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| author | Kohei Tarumizu <tarumizu.kohei@fujitsu.com> | 2022-08-24 09:44:10 -0700 |
|---|---|---|
| committer | Dave Hansen <dave.hansen@linux.intel.com> | 2022-08-31 11:42:17 -0700 |
| commit | 499c8bb4693d1c8d8f3d6dd38e5bdde3ff5bd906 (patch) | |
| tree | b6b1ab36b80d45f1e4e54e61ad4d659c298d5c42 /arch/x86/kernel/cpu/microcode | |
| parent | b90cb1053190353cc30f0fef0ef1f378ccc063c5 (diff) | |
x86/resctrl: Fix to restore to original value when re-enabling hardware prefetch register
The current pseudo_lock.c code overwrites the value of the
MSR_MISC_FEATURE_CONTROL to 0 even if the original value is not 0.
Therefore, modify it to save and restore the original values.
Fixes: 018961ae5579 ("x86/intel_rdt: Pseudo-lock region creation/removal core")
Fixes: 443810fe6160 ("x86/intel_rdt: Create debugfs files for pseudo-locking testing")
Fixes: 8a2fc0e1bc0c ("x86/intel_rdt: More precise L2 hit/miss measurements")
Signed-off-by: Kohei Tarumizu <tarumizu.kohei@fujitsu.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lkml.kernel.org/r/eb660f3c2010b79a792c573c02d01e8e841206ad.1661358182.git.reinette.chatre@intel.com
Diffstat (limited to 'arch/x86/kernel/cpu/microcode')
0 files changed, 0 insertions, 0 deletions