Messages in this thread Patch in this message | | | From | Fenghua Yu <> | Subject | [PATCH v4 12/17] Change document for kernel option clearcpuid | Date | Fri, 1 Mar 2019 18:45:06 -0800 |
| |
Since kernel option clearcpuid now supports multiple options and CPU capability flags, the document needs to be changed.
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> --- Documentation/admin-guide/kernel-parameters.txt | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 858b6c0b9a15..1a195f93d3cc 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -558,10 +558,12 @@ loops can be debugged more effectively on production systems. - clearcpuid=BITNUM [X86] + clearcpuid=BITNUM | FLAG [X86] Disable CPUID feature X for the kernel. See arch/x86/include/asm/cpufeatures.h for the valid bit - numbers. Note the Linux specific bits are not necessarily + numbers or /proc/cpuinfo for valid CPU flags. + Multiple options can be used to disable a few features. + Note the Linux specific bits are not necessarily stable over kernel options, but the vendor specific ones should be. Also note that user programs calling CPUID directly -- 2.7.4
| |