On 03/13/2015 08:39 AM, Radim Krčmář wrote:
...
> The warning message is very clever:
> - it contains the magical "may" qualifier and being protected only by
> RH=1 creates weird-looking code structure, but it is technically right
> 1) lowest-priority delivery may be set in msi.data, which avoids our
> otherwise incorrect behavior with RH=1/DM=1
> 2) RH=1/DM=0 can't deliver to multiple APICs (broadcast is forbidden),
> but real hardware may overwrite delivery mode from msi.data
> - being two lines apart adds to suspicion, yet it can be hint to those
> possible problems
>
> I only fear it is too clever :)
>
For the error message, how does:
kvm: MSI RH=1 unsupported, use low-priority delivery mode
Sit with you?
-James
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