x86/split_lock: Add Tremont family CPU models

Tremont CPUs support IA32_CORE_CAPABILITIES bits to indicate whether
specific SKUs have support for split lock detection.

Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200416205754.21177-4-tony.luck@intel.com

diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
index c23ad48..a19a680 100644 (file)
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -1135,6 +1135,9 @@ void switch_to_sld(unsigned long tifn)
 static const struct x86_cpu_id split_lock_cpu_ids[] __initconst = {
        X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_X,           0),
        X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_L,           0),
+       X86_MATCH_INTEL_FAM6_MODEL(ATOM_TREMONT,        1),
+       X86_MATCH_INTEL_FAM6_MODEL(ATOM_TREMONT_D,      1),
+       X86_MATCH_INTEL_FAM6_MODEL(ATOM_TREMONT_L,      1),
        {}
 };