diff options
| author | Vikas Shivappa <vikas.shivappa@linux.intel.com> | 2017-08-09 11:46:33 -0700 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-08-14 11:47:46 +0200 |
| commit | eda61c265f3656be8345fdf0334b3a77829437fc (patch) | |
| tree | d84279caa545545f9b64bd40bfafc3abb916da43 /arch/x86/kernel/cpu/intel_rdt.c | |
| parent | 0dd2d7494cd818d06a2ae1cd840cd62124a2d25e (diff) | |
x86/intel_rdt/cqm: Clear the default RMID during hotcpu
The user configured per cpu default RMID is not cleared during cpu
hotplug. This may lead to incorrect RMID values after a cpu goes offline
and again comes back online. Clear the per cpu default RMID during cpu
offline and online handling.
Reported-by: Prakyha Sai Praneeth <sai.praneeth.prakhya@intel.com>
Signed-off-by: Vikas Shivappa <vikas.shivappa@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: ravi.v.shankar@intel.com
Cc: tony.luck@intel.com
Cc: fenghua.yu@intel.com
Cc: peterz@infradead.org
Cc: eranian@google.com
Cc: ak@linux.intel.com
Cc: davidcc@google.com
Link: http://lkml.kernel.org/r/1502304395-7166-2-git-send-email-vikas.shivappa@linux.intel.com
Diffstat (limited to 'arch/x86/kernel/cpu/intel_rdt.c')
| -rw-r--r-- | arch/x86/kernel/cpu/intel_rdt.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/intel_rdt.c b/arch/x86/kernel/cpu/intel_rdt.c index da4f3898d517..4b9edb2617a5 100644 --- a/arch/x86/kernel/cpu/intel_rdt.c +++ b/arch/x86/kernel/cpu/intel_rdt.c @@ -551,6 +551,7 @@ static void clear_closid_rmid(int cpu) struct intel_pqr_state *state = this_cpu_ptr(&pqr_state); per_cpu(rdt_cpu_default.closid, cpu) = 0; + per_cpu(rdt_cpu_default.rmid, cpu) = 0; state->closid = 0; state->rmid = 0; wrmsr(IA32_PQR_ASSOC, 0, 0); |