Messages in this thread Patch in this message | | | Date | Thu, 27 Feb 2014 08:42:38 -0800 | From | "tip-bot for H. Peter Anvin" <> | Subject | [tip:x86/cpufeature] x86, cpufeature: If we disable CLFLUSH, we should disable CLFLUSHOPT |
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Commit-ID: da4aaa7d860c63a1bfd3c73cf8309afe2840c5b9 Gitweb: http://git.kernel.org/tip/da4aaa7d860c63a1bfd3c73cf8309afe2840c5b9 Author: H. Peter Anvin <hpa@linux.intel.com> AuthorDate: Thu, 27 Feb 2014 08:36:31 -0800 Committer: H. Peter Anvin <hpa@linux.intel.com> CommitDate: Thu, 27 Feb 2014 08:36:31 -0800
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 <ross.zwisler@linux.intel.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> 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 2c6ac6f..cca53d8 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);
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