Re: [PATCH v2] qemu-kvm: Remove icache flush from cpu_physical_memory_rw

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On 2012-01-24 01:26, Scott Wood wrote:
> On 01/19/2012 12:04 PM, Jan Kiszka wrote:
>> On 2012-01-19 18:54, Marcelo Tosatti wrote:
>>> On Thu, Jan 19, 2012 at 01:39:24PM +0100, Jan Kiszka wrote:
>>>> This is at best a PPC topi but according to [1] even there unneeded. In
>>>> any case, remove this diff to upstream, it should be handled there if
>>>> actually needed.
>>>
>>> [1] ? 
>>>
>>
>> Oops.
>>
>> --------8<---------
>>
>> This is at best a PPC topi but according to [1] even there unneeded. In
>> any case, remove this diff to upstream, it should be handled there if
>> actually needed.
>>
>> [1] http://thread.gmane.org/gmane.comp.emulators.qemu/119022/focus=119086
> 
> That says that it's unneeded on (some?) IBM Power systems.  We need it
> on Freescale chips.  I submitted an upstream-QEMU patch to do this flush
> (referenced in that thread, still not applied) because I was seeing
> cache problems when loading images.

Then you probably want to limit your patch's effect to that particular
set of chips and repost it to qemu-devel. In any case, it's not a
qemu-kvm topic as we are x86-only for quite a while.

Jan

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