@quentusrex -- could you let us know what bug you are seeing? Is it
this MTRR warning in your dmesg?
[ 0.000000] WARNING: at
/build/buildd/linux-2.6.27/arch/x86/kernel/cpu/mtrr/main.c:1500
mtrr_trim_uncached_memory+0x193/0x3b4()
[ 0.000000] WARNING: strange, CPU MTRRs all blank?
If it is not this error could you paste in the specific kernel bug you
saw, any messages produced, any symptoms you are seeing. Also could you
let us know the version of the Ubuntu kernel you are using:
cat /proc/version_signature
If it is this error then this is nothing to worry about it is just a
warning. Later kernels suppress this warning for KVM guests. This
appears to be fixed by the commit below:
commit 4147c8747eace9058c606b35e700060297edaf91
Author: Joerg Roedel <[email protected]>
Date: Thu Feb 21 15:50:14 2008 +0100
x86: don't print a warning when MTRR are blank and running in KVM
Inside a KVM virtual machine the MTRRs are usually blank. This confuses Linu
and causes a warning message at boot. This patch removes that warning messag
when running Linux as a KVM guest.
Signed-off-by: Joerg Roedel <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Andy Whitcroft (apw)
Status: New => In Progress
** Changed in: linux (Ubuntu)
Importance: Undecided => Low
Status: In Progress => Incomplete
--
[intrepid] kernel bug
https://bugs.launchpad.net/bugs/337551
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