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[Xen-devel] Re: [PATCH 4/7] acpi: use indirect call to register gsi in d

To: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Subject: [Xen-devel] Re: [PATCH 4/7] acpi: use indirect call to register gsi in different modes
From: "H. Peter Anvin" <hpa@xxxxxxxxx>
Date: Wed, 06 Oct 2010 10:31:03 -0700
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, "jeremy@xxxxxxxx" <jeremy@xxxxxxxx>, x86@xxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, "konrad.wilk@xxxxxxxxxx" <konrad.wilk@xxxxxxxxxx>
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On 10/06/2010 10:00 AM, Stefano Stabellini wrote:
> Peter,
> I sent this patch a while back as part of the "PV on HVM: receive
> interrupts as xen events" series (that it is based upon Konrad's
> pcifront series, he sent another version to the list yesterday).
> Do you think that this is a reasonble approach?
> If you want to give a look at the whole series you can find it here:
> http://lkml.org/lkml/2010/8/30/170
> everything else is Xen specific stuff.
> Thanks in advance,

On the surface it seems reasonable.

Thomas Gleixner has been working on greatly revamping a bunch of the x86
interrupt code, and this might interact with his stuff, so it would be
good if he could comment on it.

[tglx: what they're apparently working on is to redirect APIC interrupts
to Xen event channels so they don't have to interact with the simulated
memory-mapped APIC.  It's "paravirtualization light".]

H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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