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[Xen-devel] Re: [PATCH] Enable the x2APIC enhancement to Xen

To: "Cui, Dexuan" <dexuan.cui@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-devel] Re: [PATCH] Enable the x2APIC enhancement to Xen
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Mon, 28 Apr 2008 13:17:33 +0100
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What benefits does this patch bring us?

 -- Keir

On 28/4/08 11:02, "Cui, Dexuan" <dexuan.cui@xxxxxxxxx> wrote:

> On platforms which supports x2APIC, the patches enable this enhancement
> for Xen.
> The x2APIC specification is available at
> http://www.intel.com/products/processor/manuals/
> http://download.intel.com/design/processor/specupdt/318148.pdf
> apicid_u8_2_u32.patch: changes the 'apicid' from u8 to u32;
> x2apic.patch: replaces the traditional MMIO-style interface to the
> MSR-style one; uses physical fixed mode to deliver interrupts to CPU0.
> Signed-off-by: Dexuan Cui <dexuan.cui@xxxxxxxxx>

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