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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 2/4] arm64: mm: Add RAS extension system register check to SEA handling
Date: Tue, 2 Jul 2019 16:51:46 +0000	[thread overview]
Message-ID: <1562086280-5351-3-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, synchronous external
abort syndrome information could be captured in the core's RAS extension
system registers. So, when handling SEAs check the RAS system registers
for error syndrome information.

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

diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
index 2d11501..76b42ca 100644
--- a/arch/arm64/mm/fault.c
+++ b/arch/arm64/mm/fault.c
@@ -37,6 +37,7 @@
 #include <asm/pgtable.h>
 #include <asm/tlbflush.h>
 #include <asm/traps.h>
+#include <asm/ras.h>
 
 struct fault_info {
 	int	(*fn)(unsigned long addr, unsigned int esr,
@@ -632,6 +633,8 @@ static int do_sea(unsigned long addr, unsigned int esr, struct pt_regs *regs)
 
 	inf = esr_to_fault_info(esr);
 
+	arch_arm_ras_report_error();
+
 	/*
 	 * Return value ignored as we rely on signal merging.
 	 * Future patches will make this more robust.
-- 
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 2/4] arm64: mm: Add RAS extension system register check to SEA handling
Date: Tue, 2 Jul 2019 16:51:46 +0000	[thread overview]
Message-ID: <1562086280-5351-3-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, synchronous external
abort syndrome information could be captured in the core's RAS extension
system registers. So, when handling SEAs check the RAS system registers
for error syndrome information.

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

diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
index 2d11501..76b42ca 100644
--- a/arch/arm64/mm/fault.c
+++ b/arch/arm64/mm/fault.c
@@ -37,6 +37,7 @@
 #include <asm/pgtable.h>
 #include <asm/tlbflush.h>
 #include <asm/traps.h>
+#include <asm/ras.h>
 
 struct fault_info {
 	int	(*fn)(unsigned long addr, unsigned int esr,
@@ -632,6 +633,8 @@ static int do_sea(unsigned long addr, unsigned int esr, struct pt_regs *regs)
 
 	inf = esr_to_fault_info(esr);
 
+	arch_arm_ras_report_error();
+
 	/*
 	 * Return value ignored as we rely on signal merging.
 	 * Future patches will make this more robust.
-- 
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 ` Tyler Baicar OS [this message]
2019-07-02 16:51   ` [PATCH RFC 2/4] arm64: mm: Add RAS extension system register check to SEA handling Tyler Baicar OS
2019-07-08 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 ` [PATCH RFC 3/4] arm64: traps: Add RAS extension system register check to serror handling Tyler Baicar OS
2019-07-02 16:51   ` 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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