Re: [Xen-devel] [PATCH] x86/hvm: more sure APIC assist is aborted if guest EOIs APIC

[Paul Durrant <Paul.Durrant@xxxxxxxxxx>]

> -----Original Message-----
> From: Jan Beulich [mailto:JBeulich@xxxxxxxx]
> Sent: 18 January 2018 10:17
> To: Paul Durrant <Paul.Durrant@xxxxxxxxxx>
> Cc: Andrew Cooper <Andrew.Cooper3@xxxxxxxxxx>; xen-
> devel@xxxxxxxxxxxxxxxxxxxx
> Subject: RE: [PATCH] x86/hvm: more sure APIC assist is aborted if guest EOIs
> APIC
> 
> >>> On 18.01.18 at 10:55, <Paul.Durrant@xxxxxxxxxx> wrote:
> > Ok. I'll re-work it so that abort is passed a vector and warns on mismatch.
> 
> You mean on the new path only, I suppose? The old path should
> not trigger warnings (aiui it would always do so).

I think, in the existing abort case, the latched vector should always be the 
lowest pending bit in the ISR.

  Paul

> 
> Jan


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