Re: [Xen-devel] [PATCH] x86/IO-APIC: don't create pIRQ mapping from masked RTE

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Fri, Aug 21, 2015 at 02:41:32AM -0600, Jan Beulich wrote:
> While moving our XenoLinux patches to 4.2-rc I noticed bogus "already
> mapped" messages resulting from Linux (legitimately) writing RTEs with
> only the mask bit set. Clearly we shouldn't even attempt to create a
> pIRQ <-> IRQ mapping from such RTEs.
> 
> In the course of this I also found that the respective message isn't
> really useful without also printing the pre-existing mapping. And I
> noticed that map_domain_pirq() allowed IRQ0 to get through, despite us
> never allowing and domain to control that interrupt.
> 
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Release-acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>

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