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

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Message-ID: <BANLkTi=Bw5k1_oytZmXgTrQ-XUJisp3vfQ@mail.gmail.com>
Date:	Mon, 2 May 2011 09:51:32 +0400
From:	Cyrill Gorcunov <gorcunov@...nvz.org>
To:	Gleb Natapov <gleb@...hat.com>
Cc:	Cyrill Gorcunov <gorcunov@...nvz.org>, Ingo Molnar <mingo@...e.hu>,
	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

Yeah, i'll do so as only bring my laptop to life, I managed to kill
grub and can't restore it back for a while, will ping you back as soon
as I can.

Sorry for top post.

On Monday, May 2, 2011, Gleb Natapov <gleb@...hat.com> wrote:
> On Sun, May 01, 2011 at 09:11:35PM +0400, Cyrill Gorcunov wrote:
>> 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.
> Can you test in in KVM with x2apic emulation enabled?
>
> --
>                         Gleb.
>
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