linux-kernel - [tip: x86/splitlock] x86/split_lock: Add Icelake microserver and Tigerlake CPU models

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Message-ID: <159069314027.17951.2763225967135461088.tip-bot2@tip-bot2>
Date:   Thu, 28 May 2020 19:12:20 -0000
From:   "tip-bot2 for Fenghua Yu" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Fenghua Yu <fenghua.yu@...el.com>, Borislav Petkov <bp@...e.de>,
        Tony Luck <tony.luck@...el.com>, x86 <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [tip: x86/splitlock] x86/split_lock: Add Icelake microserver and
 Tigerlake CPU models

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

Commit-ID:     429ac8b75a0b1c3478ffd584de8a63075cbe25e7
Gitweb:        https://git.kernel.org/tip/429ac8b75a0b1c3478ffd584de8a63075cbe25e7
Author:        Fenghua Yu <fenghua.yu@...el.com>
AuthorDate:    Thu, 30 Apr 2020 16:46:35 -07:00
Committer:     Borislav Petkov <bp@...e.de>
CommitterDate: Thu, 28 May 2020 21:06:42 +02:00

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 <fenghua.yu@...el.com>
Signed-off-by: Borislav Petkov <bp@...e.de>
Reviewed-by: Tony Luck <tony.luck@...el.com>
Link: https://lkml.kernel.org/r/1588290395-2677-1-git-send-email-fenghua.yu@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 a19a680..6abbcc7 100644
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -1135,9 +1135,12 @@ 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),
+	X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE_L,		1),
+	X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE,		1),
 	{}
 };