Commit bf3647c4 authored Jan 29, 2009 by Ingo Molnar

x86: tone down mtrr_trim_uncached_memory() warning

kerneloops.org is reporting a lot of these warnings that come due to
vmware not setting up any MTRRs for emulated CPUs:

| Reported 709 times (14696 total reports)
| BIOS bug (often in VMWare) where the MTRR's are set up incorrectly
| or not at all
|
| This warning was last seen in version 2.6.29-rc2-git1, and first
| seen in 2.6.24.
|
| More info:
|   http://www.kerneloops.org/searchweek.php?search=mtrr_trim_uncached_memory



Keep a one-liner KERN_INFO about it - so that we have so notice if empty
MTRRs are caused by native hardware/BIOS weirdness.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent 30a0fb94

arch/x86/kernel/cpu/mtrr/main.c

+1 −2

Original line number	Original line	Diff line number	Diff line
	@@ -1594,8 +1594,7 @@ int __init mtrr_trim_uncached_memory(unsigned long end_pfn)

	/* kvm/qemu doesn't have mtrr set right, don't trim them all */		/* kvm/qemu doesn't have mtrr set right, don't trim them all */
	if (!highest_pfn) {		if (!highest_pfn) {
	WARN(!kvm_para_available(), KERN_WARNING		printk(KERN_INFO "CPU MTRRs all blank - virtualized system.\n");
	"WARNING: strange, CPU MTRRs all blank?\n");
	return 0;		return 0;
	}		}