[Xen-devel] Re: performance regression from c/s 21647:cfba1560054a

[Gianluca Guida <glguida@xxxxxxxxx>]

On Thu, Nov 10, 2011 at 6:59 AM, Stefano Stabellini
<stefano.stabellini@xxxxxxxxxxxxx> wrote:
> On Thu, 10 Nov 2011, Jan Beulich wrote:
>> It's SLE11 SP1 guests that suffered a regression after a maintenance
>> update (originally shipped with 4.0.0, while that patch got backported
>> later into 4.0.x).
>
> Is SLES11 SP1 using HVMOP_pagetable_dying (see
> arch/x86/xen/mmu.c:xen_hvm_init_mmu_ops)?

Good question. In case it does not, just changing the ">l1" check to
work only in case we used the hypercall might do the trick.

Gianluca

-- 
It was a type of people I did not know, I found them very strange and
they did not inspire confidence at all. Later I learned that I had been
introduced to electronic engineers.
                                                  E. W. Dijkstra

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