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From: Tyler Baicar OS <baicar@os.amperecomputing.com>
To: Open Source Submission <patches@amperecomputing.com>,
	"linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
	"linux-edac@vger.kernel.org" <linux-edac@vger.kernel.org>,
	"james.morse@arm.com" <james.morse@arm.com>,
	"catalin.marinas@arm.com" <catalin.marinas@arm.com>,
	"will@kernel.org" <will@kernel.org>,
	"lorenzo.pieralisi@arm.com" <lorenzo.pieralisi@arm.com>,
	"guohanjun@huawei.com" <guohanjun@huawei.com>,
	"sudeep.holla@arm.com" <sudeep.holla@arm.com>,
	"rjw@rjwysocki.net" <rjw@rjwysocki.net>,
	"lenb@kernel.org" <lenb@kernel.org>,
	"mark.rutland@arm.com" <mark.rutland@arm.com>,
	"tony.luck@intel.com" <tony.luck@intel.com>,
	"bp@alien8.de" <bp@alien8.de>,
	"Matteo.Carlini@arm.com" <Matteo.Carlini@arm.com>,
	"Andrew.Murray@arm.com" <Andrew.Murray@arm.com>
Cc: Tyler Baicar OS <baicar@os.amperecomputing.com>
Subject: [PATCH RFC 3/4] arm64: traps: Add RAS extension system register check to serror handling
Date: Tue, 2 Jul 2019 16:51:52 +0000	[thread overview]
Message-ID: <1562086280-5351-4-git-send-email-baicar@os.amperecomputing.com> (raw)
In-Reply-To: <1562086280-5351-1-git-send-email-baicar@os.amperecomputing.com>

On systems that support the ARM RAS extension, serror interrupt syndrome
information could be captured in the core's RAS extension system
registers. When handling serrors, check the RAS system registers for
error syndrome information.

Signed-off-by: Tyler Baicar <baicar@os.amperecomputing.com>
---
 arch/arm64/kernel/traps.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c
index 985721a..aacfa51 100644
--- a/arch/arm64/kernel/traps.c
+++ b/arch/arm64/kernel/traps.c
@@ -40,6 +40,7 @@
 #include <asm/exception.h>
 #include <asm/system_misc.h>
 #include <asm/sysreg.h>
+#include <asm/ras.h>
 
 static const char *handler[]= {
 	"Synchronous Abort",
@@ -897,6 +898,8 @@ asmlinkage void do_serror(struct pt_regs *regs, unsigned int esr)
 	if (!was_in_nmi)
 		nmi_enter();
 
+	arch_arm_ras_report_error();
+
 	/* non-RAS errors are not containable */
 	if (!arm64_is_ras_serror(esr) || arm64_is_fatal_ras_serror(regs, esr))
 		arm64_serror_panic(regs, esr);
-- 
1.8.3.1


WARNING: multiple messages have this Message-ID (diff)
From: Tyler Baicar OS <baicar@os.amperecomputing.com>
To: Open Source Submission <patches@amperecomputing.com>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
	"linux-edac@vger.kernel.org" <linux-edac@vger.kernel.org>,
	"james.morse@arm.com" <james.morse@arm.com>,
	"catalin.marinas@arm.com" <catalin.marinas@arm.com>,
	"will@kernel.org" <will@kernel.org>,
	"lorenzo.pieralisi@arm.com" <lorenzo.pieralisi@arm.com>,
	"guohanjun@huawei.com" <guohanjun@huawei.com>,
	"sudeep.holla@arm.com" <sudeep.holla@arm.com>,
	"rjw@rjwysocki.net" <rjw@rjwysocki.net>,
	"lenb@kernel.org" <lenb@kernel.org>,
	"mark.rutland@arm.com" <mark.rutland@arm.com>,
	"tony.luck@intel.com" <tony.luck@intel.com>,
	"bp@alien8.de" <bp@alien8.de>,
	"Matteo.Carlini@arm.com" <Matteo.Carlini@arm.com>,
	"Andrew.Murray@arm.com" <Andrew.Murray@arm.com>
Cc: Tyler Baicar OS <baicar@os.amperecomputing.com>
Subject: [PATCH RFC 3/4] arm64: traps: Add RAS extension system register check to serror handling
Date: Tue, 2 Jul 2019 16:51:52 +0000	[thread overview]
Message-ID: <1562086280-5351-4-git-send-email-baicar@os.amperecomputing.com> (raw)
In-Reply-To: <1562086280-5351-1-git-send-email-baicar@os.amperecomputing.com>

On systems that support the ARM RAS extension, serror interrupt syndrome
information could be captured in the core's RAS extension system
registers. When handling serrors, check the RAS system registers for
error syndrome information.

Signed-off-by: Tyler Baicar <baicar@os.amperecomputing.com>
---
 arch/arm64/kernel/traps.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c
index 985721a..aacfa51 100644
--- a/arch/arm64/kernel/traps.c
+++ b/arch/arm64/kernel/traps.c
@@ -40,6 +40,7 @@
 #include <asm/exception.h>
 #include <asm/system_misc.h>
 #include <asm/sysreg.h>
+#include <asm/ras.h>
 
 static const char *handler[]= {
 	"Synchronous Abort",
@@ -897,6 +898,8 @@ asmlinkage void do_serror(struct pt_regs *regs, unsigned int esr)
 	if (!was_in_nmi)
 		nmi_enter();
 
+	arch_arm_ras_report_error();
+
 	/* non-RAS errors are not containable */
 	if (!arm64_is_ras_serror(esr) || arm64_is_fatal_ras_serror(regs, esr))
 		arm64_serror_panic(regs, esr);
-- 
1.8.3.1


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2019-07-02 16:51 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-02 16:51 [PATCH RFC 0/4] ARM Error Source Table Support Tyler Baicar OS
2019-07-02 16:51 ` Tyler Baicar OS
2019-07-02 16:51 ` [PATCH RFC 1/4] ACPI/AEST: Initial AEST driver Tyler Baicar OS
2019-07-02 16:51   ` Tyler Baicar OS
2019-07-03  9:25   ` Andrew Murray
2019-07-03  9:25     ` Andrew Murray
2019-07-03 17:30     ` Tyler Baicar OS
2019-07-03 17:30       ` Tyler Baicar OS
2019-07-04  9:05       ` Andrew Murray
2019-07-04  9:05         ` Andrew Murray
2019-07-04 16:02   ` Shiju Jose
2019-07-04 16:02     ` Shiju Jose
2019-07-10  0:49     ` Tyler Baicar OS
2019-07-10  0:49       ` Tyler Baicar OS
2019-07-02 16:51 ` [PATCH RFC 2/4] arm64: mm: Add RAS extension system register check to SEA handling Tyler Baicar OS
2019-07-02 16:51   ` Tyler Baicar OS
2019-07-08 10:00   ` James Morse
2019-07-08 10:00     ` James Morse
2019-07-10  0:51     ` Tyler Baicar OS
2019-07-10  0:51       ` Tyler Baicar OS
2019-07-11  4:14       ` Tyler Baicar OS
2019-07-11  4:14         ` Tyler Baicar OS
2019-07-17 17:41         ` James Morse
2019-07-17 17:41           ` James Morse
2019-07-02 16:51 ` Tyler Baicar OS [this message]
2019-07-02 16:51   ` [PATCH RFC 3/4] arm64: traps: Add RAS extension system register check to serror handling Tyler Baicar OS
2019-07-02 16:52 ` [PATCH RFC 4/4] trace, ras: add ARM RAS extension trace event Tyler Baicar OS
2019-07-02 16:52   ` Tyler Baicar OS

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