x86/intel_rdt: Enable CMT and MBM on new Skylake stepping
PATCH 1/1 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.
Cc [email protected] # v4.14
Signed-off-by Tony Luck <[email protected]>
--- arch/x86/kernel/cpu/intel_rdt.c | 2 ++ 1 file changed, 2 insertions(+)
arch/x86/kernel/cpu/intel_rdt.c +2 -0
@@ -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" ); } }
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2.17.0
tip-bot for Tony Luck
merge botx86/intel_rdt: Enable CMT and MBM on new Skylake stepping
Commit-ID: 1d9f3e20a56d33e55748552aeec597f58542f92d Gitweb: https://git.kernel.org/tip/1d9f3e20a56d33e55748552aeec597f58542f92d Author: Tony Luck <[email protected]> AuthorDate: Fri, 8 Jun 2018 09:07:32 -0700 Committer: Thomas Gleixner <[email protected]> CommitDate: Sat, 9 Jun 2018 16:04:34 +0200
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 <[email protected]>
Signed-off-by Thomas Gleixner <[email protected]>
Cc Fenghua Yu <[email protected]>
Cc [email protected] # v4.14
Cc Vikas Shivappa <[email protected]>
--- arch/x86/kernel/cpu/intel_rdt.c | 2 ++ 1 file changed, 2 insertions(+)
arch/x86/kernel/cpu/intel_rdt.c +2 -0
@@ -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" ); } }