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Re: [Qemu-devel] High CPU Usage with Linux 2.6.24 and Windows XP Guest (

Subject: Re: [Qemu-devel] High CPU Usage with Linux 2.6.24 and Windows XP Guest but not with 2.6.23
From: Steve Fosdick
Date: Thu, 6 Mar 2008 14:31:56 +0000
On Thu, 6 Mar 2008 13:05:55 +0100
"Christian MICHON" <christian.michon@xxxxxxxxx> wrote:

> did you compile both kernels yourself, with similar/compatible
> config/compilers ?

For the 2.6.23 kernel:

Linux version 2.6.23.12-ecrins (xxxx@yyyy) (gcc version 4.2.3 20071123 
(prerelease) (Debian 4.2.2-4)) #3 Thu Dec 20 16:19:41 GMT 2007
Command line: root=/dev/sda1 ro quiet 

For the 2.6.24 kernel:

Linux version 2.6.24.3-ecrins (xxxx@yyyy) (gcc version 4.2.3 (Debia
n 4.2.3-1)) #3 Thu Mar 6 08:48:29 GMT 2008
Command line: root=/dev/sda1 ro quiet 

So, the compiler appear to be the same basic version of gcc, but slightly 
different build.  I will try recompiling the 2.6.23 kernel with the latest 
compiler to see if the problem then occurs.

Regarding the kernel config itself, I attach the two config files and the 
output of diff -u.

HTH,
Steve.

Attachment: config.diff
Description: Text Data

Attachment: config-2.6.23
Description: Text document

Attachment: config-2.6.24
Description: Text document

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