From da4aaa7d860c63a1bfd3c73cf8309afe2840c5b9 Mon Sep 17 00:00:00 2001 From: "H. Peter Anvin" Date: Thu, 27 Feb 2014 08:36:31 -0800 Subject: [PATCH] x86, cpufeature: If we disable CLFLUSH, we should disable CLFLUSHOPT If we explicitly disable the use of CLFLUSH, we should disable the use of CLFLUSHOPT as well. Cc: Ross Zwisler Signed-off-by: H. Peter Anvin Link: http://lkml.kernel.org/n/tip-jtdv7btppr4jgzxm3sxx1e74@git.kernel.org --- arch/x86/kernel/cpu/common.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 2c6ac6f2b5b1..cca53d88762a 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1026,6 +1026,7 @@ __setup("show_msr=", setup_show_msr); static __init int setup_noclflush(char *arg) { setup_clear_cpu_cap(X86_FEATURE_CLFLUSH); + setup_clear_cpu_cap(X86_FEATURE_CLFLUSHOPT); return 1; } __setup("noclflush", setup_noclflush); -- 2.20.1