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x86/intel_rdt: Enable CMT and MBM on new Skylake stepping 

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
hifive-unleashed-5.1
Tony Luck 2018-06-08 09:07:32 -07:00 committed by Thomas Gleixner
parent a07771ac6a
commit 1d9f3e20a5
1 changed files with 2 additions and 0 deletions
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2
arch/x86/kernel/cpu/intel_rdt.c
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@ -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");
}
}