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: remove redundant VM Exit for non-aligned guest pte write or part of pte write.
Date: Thu, 20 Dec 2007 11:21:58 +0200 [thread overview]
Message-ID: <476A3436.1000900@qumranet.com> (raw)
In-Reply-To: <10EA09EFD8728347A513008B6B0DA77A028A6DB2-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
Dong, Eddie wrote:
> I observed 1-2 seconds faster in Windows XPSP2 ACPI bootup with total of
> 23 seconds.
> I can;t say it is exactly caused by this patch, but anyway it simplifies
> the logic and
> code w/o any additional complexity.
> thx,eddie
>
>
>
Patch looks good, but will delay so that the guest scaling patch can be
merged. kvm_read_guest() will need to change to
kvm_read_guest_inatomic(), since the mmu is becoming spinlocked.
--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.
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next prev parent reply other threads:[~2007-12-20 9:21 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-20 8:51 remove redundant VM Exit for non-aligned guest pte write or part of pte write Dong, Eddie
[not found] ` <10EA09EFD8728347A513008B6B0DA77A028A6DB2-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-12-20 9:21 ` Avi Kivity [this message]
[not found] ` <476A3436.1000900-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-04 6:14 ` Dong, Eddie
[not found] ` <10EA09EFD8728347A513008B6B0DA77A029B5503-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2008-01-06 8:50 ` Avi Kivity
[not found] ` <47809670.9090706-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-06 13:59 ` Dong, Eddie
[not found] ` <10EA09EFD8728347A513008B6B0DA77A029B57CD-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2008-01-07 9:15 ` Avi Kivity
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