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RE: [Xen-devel] [PATCH][VTD] fixed a timing issue on DELL calpella lapto

To: Jean Guyader <jean.guyader@xxxxxxxxx>
Subject: RE: [Xen-devel] [PATCH][VTD] fixed a timing issue on DELL calpella laptop while doing graphics pass-through
From: "Kay, Allen M" <allen.m.kay@xxxxxxxxx>
Date: Fri, 4 Jun 2010 06:30:20 -0700
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Thread-topic: [Xen-devel] [PATCH][VTD] fixed a timing issue on DELL calpella laptop while doing graphics pass-through
That's a more robust fix.  Thanks.

Allen

-----Original Message-----
From: Jean Guyader [mailto:jean.guyader@xxxxxxxxx] 
Sent: Friday, June 04, 2010 1:54 AM
To: Kay, Allen M
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx; ian.pratt@xxxxxxxxxxxxx; Han, Weidong; 
Ross.Philipson@xxxxxxxxxx; jean.guyader@xxxxxxxxxx
Subject: Re: [Xen-devel] [PATCH][VTD] fixed a timing issue on DELL calpella 
laptop while doing graphics pass-through

On 4 June 2010 01:22, Kay, Allen M <allen.m.kay@xxxxxxxxx> wrote:
> Added additional sleep time between FLR and PCI config restore.
>
>
>
> Signed-off-by: Allen Kay <allen.m.kay@xxxxxxxxx>
>

Yes, to take more time to do an FLR on those platform, but I don't think
this is a proper fix. The fix we have for that in our tree (XCI) is to make
sure the value we write when we restore the pci config space stick in
pciback.

I'll send the patch later today,
Jean

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