[Xen-devel] RE: [PATCH] [pv-ops] fix dom0 S3 when MSI is used.

["Cui, Dexuan" <dexuan.cui@xxxxxxxxx>]

Jeremy Fitzhardinge wrote:
> On 03/17/2010 01:46 AM, Cui, Dexuan wrote:
>> The old commit a234848f works only when the device supports D3hot;
>> when the device only supports D3cold, the device doesn't work
>> properly after resuming from Dom0 S3. 
>> 
> What branches should I apply this to?  Both 2.6.31 and .32, or just
> .32? 
I think it should be both. :-)

>> A better workaround is invoking the PHYSDEVOP_restore_msi hypercall.
>> The patch reverts the old commit and invokes the hypercall.
>> 
> Is this a new hypercall?
No. The hypercall has been there from changeset 18937: 2dffa6ceb0af, 15 months 
ago. :-)

> 
> Aside from that, it looks fine as a stopgap until we do MSI properly.
Agree.

Thanks,
-- Dexuan
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