Commit a7d06ca7 authored by Chen, Kenneth W's avatar Chen, Kenneth W Committed by Linus Torvalds

[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: default avatarKen Chen <kenneth.w.chen@intel.com>
Cc: <stable@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent d3f4aaa3
......@@ -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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