linux-kernel - [PATCH v3 07/10] x86/mce: Convert family/model mixed checks to VFM-based checks

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Message-Id: <20241025024602.24318-8-qiuxu.zhuo@intel.com>
Date: Fri, 25 Oct 2024 10:45:59 +0800
From: Qiuxu Zhuo <qiuxu.zhuo@...el.com>
To: bp@...en8.de,
	tony.luck@...el.com
Cc: tglx@...utronix.de,
	dave.hansen@...ux.intel.com,
	mingo@...hat.com,
	hpa@...or.com,
	x86@...nel.org,
	linux-edac@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	qiuxu.zhuo@...el.com
Subject: [PATCH v3 07/10] x86/mce: Convert family/model mixed checks to VFM-based checks

Convert family/model mixed checks to VFM-based checks to make
the code more compact.

Suggested-by: Sohil Mehta <sohil.mehta@...el.com>
Suggested-by: Dave Hansen <dave.hansen@...el.com>
Reviewed-by: Tony Luck <tony.luck@...el.com>
Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@...el.com>
---
Changes in v3:
  - Newly added.

 arch/x86/kernel/cpu/mce/core.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c
index bb8b1000fa0a..936804a5a0b9 100644
--- a/arch/x86/kernel/cpu/mce/core.c
+++ b/arch/x86/kernel/cpu/mce/core.c
@@ -1924,6 +1924,10 @@ static void apply_quirks_intel(struct cpuinfo_x86 *c)
 	struct mce_bank *mce_banks = this_cpu_ptr(mce_banks_array);
 	struct mca_config *cfg = &mca_cfg;
 
+	/* Older CPUs (prior to family 6) don't need quirks. */
+	if (c->x86_vfm < INTEL_PENTIUM_PRO)
+		return;
+
 	/*
 	 * SDM documents that on family 6 bank 0 should not be written
 	 * because it aliases to another special BIOS controlled
@@ -1932,22 +1936,21 @@ static void apply_quirks_intel(struct cpuinfo_x86 *c)
 	 * Don't ignore bank 0 completely because there could be a
 	 * valid event later, merely don't write CTL0.
 	 */
-	if (c->x86 == 6 && c->x86_model < 0x1A && this_cpu_read(mce_num_banks) > 0)
+	if (c->x86_vfm < INTEL_NEHALEM_EP && this_cpu_read(mce_num_banks) > 0)
 		mce_banks[0].init = false;
 
 	/*
 	 * All newer Intel systems support MCE broadcasting. Enable
 	 * synchronization with a one second timeout.
 	 */
-	if ((c->x86 > 6 || (c->x86 == 6 && c->x86_model >= 0xe)) &&
-	    cfg->monarch_timeout < 0)
+	if (c->x86_vfm >= INTEL_CORE_YONAH && cfg->monarch_timeout < 0)
 		cfg->monarch_timeout = USEC_PER_SEC;
 
 	/*
 	 * There are also broken BIOSes on some Pentium M and
 	 * earlier systems:
 	 */
-	if (c->x86 == 6 && c->x86_model <= 13 && cfg->bootlog < 0)
+	if (c->x86_vfm < INTEL_CORE_YONAH && cfg->bootlog < 0)
 		cfg->bootlog = 0;
 
 	if (c->x86_vfm == INTEL_SANDYBRIDGE_X)
-- 
2.17.1