linux-kernel - Re: [patch 0/2] x2apic optimization, round 4

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Date:	Sun, 1 May 2011 21:11:35 +0400
From:	Cyrill Gorcunov <gorcunov@...nvz.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Avi Kivity <avi@...hat.com>, "H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Suresh Siddha <suresh.b.siddha@...el.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [patch 0/2] x2apic optimization, round 4

On Sun, May 1, 2011 at 8:46 PM, Ingo Molnar <mingo@...e.hu> wrote:
>
> * Avi Kivity <avi@...hat.com> wrote:
>
>> On 04/30/2011 08:14 PM, Cyrill Gorcunov wrote:
>> >   Hi Ingo, here is an updated series of two patches for
>> >x2apic cluster mode ipi optimization. Please take a
>> >look.
>> >
>> >   The only concern which was unresolved is a messy bit
>> >in default_setup_apic_routing(), so we've added a FIXME
>> >there and clean it up as only time permits. Actually I
>> >have a plan to merge probe_32/64.c into single file (and
>> >even started working on this task) but not yes succeed.
>> >
>> >   Anyway I think patches should be in a good shape now and
>> >probably we could merge them to not lose?
>> >
>> >   Comments are welcome.
>>
>> Very nice!  This will also significantly speed up kvm guests using x2apic.
>
> Ok. It would be nice to know on what systems these patches were tested, i.e. i
> suppose x2apic-enabled ones?
>
> Thanks,
>
>        Ingo
>

Suresh has tested them on Westmere-Ex system, I personally don't have
such machine.
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