[Xen-devel] Re: [PATCH] xen/events: Use PIRQ instead of GSI value when unmapping MSI/MSI-X irqs.

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Fri, 19 Nov 2010, Konrad Rzeszutek Wilk wrote:
> When we allocate a vector for MSI/MSI-X we save away the PIRQ, and the
> vector value. When we unmap (de-allocate) the MSI/MSI-X vector(s) we
> need to provide the PIRQ and the vector value. What we did instead
> was to provide the GSI (which was zero) and the vector value, and we
> got these unhappy error messages:
> 
> (XEN) irq.c:1575: dom0: pirq 0 not mapped
> [    7.733415] unmap irq failed -22
> 
> This patches fixes this and we use the PIRQ value instead of the GSI
> value.
> 
> CC: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
> 
> P.S.
> Stefano, I've tested this on domain zero. The path on PVonHVM looks correct,
> but I would appreciate you taking a look at this.

Acked-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>


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