New stepping of Skylake has fixes for cache occupancy and memory
bandwidth monitoring.
Update the code to enable these by default on newer steppings.
Cc: sta...@vger.kernel.org # v4.14
Signed-off-by: Tony Luck <tony.l...@intel.com>
---
arch/x86/kernel/cpu/intel_rdt.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/x86/kernel/cpu/intel_rdt.c b/arch/x86/kernel/cpu/intel_rdt.c
index 24bfa63e86cf..ec4754f81cbd 100644
--- a/arch/x86/kernel/cpu/intel_rdt.c
+++ b/arch/x86/kernel/cpu/intel_rdt.c
@@ -845,6 +845,8 @@ 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");
}
}
--
2.17.0
