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| author | Grzegorz Andrejczuk <grzegorz.andrejczuk@intel.com> | 2017-01-20 16:22:36 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-02-04 10:51:09 +0300 |
| commit | e16fd002afe2b16d828bbf738b8a81a185fe9272 (patch) | |
| tree | 000147567ec578f62192d7f9d4d435a69fc13ffb /Documentation/admin-guide | |
| parent | 1d12d0ef0194ccc4dcebed3d96bb2301b26fc3ee (diff) | |
| download | linux-e16fd002afe2b16d828bbf738b8a81a185fe9272.tar.xz | |
x86/cpufeature: Enable RING3MWAIT for Knights Landing
Enable ring 3 MONITOR/MWAIT for Intel Xeon Phi x200 codenamed Knights
Landing.
Presence of this feature cannot be detected automatically (by reading any
other MSR) therefore it is required to explicitly check for the family and
model of the CPU before attempting to enable it.
Signed-off-by: Grzegorz Andrejczuk <grzegorz.andrejczuk@intel.com>
Cc: Piotr.Luc@intel.com
Cc: dave.hansen@linux.intel.com
Link: http://lkml.kernel.org/r/1484918557-15481-5-git-send-email-grzegorz.andrejczuk@intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index be7c0d9506b1..cfbb3fc938f7 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -3563,6 +3563,10 @@ rhash_entries= [KNL,NET] Set number of hash buckets for route cache + ring3mwait=disable + [KNL] Disable ring 3 MONITOR/MWAIT feature on supported + CPUs. + ro [KNL] Mount root device read-only on boot rodata= [KNL] |