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x86: add noclflush option

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To disable CLFLUSH usage, especially in change_page_attr().

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Andi Kleen
2008-01-30 13:33:21 +01:00
committed by Ingo Molnar
parent 404ee5b14b
commit 191679fdfa
3 changed files with 16 additions and 0 deletions
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Documentation/kernel-parameters.txt
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@@ -1191,6 +1191,8 @@ and is between 256 and 4096 characters. It is defined in the file
register save and restore. The kernel will only save
legacy floating-point registers on task switch.
noclflush [BUGS=X86] Don't use the CLFLUSH instruction
nohlt [BUGS=ARM]
no-hlt [BUGS=X86-32] Tells the kernel that the hlt