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| author | Kyung Min Park <kyung.min.park@intel.com> | 2020-08-31 11:35:00 -0700 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-09-01 11:07:15 +0200 |
| commit | ea4e3bef4c94d5b5d8e790f37b48b7641172bcf5 (patch) | |
| tree | 87cd31b2b565d9741b6e44a6bdbc6f08160c4d46 /kernel/ptrace.c | |
| parent | c31feed8461fb8648075ba9b53d9e527d530972f (diff) | |
| download | linux-ea4e3bef4c94d5b5d8e790f37b48b7641172bcf5.tar.gz | |
Documentation/x86: Add documentation for /proc/cpuinfo feature flags
/proc/cpuinfo shows features which the kernel supports. Some of these flags are derived from CPUID, and others are derived from other sources, including some that are entirely software-based. Currently, there is not any documentation in the kernel about how /proc/cpuinfo flags are generated and what it means when they are missing. Add documentation for /proc/cpuinfo feature flags enumeration. Document how and when x86 feature flags are used. Also discuss what their presence or absence mean for the kernel and users. Suggested-by: Dave Hansen <dave.hansen@intel.com> Co-developed-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com> Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com> Signed-off-by: Kyung Min Park <kyung.min.park@intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Tony Luck <tony.luck@intel.com> Link: https://lkml.kernel.org/r/20200831183500.15481-1-kyung.min.park@intel.com
Diffstat (limited to 'kernel/ptrace.c')
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