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From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: "Dong, Eddie" <eddie.dong-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Cc: kvm-devel <kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>
Subject: Re: [PATCH][UPDATE] shortcut for lightweight VM Exit
Date: Mon, 30 Apr 2007 10:49:36 +0300	[thread overview]
Message-ID: <46359F90.9010306@qumranet.com> (raw)
In-Reply-To: <10EA09EFD8728347A513008B6B0DA77A015EDDA8-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>

Dong, Eddie wrote:
> This patch provides short cut handling for light weight VM Exit, which 
> can boost KB performance 11% under FC5 guest.
> Any comments?

While the patch looks good, it kills FC6 x86_64 boot with a double 
fault. Guest kernel is 2.6.18-1.2798. dmesg says

inject_page_fault: double fault 0x7fff79b58fd8 @ 0xffffffff8025cca1

I've reproduced this with the your patch applied on top of 
8dfdb0d81fb9e858c14e03fd5e007b20167cd065, which is before my mmio 
optimization that caused another regression, to make sure it is not 
exposing a bug in my patch.

-- 
error compiling committee.c: too many arguments to function


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  parent reply	other threads:[~2007-04-30  7:49 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-04-30  7:01 [PATCH][UPDATE] shortcut for lightweight VM Exit Dong, Eddie
     [not found] ` <10EA09EFD8728347A513008B6B0DA77A015EDDA8-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-04-30  7:49   ` Avi Kivity [this message]
     [not found]     ` <46359F90.9010306-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-30 11:23       ` Dong, Eddie
     [not found]         ` <10EA09EFD8728347A513008B6B0DA77A015EDE49-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-04-30 13:10           ` Avi Kivity
     [not found]             ` <4635EAD7.1030405-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-05-08  5:08               ` Dong, Eddie
2007-05-08  9:59           ` [PATCH][UPDATE] Shortcut MSR save/restore for lightweight VM Exit (was: RE: shortcut for lightweight VM Exit) Dong, Eddie
     [not found]             ` <10EA09EFD8728347A513008B6B0DA77A0165CEA9-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-05-08 11:15               ` [PATCH][UPDATE] Shortcut MSR save/restore for lightweight VM Exit Avi Kivity
     [not found]                 ` <46405BC6.1030001-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-05-08 11:51                   ` Dong, Eddie

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