summaryrefslogtreecommitdiff
path: root/arch/x86/kernel/cpu
diff options
context:
space:
mode:
authorYinghai Lu <yhlu.kernel@gmail.com>2008-07-12 14:31:28 -0700
committerIngo Molnar <mingo@elte.hu>2008-07-13 08:19:16 +0200
commit965194c15dc9e4f3bc44432b39c441c86af7f11d (patch)
tree0afa32ccb270ff2f506299744c184a4c9ab83c7a /arch/x86/kernel/cpu
parent7ab073b6e0cde1544f4e79fadb75532528af7595 (diff)
x86: max_low_pfn_mapped fix, #2
tighten the boundary checks around max_low_pfn_mapped - dont overmap nor undermap into holes. also print out tseg for AMD cpus, for diagnostic purposes. (this is an SMM area, and we split up any big mappings around that area) Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/cpu')
-rw-r--r--arch/x86/kernel/cpu/amd_64.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/amd_64.c b/arch/x86/kernel/cpu/amd_64.c
index bd182b7616ee..7c36fb8a28d4 100644
--- a/arch/x86/kernel/cpu/amd_64.c
+++ b/arch/x86/kernel/cpu/amd_64.c
@@ -200,6 +200,7 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
* benefit in doing so.
*/
if (!rdmsrl_safe(MSR_K8_TSEG_ADDR, &tseg)) {
+ printk(KERN_DEBUG "tseg: %010llx\n", tseg);
if ((tseg>>PMD_SHIFT) <
(max_low_pfn_mapped>>(PMD_SHIFT-PAGE_SHIFT)) ||
((tseg>>PMD_SHIFT) <