Re: [Xen-devel] Inconsistent MSI flags for pure HVM guest in 4.1.3 with the back-ported 4.2.0 msi_retranslate patch. (Was: Issue about domU missing interrupt)

["G.R." <firemeteor@xxxxxxxxxxxxxxxxxxxxx>]

On Sat, Dec 8, 2012 at 2:11 AM, Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> wrote:

On Fri, 7 Dec 2012, G.R. wrote:
> I won't be able to reproduce the bug, so I thank you in advance for any
> help you can give me with testing a fix
>
> Thanks for your fix, I'll try it out tomorrow and post the result -- it's too late today.
> But I'm wondering if it is specific to 4.1.3, or have been fixed in 4.2 already.

I don't think it has been fixes in 4.2

Thanks Stefano. The fix solved the regression caused by the mistranslate patch.
I guess you can submit this patch for further verification.

But unfortunately it does not help to make the IGD work in pure HVM guest.
I've enabled drm.debug log and dumped the IGD register value for both passing && failing case.
They do have some differences. I'm contacting the driver developer to identify the fatal ones.

I hope this effort can finally make win7 work also.
Currently it simply BSOD at early booting stage after the driver is installed.
I have no way to debug directly -- if you have any suggestion, please share with me.

Thanks,
Timothy

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