RE: VT-d regression issue

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Alex Williamson wrote:
> On Sat, 2010-07-31 at 16:33 +0800, Hao, Xudong wrote:
>> Alex Williamson wrote:
>>> On Thu, 2010-07-22 at 16:03 +0300, Gleb Natapov wrote:
>>>> On Thu, Jul 22, 2010 at 08:32:31PM +0800, Hao, Xudong wrote:
>>>>> Well, this patch works fine for me.
>>>>> 
>>>> Looks like userspace problem then. Userspace relied on something
>>>> that was not guarantied by the kernel (access to read only page
>>>> forwarded to userspace as MMOI).
>>> 
>>> I just submitted a set of patches that should fix this using the
>>> slow mapping path for option ROMs.  Thanks,
>>> 
>> 
>> Alex, I saw your "PCI option ROM fixes" patches in kvm. Does
>> qemu-kvm have corresponding fix for this issue either? 
> 
> kvm userspace and qemu-kvm are the same thing.  Device assignment
> currently only lives in the kvm userspace, it it not merged into
> upstream qemu.  Thanks,
> 
> Alex

Ok, I got it, your patch is for userspace. Thanks,

Xudong--
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