From patchwork Wed Sep 18 05:54:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tony W Wang-oc X-Patchwork-Id: 13806609 Received: from mx2.zhaoxin.com (mx2.zhaoxin.com [203.110.167.99]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D484E16FF5F for ; Wed, 18 Sep 2024 06:37:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=203.110.167.99 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726641449; cv=none; b=sfVRtP24p8B4+5p2fTcpx6/k7WCKdLeUMAOQKNy6GY5b0uh8Z6Cl4HoKSEY+vkVMCNyRJ7Umr5eVHlzoFbZQd/cvAIaQ+NAYiYmH/RyS5g06fpJOd3/yfWz7Hyt/3kMYdXfcSZtu92ZDGfo1oNYIqr2PZ62/YOrMGFfi3mE1S6g= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726641449; c=relaxed/simple; bh=GvgQJTd21P7Cx1enPoHooMLpVxGar3AjZOHkK9fht4Q=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=t5WosnKs31RJpQedmFlDkkducng8pxL5bUudwvNig1GP/timwk+XngvnuyIug/XuR7swq1PgjBkGiVKQcJ58jTi+g3KNq05VDNnmuROzNIqZdK1tUfFyqQquJQjQHf1E6Y/cRnrRMYIBxvbT8Dx3RWyGypaLlN+dbwjCI/1yhSs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=zhaoxin.com; spf=pass smtp.mailfrom=zhaoxin.com; arc=none smtp.client-ip=203.110.167.99 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=zhaoxin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=zhaoxin.com X-ASG-Debug-ID: 1726641436-1eb14e31a910e980001-QCVQLf Received: from ZXSHMBX3.zhaoxin.com (ZXSHMBX3.zhaoxin.com [10.28.252.165]) by mx2.zhaoxin.com with ESMTP id gHlV3rbiqUBi4BKr (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NO); Wed, 18 Sep 2024 14:37:16 +0800 (CST) X-Barracuda-Envelope-From: TonyWWang-oc@zhaoxin.com X-Barracuda-RBL-Trusted-Forwarder: 10.28.252.165 Received: from ZXSHMBX2.zhaoxin.com (10.28.252.164) by ZXSHMBX3.zhaoxin.com (10.28.252.165) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Wed, 18 Sep 2024 14:37:16 +0800 Received: from ZXSHMBX2.zhaoxin.com ([fe80::d4e0:880a:d21:684d]) by ZXSHMBX2.zhaoxin.com ([fe80::d4e0:880a:d21:684d%4]) with mapi id 15.01.2507.039; Wed, 18 Sep 2024 14:37:15 +0800 X-Barracuda-RBL-Trusted-Forwarder: 10.28.252.165 Received: from localhost.localdomain (10.32.65.165) by ZXBJMBX03.zhaoxin.com (10.29.252.7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Wed, 18 Sep 2024 13:54:37 +0800 From: Tony W Wang-oc To: , , , , , , , , CC: , , , Lyle Li Subject: [PATCH v3 2/3] x86/mce: Add zhaoxin.c to support Zhaoxin MCA Date: Wed, 18 Sep 2024 13:54:35 +0800 X-ASG-Orig-Subj: [PATCH v3 2/3] x86/mce: Add zhaoxin.c to support Zhaoxin MCA Message-ID: <20240918055436.15551-3-TonyWWang-oc@zhaoxin.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240918055436.15551-1-TonyWWang-oc@zhaoxin.com> References: <20240910092652.13354-1-TonyWWang-oc@zhaoxin.com> <20240918055436.15551-1-TonyWWang-oc@zhaoxin.com> Precedence: bulk X-Mailing-List: linux-edac@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: zxbjmbx1.zhaoxin.com (10.29.252.163) To ZXBJMBX03.zhaoxin.com (10.29.252.7) X-Moderation-Data: 9/18/2024 2:37:14 PM X-Barracuda-Connect: ZXSHMBX3.zhaoxin.com[10.28.252.165] X-Barracuda-Start-Time: 1726641436 X-Barracuda-Encrypted: ECDHE-RSA-AES128-GCM-SHA256 X-Barracuda-URL: https://10.28.252.36:4443/cgi-mod/mark.cgi X-Virus-Scanned: by bsmtpd at zhaoxin.com X-Barracuda-Scan-Msg-Size: 6821 X-Barracuda-BRTS-Status: 1 X-Barracuda-Bayes: INNOCENT GLOBAL 0.0000 1.0000 -2.0210 X-Barracuda-Spam-Score: -2.02 X-Barracuda-Spam-Status: No, SCORE=-2.02 using global scores of TAG_LEVEL=1000.0 QUARANTINE_LEVEL=1000.0 KILL_LEVEL=9.0 tests= X-Barracuda-Spam-Report: Code version 3.2, rules version 3.2.3.130611 Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- From: Lyle Li For the sake of code standardization, add zhaoxin.c to override the Zhaoxin MCA code. Signed-off-by: Lyle Li Signed-off-by: Tony W Wang-oc --- arch/x86/Kconfig | 8 ++++ arch/x86/kernel/cpu/mce/Makefile | 2 +- arch/x86/kernel/cpu/mce/core.c | 57 -------------------------- arch/x86/kernel/cpu/mce/internal.h | 7 ++++ arch/x86/kernel/cpu/mce/zhaoxin.c | 65 ++++++++++++++++++++++++++++++ 5 files changed, 81 insertions(+), 58 deletions(-) create mode 100644 arch/x86/kernel/cpu/mce/zhaoxin.c diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 1d7122a18..b908cdfb9 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1171,6 +1171,14 @@ config X86_MCE_INTEL Additional support for intel specific MCE features such as the thermal monitor. +config X86_MCE_ZHAOXIN + def_bool y + prompt "Zhaoxin MCE features" + depends on X86_MCE_INTEL + help + Additional support for zhaoxin specific MCE features such as + the corrected machine check interrupt. + config X86_MCE_AMD def_bool y prompt "AMD MCE features" diff --git a/arch/x86/kernel/cpu/mce/Makefile b/arch/x86/kernel/cpu/mce/Makefile index 015856abd..2e863e78d 100644 --- a/arch/x86/kernel/cpu/mce/Makefile +++ b/arch/x86/kernel/cpu/mce/Makefile @@ -5,7 +5,7 @@ obj-$(CONFIG_X86_ANCIENT_MCE) += winchip.o p5.o obj-$(CONFIG_X86_MCE_INTEL) += intel.o obj-$(CONFIG_X86_MCE_AMD) += amd.o obj-$(CONFIG_X86_MCE_THRESHOLD) += threshold.o - +obj-$(CONFIG_X86_MCE_ZHAOXIN) += zhaoxin.o mce-inject-y := inject.o obj-$(CONFIG_X86_MCE_INJECT) += mce-inject.o diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c index 7f79d900f..5315c86b6 100644 --- a/arch/x86/kernel/cpu/mce/core.c +++ b/arch/x86/kernel/cpu/mce/core.c @@ -1963,17 +1963,6 @@ static int __mcheck_cpu_apply_quirks(struct cpuinfo_x86 *c) mce_flags.skx_repmov_quirk = 1; } - if (c->x86_vendor == X86_VENDOR_ZHAOXIN) { - /* - * All newer Zhaoxin CPUs support MCE broadcasting. Enable - * synchronization with a one second timeout. - */ - if (c->x86 > 6 || (c->x86_model == 0x19 || c->x86_model == 0x1f)) { - if (cfg->monarch_timeout < 0) - cfg->monarch_timeout = USEC_PER_SEC; - } - } - if (cfg->monarch_timeout < 0) cfg->monarch_timeout = 0; if (cfg->bootlog != 0) @@ -2016,49 +2005,6 @@ static void __mcheck_cpu_init_early(struct cpuinfo_x86 *c) } } -static void mce_centaur_feature_init(struct cpuinfo_x86 *c) -{ - struct mca_config *cfg = &mca_cfg; - - /* - * All newer Centaur CPUs support MCE broadcasting. Enable - * synchronization with a one second timeout. - */ - if ((c->x86 == 6 && c->x86_model == 0xf && c->x86_stepping >= 0xe) || - c->x86 > 6) { - if (cfg->monarch_timeout < 0) - cfg->monarch_timeout = USEC_PER_SEC; - } -} - -static void mce_zhaoxin_feature_init(struct cpuinfo_x86 *c) -{ - struct mce_bank *mce_banks = this_cpu_ptr(mce_banks_array); - - /* - * These CPUs have MCA bank 8 which reports only one error type called - * SVAD (System View Address Decoder). The reporting of that error is - * controlled by IA32_MC8.CTL.0. - * - * If enabled, prefetching on these CPUs