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