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authorChen, Kenneth W <kenneth.w.chen@intel.com>2006-03-25 03:06:50 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-25 08:22:50 -0800
commita7d06ca7b626c9257bee4439d9d80a7e44ae237e (patch)
tree1951ab3f604771885987b46d8858711a4d3ddf88
parentd3f4aaa3d7b4152dac28751ee902f769d03289a1 (diff)
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[PATCH] x86: HUGETLBFS and DEBUG_PAGEALLOC are incompatible
DEBUG_PAGEALLOC is not compatible with hugetlb page support. That debug option turns off PSE. Once it is turned off in CR4, the cpu will ignore pse bit in the pmd and causing infinite page-not- present faults. So disable DEBUG_PAGEALLOC if the user selected hugetlbfs. Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--arch/i386/Kconfig.debug2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/i386/Kconfig.debug b/arch/i386/Kconfig.debug
index 00108ba..c23da88 100644
--- a/arch/i386/Kconfig.debug
+++ b/arch/i386/Kconfig.debug
@@ -45,7 +45,7 @@ comment "Page alloc debug is incompatible with Software Suspend on i386"
config DEBUG_PAGEALLOC
bool "Page alloc debugging"
- depends on DEBUG_KERNEL && !SOFTWARE_SUSPEND
+ depends on DEBUG_KERNEL && !SOFTWARE_SUSPEND && !HUGETLBFS
help
Unmap pages from the kernel linear mapping after free_pages().
This results in a large slowdown, but helps to find certain types
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