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Fenghua Yusuryasaimadhu
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x86/split_lock: Add Icelake microserver and Tigerlake CPU models
Icelake microserver CPU supports split lock detection while it doesn't have the split lock enumeration bit in IA32_CORE_CAPABILITIES. Tigerlake CPUs do enumerate the MSR. [ bp: Merge the two model-adding patches into one. ] Signed-off-by: Fenghua Yu <[email protected]> Signed-off-by: Borislav Petkov <[email protected]> Reviewed-by: Tony Luck <[email protected]> Link: https://lkml.kernel.org/r/[email protected]
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arch/x86/kernel/cpu/intel.c

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@@ -1135,9 +1135,12 @@ void switch_to_sld(unsigned long tifn)
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static const struct x86_cpu_id split_lock_cpu_ids[] __initconst = {
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X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_X, 0),
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X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_L, 0),
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X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_D, 0),
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X86_MATCH_INTEL_FAM6_MODEL(ATOM_TREMONT, 1),
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X86_MATCH_INTEL_FAM6_MODEL(ATOM_TREMONT_D, 1),
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X86_MATCH_INTEL_FAM6_MODEL(ATOM_TREMONT_L, 1),
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X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE_L, 1),
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X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE, 1),
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{}
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};
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