linux-kernel - [PATCH] x86/split_lock: Enumerate split lock feature on Sapphire Rapids and Alder Lake

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Message-Id: <1595634320-79689-1-git-send-email-fenghua.yu@intel.com>
Date:   Fri, 24 Jul 2020 16:45:20 -0700
From:   Fenghua Yu <fenghua.yu@...el.com>
To:     "Thomas Gleixner" <tglx@...utronix.de>,
        "Borislav Petkov" <bp@...en8.de>, "Ingo Molnar" <mingo@...hat.com>,
        "Peter Zijlstra" <peterz@...radead.org>,
        "Tony Luck" <tony.luck@...el.com>, "H Peter Anvin" <hpa@...or.com>,
        "Andy Lutomirski" <luto@...nel.org>,
        "Ravi V Shankar" <ravi.v.shankar@...el.com>,
        "Xiaoyao Li " <xiaoyao.li@...el.com>
Cc:     "x86" <x86@...nel.org>,
        "linux-kernel" <linux-kernel@...r.kernel.org>,
        Fenghua Yu <fenghua.yu@...el.com>
Subject: [PATCH] x86/split_lock: Enumerate split lock feature on Sapphire Rapids and Alder Lake

Add Sapphire Rapids and Alder Lake processors to CPU list to enumerate
split lock feature.

Signed-off-by: Fenghua Yu <fenghua.yu@...el.com>
Reviewed-by: Tony Luck <tony.luck@...el.com>
---

This patch supersedes 
https://lore.kernel.org/lkml/1593208534-33721-1-git-send-email-fenghua.yu@intel.com/
and is applied on top of Alder Lake Intel family patch:
https://lore.kernel.org/lkml/20200721043749.31567-1-tony.luck@intel.com/#iZ30arch:x86:include:asm:intel-family.h

 arch/x86/kernel/cpu/intel.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
index 0ab48f1cdf84..b6b7b38dff5f 100644
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -1156,6 +1156,8 @@ static const struct x86_cpu_id split_lock_cpu_ids[] __initconst = {
 	X86_MATCH_INTEL_FAM6_MODEL(ATOM_TREMONT_L,	1),
 	X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE_L,		1),
 	X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE,		1),
+	X86_MATCH_INTEL_FAM6_MODEL(SAPPHIRERAPIDS_X,	1),
+	X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE,		1),
 	{}
 };
 
-- 
2.19.1