Re: [Xen-devel] [PATCH] x86/hvm: implement save/restore for posted interrupts

[Olaf Hering <olaf@xxxxxxxxx>]

On Thu, Jul 17, Zhang, Yang Z wrote:

> Olaf Hering wrote on 2014-07-17:
> > I can probably do that. And I think initially I just changed
> > lapic_save_regs, which was not enough. I think in the end the reason
> > is that with posted irqs the code paths are different and just
> > having IRR set is not enough.
> It doesn't make sense. PIR is more like a tmp_IRR. All interrupts
> pending in PIR will finally sync to IRR by hardware. In your case, you
> already record it in IRR, it should be enough.  The problem I am
> seeing is that the eoi_exit_bitmap need to be setup correct after
> migration, please try attached patch to see whether it solves your
> problem:

No, this patch does not work for me. Does it work for you?

Olaf

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