linux-kernel - [tip: x86/urgent] x86/split_lock: Add Tremont family CPU models

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Date:   Sat, 18 Apr 2020 10:54:50 -0000
From:   "tip-bot2 for Tony Luck" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Tony Luck <tony.luck@...el.com>,
        Thomas Gleixner <tglx@...utronix.de>, x86 <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [tip: x86/urgent] x86/split_lock: Add Tremont family CPU models

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

Commit-ID:     8b9a18a9f2494144fe23fe630d0734310fa65301
Gitweb:        https://git.kernel.org/tip/8b9a18a9f2494144fe23fe630d0734310fa65301
Author:        Tony Luck <tony.luck@...el.com>
AuthorDate:    Thu, 16 Apr 2020 13:57:54 -07:00
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Sat, 18 Apr 2020 12:48:44 +02:00

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@...el.com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Link: https://lkml.kernel.org/r/20200416205754.21177-4-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 c23ad48..a19a680 100644
--- 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),
 	{}
 };