From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AB8JxZo2/5qhsAj+glFY2CeqryVFR1Njv0Jmwhe0eYFp3PbYmYDMV8b6ag6XYQ+2oi6IZHl4GTAJ ARC-Seal: i=1; a=rsa-sha256; t=1525081339; cv=none; d=google.com; s=arc-20160816; b=WoQ95ObZFTyo+bLNxH1VFEyvL05OBcX8C/w522KlG4YWiw8+kU18LMkcFeEik29JXt sqL4NipbIfImR8FE9SYhFDZ53QwEJ140vLBGr2VKJH5iZAt5H3+hjuJ/dRXqkO5xlLMy THQVZ9Jvwah6KMK18uveecWSHfy9HEKb0Ag+WccXGB4rbEPKH2ZaC8lHq+5Te6oG2lgO Dj1eyhW6KKCf+zvcn7+Md9BtEilCR6RprGDrg2FBPlVrRSl1Xp0h4DPkVBAa9xTRRWIU v4f2kN/iqp4xVtIqdkZRsHaquWx0QVZeRsx7Z7G9iQ9/PcjYj0wUTUnSoQ/K5lXN6IFe NKhA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=user-agent:in-reply-to:content-disposition:mime-version:references :message-id:subject:cc:to:from:date:arc-authentication-results; bh=T2fcPU5UOAxB8OkbCTq+PTQ4NpBstrtYyr0nQBjwoP4=; b=eyKlfTGyDp61owuIkNDn53OhifCq04ZAr9IBO7fynSseJGkgU6Kzhyfz1a7MrGObP2 Gn/rC8c1uHRGie66CfdyjYsEmGWDwNzSsj9z9x6NaUZ+z96SYx1WygJ6GF+o0qyH682H lDgDt1tPNo47EteYrEuXuY099SMWJhxBNHKemSUGhY4ztdYffaEiMwvTLHfao6oJD1YT EybKFxlmTpVgQnSRWN35uSTj1Njo0duSrEATHYMgrZoboLHbaP+5BJ7GH7UG8d0J/IuO QKu13XRXX5H0pkw/VLXwrb86qo71aRe0zyBrjPiQOteFsMcZhtl9tRt4UMXZYLAv+CvU SsGg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of bp@alien8.de designates 5.9.137.197 as permitted sender) smtp.mailfrom=bp@alien8.de Authentication-Results: mx.google.com; spf=pass (google.com: domain of bp@alien8.de designates 5.9.137.197 as permitted sender) smtp.mailfrom=bp@alien8.de Date: Mon, 30 Apr 2018 11:41:44 +0200 From: Borislav Petkov To: David Wang Cc: tony.luck@intel.com, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, gregkh@linuxfoundation.org, x86@kernel.org, linux-kernel@vger.kernel.org, linux-edac@vger.kernel.org, brucechang@via-alliance.com, cooperyan@zhaoxin.com, qiyuanwang@zhaoxin.com, benjaminpan@viatech.com, lukelin@viacpu.com, timguo@zhaoxin.com Subject: Re: [PATCH v3 1/2] x86/mce: new Centaur CPU support MCE broadcasting Message-ID: <20180430094144.GE6509@pd.tnic> References: <1524652420-17330-1-git-send-email-davidwang@zhaoxin.com> <1524652420-17330-2-git-send-email-davidwang@zhaoxin.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <1524652420-17330-2-git-send-email-davidwang@zhaoxin.com> User-Agent: Mutt/1.9.3 (2018-01-21) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1598713954943816107?= X-GMAIL-MSGID: =?utf-8?q?1599163691000951403?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On Wed, Apr 25, 2018 at 06:33:39PM +0800, David Wang wrote: > Newer Centaur multi-core CPU also support MCE broadcasting to all cores. But > no Centaur special code tell this truth to kernel. > > Signed-off-by: David Wang > --- > arch/x86/kernel/cpu/mcheck/mce.c | 19 +++++++++++++++++++ > 1 file changed, 19 insertions(+) I applied this with some minor improvements: --- From: David Wang Date: Wed, 25 Apr 2018 18:33:39 +0800 Subject: [PATCH] x86/MCA: Enable MCE broadcasting on new Centaur CPUs Newer Centaur multi-core CPUs also support MCE broadcasting to all cores. Add a Centaur-specific init function setting that up. [ bp: - make mce_centaur_feature_init() static - flip check to do the f/m/s first for better readability - touch up text ] Signed-off-by: David Wang Cc: Greg KH Cc: Tony Luck Cc: benjaminpan@viatech.com Cc: brucechang@via-alliance.com Cc: cooperyan@zhaoxin.com Cc: lukelin@viacpu.com Cc: qiyuanwang@zhaoxin.com Cc: timguo@zhaoxin.com Cc: x86-ml Cc: linux-edac Link: http://lkml.kernel.org/r/1524652420-17330-2-git-send-email-davidwang@zhaoxin.com Signed-off-by: Borislav Petkov --- arch/x86/kernel/cpu/mcheck/mce.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index 42cf2880d0ed..cd76380af79f 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -1727,6 +1727,21 @@ 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 __mcheck_cpu_init_vendor(struct cpuinfo_x86 *c) { switch (c->x86_vendor) { @@ -1739,6 +1754,9 @@ static void __mcheck_cpu_init_vendor(struct cpuinfo_x86 *c) mce_amd_feature_init(c); break; } + case X86_VENDOR_CENTAUR: + mce_centaur_feature_init(c); + break; default: break; -- 2.13.0 -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply.