From: Tony Luck <tony.luck@intel.com>
To: "Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>,
"Hans de Goede" <hansg@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>, Breno Leitao <leitao@debian.org>,
platform-driver-x86@vger.kernel.org,
linux-kernel@vger.kernel.org, patches@lists.linux.dev,
Tony Luck <tony.luck@intel.com>,
Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Subject: [PATCH 2/7] x86/mce: Enumeration updates for Intel bitfix filter reset
Date: Tue, 25 Aug 2026 11:15:21 -0700 [thread overview]
Message-ID: <20260825181526.13203-3-tony.luck@intel.com> (raw)
In-Reply-To: <20260825181526.13203-1-tony.luck@intel.com>
IA32_CORE_CAPABILITIES enumerates the bitfix filter reset feature.
Also add definitions for the threshold status field in the machine
check status registers.
Co-developed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
---
arch/x86/include/asm/mce.h | 6 ++++++
arch/x86/include/asm/msr-index.h | 2 ++
2 files changed, 8 insertions(+)
diff --git a/arch/x86/include/asm/mce.h b/arch/x86/include/asm/mce.h
index e575b702063d..0d5bcb6f1750 100644
--- a/arch/x86/include/asm/mce.h
+++ b/arch/x86/include/asm/mce.h
@@ -13,6 +13,7 @@
#define MCG_CTL_P BIT_ULL(8) /* MCG_CTL register available */
#define MCG_EXT_P BIT_ULL(9) /* Extended registers available */
#define MCG_CMCI_P BIT_ULL(10) /* CMCI supported */
+#define MCG_TES_P BIT_ULL(11) /* Threshold-based error status supported */
#define MCG_SEAM_NR BIT_ULL(12) /* MCG_STATUS_SEAM_NR supported */
#define MCG_EXT_CNT_MASK 0xff0000 /* Number of Extended registers */
#define MCG_EXT_CNT_SHIFT 16
@@ -41,6 +42,11 @@
#define MCI_STATUS_PCC BIT_ULL(57) /* processor context corrupt */
#define MCI_STATUS_S BIT_ULL(56) /* Signaled machine check */
#define MCI_STATUS_AR BIT_ULL(55) /* Action required */
+#define MCI_STATUS_TES_SHIFT 53 /* Threshold-based error status */
+#define MCI_STATUS_TES_MASK GENMASK_ULL(54, 53)
+#define MCI_STATUS_TES(s) (((s) & MCI_STATUS_TES_MASK) >> MCI_STATUS_TES_SHIFT)
+#define MCI_STATUS_TES_GREEN 1 /* Threshold-based errors below threshold */
+#define MCI_STATUS_TES_YELLOW 2 /* Threshold-based errors above threshold */
#define MCI_STATUS_CEC_SHIFT 38 /* Corrected Error Count */
#define MCI_STATUS_CEC_MASK GENMASK_ULL(52,38)
#define MCI_STATUS_CEC(c) (((c) & MCI_STATUS_CEC_MASK) >> MCI_STATUS_CEC_SHIFT)
diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index 18c4be75e927..13d3efc87b14 100644
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -114,6 +114,8 @@
#define MSR_IA32_CORE_CAPS_INTEGRITY_CAPS BIT(MSR_IA32_CORE_CAPS_INTEGRITY_CAPS_BIT)
#define MSR_IA32_CORE_CAPS_SPLIT_LOCK_DETECT_BIT 5
#define MSR_IA32_CORE_CAPS_SPLIT_LOCK_DETECT BIT(MSR_IA32_CORE_CAPS_SPLIT_LOCK_DETECT_BIT)
+#define MSR_IA32_CORE_CAPS_BFF_RESET_DETECT_BIT 9
+#define MSR_IA32_CORE_CAPS_BFF_RESET_DETECT BIT(MSR_IA32_CORE_CAPS_BFF_RESET_DETECT_BIT)
#define MSR_PKG_CST_CONFIG_CONTROL 0x000000e2
#define NHM_C3_AUTO_DEMOTE (1UL << 25)
--
2.55.0
next prev parent reply other threads:[~2026-08-25 18:15 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-25 18:15 [PATCH 0/7] Intel platform driver to reset bitfix filters Tony Luck
2026-08-25 18:15 ` [PATCH 1/7] cacheinfo: Export get_cpu_cacheinfo_id() for loadable modules Tony Luck
2026-08-25 18:15 ` Tony Luck [this message]
2026-08-26 8:15 ` [PATCH 2/7] x86/mce: Enumeration updates for Intel bitfix filter reset Ilpo Järvinen
2026-08-25 18:15 ` [PATCH 3/7] platform/x86/intel/bff: Add stub Intel bitfix filter driver Tony Luck
2026-08-25 18:15 ` [PATCH 4/7] platform/x86/intel/bff: Add Diamond Rapids support Tony Luck
2026-08-26 8:17 ` Ilpo Järvinen
2026-08-25 18:15 ` [PATCH 5/7] platform/x86/intel/bff: Reset bitfix filter when it overflows Tony Luck
2026-08-25 18:15 ` [PATCH 6/7] platform/x86/intel/bff: Compute unique ID for overflowed filter Tony Luck
2026-08-26 8:26 ` Ilpo Järvinen
2026-08-25 18:15 ` [PATCH 7/7] platform/x86/intel/bff: Report frequent filter resets Tony Luck
2026-08-26 8:39 ` Ilpo Järvinen
2026-08-25 18:28 ` [PATCH 0/7] Intel platform driver to reset bitfix filters Borislav Petkov
2026-08-25 18:55 ` Luck, Tony
2026-08-25 19:23 ` Borislav Petkov
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