[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [VTD][patch 0/5] HVM device assignment using vt-d
On 31/5/07 16:10, "Tian, Kevin" <kevin.tian@xxxxxxxxx> wrote: > Sure. :-) But I'm still thinking the effect to use virtual EOI as de-assertion > signal, which doesn't require to change polarity in the line frequently. We > can just add a flag per gsi to indicate whether a physical irq is injected > on this line. When intercepting HVM EOI, invoke deassert and also jump > to ->end() if flag is on. Does it work basically? I didn't realise you were suggesting another mechanism. It's not clear to me how it works from the very brief description you give above. Could you provide an example or two for how your method would work (e.g., one which avoids switching polarity, and another where you do end up switching polarity)? -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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