels are currently broken
when using -smp.  Not sure how far back things are broken,
the oldest kernel I had a chance to try was like 3.8-rc3.

It's due to dcbst being used on the spin table, which is treated as emulated MMIO under QEMU.

-Scott
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