diff options
| author | Tony Luck <tony.luck@intel.com> | 2018-06-08 09:07:32 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-06-26 07:54:05 +0800 |
| commit | 4ea9a1cd0fc96f046f1131fa85932f1b6ef7923d (patch) | |
| tree | 12f45cd418c21db306a68eed44cfe7185d74c9c6 | |
| parent | 75ade4fd599818ae65107a9d45f66faacfb2cca9 (diff) | |
x86/intel_rdt: Enable CMT and MBM on new Skylake stepping
commit 1d9f3e20a56d33e55748552aeec597f58542f92d upstream.
New stepping of Skylake has fixes for cache occupancy and memory
bandwidth monitoring.
Update the code to enable these by default on newer steppings.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: stable@vger.kernel.org # v4.14
Cc: Vikas Shivappa <vikas.shivappa@linux.intel.com>
Link: https://lkml.kernel.org/r/20180608160732.9842-1-tony.luck@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/x86/kernel/cpu/intel_rdt.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/intel_rdt.c b/arch/x86/kernel/cpu/intel_rdt.c index 589b948e6e01..316a8875bd90 100644 --- a/arch/x86/kernel/cpu/intel_rdt.c +++ b/arch/x86/kernel/cpu/intel_rdt.c @@ -821,6 +821,8 @@ static __init void rdt_quirks(void) case INTEL_FAM6_SKYLAKE_X: if (boot_cpu_data.x86_stepping <= 4) set_rdt_options("!cmt,!mbmtotal,!mbmlocal,!l3cat"); + else + set_rdt_options("!l3cat"); } } |