[PATCH 3/3] x86/split_lock: Add Tremont family CPU models

Tony Luck
2020-04-16T20:58:06Z

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

Fixes: 6650cdd9a8cc ("x86/split_lock: Enable split lock detection by kernel")
Cc: <stable@vger.kernel.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
---
arch/x86/kernel/cpu/intel.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
index 3b43b2c91054..d559481b54a6 100644
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -1130,6 +1130,9 @@ 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),
{}
};

--
2.21.1