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Re: [Xen-devel] [PATCH] x86/HVM: don't retain emulated insn cache when exiting back to guest



On 06/12/17 13:04, Julien Grall wrote:
> Hi Jan,
>
> On 12/06/2017 12:58 PM, Jan Beulich wrote:
>>>>> On 06.12.17 at 12:47, <julien.grall@xxxxxxxxxx> wrote:
>>> On 12/06/2017 11:45 AM, Jan Beulich wrote:
>>>>>>> On 06.12.17 at 10:47, <julien.grall@xxxxxxxxxx> wrote:
>>>>> I guess I have been CCed because you would like this patch is
>>>>> fixing the
>>>>> regression you mentioned on IRC?
>>>>
>>>> Yes, but first of all we need to see whether the issue goes away in
>>>> master once the patch is in.
>>>
>>> Would reverting the offending patch in Xen 4.10 be solution?
>>
>> Probably yes, at the price of re-introducing the issue that change
>> did fix. But reverting wouldn't feel right: The change, after all,
>> was not buggy - it merely uncovered the other issue, as far as we
>> can tell.
>
> I understand. I have seen you pushed the fixes in master today. Let
> see how it perform and decide tomorrow what to do.

XenServer testing has identified this bug, and shown the bug to be fixed
with this patch in place.

Therefore, a retroactive Tested-by: Andrew Cooper
<andrew.cooper3@xxxxxxxxxx>

No other emulation issues seen running windows on this particular piece
of old AMD hardware.

~Andrew

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