The following commit has been merged into the x86/splitlock branch of tip:

Commit-ID:     0ed7bf1d92eafc37bb9eb7c8692a8e44d24f9b99
Gitweb:        
https://git.kernel.org/tip/0ed7bf1d92eafc37bb9eb7c8692a8e44d24f9b99
Author:        Fenghua Yu <[email protected]>
AuthorDate:    Thu, 30 Apr 2020 16:46:35 -07:00
Committer:     Borislav Petkov <[email protected]>
CommitterDate: Thu, 14 May 2020 19:25:10 +02:00

x86/split_lock: Add Icelake microserver CPU model

Icelake microserver CPU supports split lock detection while it doesn't
have the split lock enumeration bit in IA32_CORE_CAPABILITIES.

Enumerate the feature by model number.

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]
---
 arch/x86/kernel/cpu/intel.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
index a19a680..b59bc4a 100644
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -1135,6 +1135,7 @@ 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(ICELAKE_D,           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),

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