will cause SVAD MCE when - * virtual machines start and result in a system panic. Always disable - * bank 8 SVAD error by default. - */ - if ((c->x86 == 7 && c->x86_model == 0x1b) || - (c->x86_model == 0x19 || c->x86_model == 0x1f)) { - if (this_cpu_read(mce_num_banks) > 8) - mce_banks[8].ctl = 0; - } - - intel_init_cmci(); - intel_init_lmce(); -} - -static void mce_zhaoxin_feature_clear(struct cpuinfo_x86 *c) -{ - intel_clear_lmce(); -} - static void __mcheck_cpu_init_vendor(struct cpuinfo_x86 *c) { switch (c->x86_vendor) { @@ -2076,9 +2022,6 @@ static void __mcheck_cpu_init_vendor(struct cpuinfo_x86 *c) break; case X86_VENDOR_CENTAUR: - mce_centaur_feature_init(c); - break; - case X86_VENDOR_ZHAOXIN: mce_zhaoxin_feature_init(c); break; diff --git a/arch/x86/kernel/cpu/mce/internal.h b/arch/x86/kernel/cpu/mce/internal.h index 01f8f0396..836e56027 100644 --- a/arch/x86/kernel/cpu/mce/internal.h +++ b/arch/x86/kernel/cpu/mce/internal.h @@ -334,4 +334,11 @@ static __always_inline u32 mca_msr_reg(int bank, enum mca_msr reg) } extern void (*mc_poll_banks)(void); +#ifdef CONFIG_X86_MCE_ZHAOXIN +void mce_zhaoxin_feature_init(struct cpuinfo_x86 *c); +void mce_zhaoxin_feature_clear(struct cpuinfo_x86 *c); +#else +static inline void mce_zhaoxin_feature_init(struct cpuinfo_x86 *c) { } +static inline void mce_zhaoxin_feature_clear(struct cpuinfo_x86 *c) { } +#endif #endif /* __X86_MCE_INTERNAL_H__ */ diff --git a/arch/x86/kernel/cpu/mce/zhaoxin.c b/arch/x86/kernel/cpu/mce/zhaoxin.c new file mode 100644 index 000000000..de69c560f --- /dev/null +++ b/arch/x86/kernel/cpu/mce/zhaoxin.c @@ -0,0 +1,65 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Zhaoxin specific MCE features + * Author: Lyle Li + */ +#include +#include "internal.h" + +static void mce_zhaoxin_apply_mce_broadcast(struct cpuinfo_x86 *c) +{ + struct mca_config *cfg = &mca_cfg; + + /* Older CPUs do not do MCE broadcast */ + if (c->x86 < 6) + return; + /* + * All newer Zhaoxin and Centaur CPUs support MCE broadcasting. Enable + * synchronization with a one second timeout. + */ + if (c->x86 > 6) + goto mce_broadcast; + + if (c->x86_vendor == X86_VENDOR_CENTAUR) { + if (c->x86_model == 0xf && c->x86_stepping >= 0xe) + goto mce_broadcast; + } else if (c->x86_vendor == X86_VENDOR_ZHAOXIN) { + if (c->x86_model == 0x19 || c->x86_model == 0x1f) + goto mce_broadcast; + } + + return; + +mce_broadcast: + if (cfg->monarch_timeout <= 0) + cfg->monarch_timeout = USEC_PER_SEC; +} + +void mce_zhaoxin_feature_init(struct cpuinfo_x86 *c) +{ + struct mce_bank *mce_banks = this_cpu_ptr(mce_banks_array); + + /* + * These CPUs have MCA bank 8 which reports only one error type called + * SVAD (System View Address Decoder). The reporting of that error is + * controlled by IA32_MC8.CTL.0. + * + * If enabled, prefetching on these CPUs will cause SVAD MCE when + * virtual machines start and result in a system panic. Always disable + * bank 8 SVAD error by default. + */ + if ((c->x86 == 7 && c->x86_model == 0x1b) || + (c->x86_model == 0x19 || c->x86_model == 0x1f)) { + if (this_cpu_read(mce_num_banks) > 8) + mce_banks[8].ctl = 0; + } + + mce_zhaoxin_apply_mce_broadcast(c); + intel_init_cmci(); + intel_init_lmce(); +} + +void mce_zhaoxin_feature_clear(struct cpuinfo_x86 *c) +{ + intel_clear_lmce(); +}