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Re: [Xen-devel] [PATCH] Make new PCI device probe work with older hyperv

To: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] [PATCH] Make new PCI device probe work with older hypervisors
From: Espen Skoglund <espen.skoglund@xxxxxxxxxxxxx>
Date: Mon, 7 Jul 2008 16:11:07 +0100
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, Espen Skoglund <espen.skoglund@xxxxxxxxxxxxx>
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F[Keir Fraser]
> On 7/7/08 16:04, "Espen Skoglund" <espen.skoglund@xxxxxxxxxxxxx> wrote:
>>> If old dom0 kernels will not work with new Xen on any system
>>> supporting VT-d, even when VT-d features are not going to be used
>>> (e.g., for device passthrough), then that's not really acceptable.
>> 
>>> If you have to upgrade your dom0 kernel to make use of new features
>>> which VT-d enables, that's perfectly acceptable.
>> 
>> Ok.  In that case you'd better revert 17975:a3e4840b1584 and make sure
>> that the PCI device enumration is never taken out of Xen.

> If we revert just that one changeset, will the other patches
> (including the new hypercalls) still work okay?

Yes.

        eSk



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