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Tue, 05 May 2026 05:25:17 -0700 (PDT) Received: from hu-uchheda-hyd.qualcomm.com ([202.46.23.25]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-c7ffbbaac5bsm12597998a12.6.2026.05.05.05.25.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 05 May 2026 05:25:16 -0700 (PDT) From: Umang Chheda Date: Tue, 05 May 2026 17:53:48 +0530 Subject: [PATCH 4/8] ras: aest: Add panic_on_ue module parameter Precedence: bulk X-Mailing-List: linux-edac@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260505-aest-devicetree-support-v1-4-d5d6ffacf0a5@oss.qualcomm.com> References: <20260505-aest-devicetree-support-v1-0-d5d6ffacf0a5@oss.qualcomm.com> In-Reply-To: <20260505-aest-devicetree-support-v1-0-d5d6ffacf0a5@oss.qualcomm.com> To: Ruidong Tian , Tony Luck , Borislav Petkov , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , catalin.marinas@arm.com, will@kernel.org, lpieralisi@kernel.org, rafael@kernel.org, mark.rutland@arm.com, Sudeep Holla Cc: linux-arm-msm@vger.kernel.org, linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-edac@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-edac@vger.kernel.org, Umang Chheda X-Mailer: b4 0.15.1 X-Developer-Signature: v=1; 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There is no way for the user to suppress this behaviour, which makes it difficult to test UE injection or to run in environments where a kernel panic on every UE is undesirable. Add a module parameter `aest_panic_on_ue` When set to 0 the driver logs the UE and continues instead of panicking. Usage: # Boot time (kernel cmdline) aest.aest_panic_on_ue=0 # Runtime echo 0 > /sys/module/aest/parameters/aest_panic_on_ue Signed-off-by: Umang Chheda --- drivers/ras/aest/aest-core.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/ras/aest/aest-core.c b/drivers/ras/aest/aest-core.c index b4f4c975da1d..9ce782a66edf 100644 --- a/drivers/ras/aest/aest-core.c +++ b/drivers/ras/aest/aest-core.c @@ -22,6 +22,11 @@ DEFINE_PER_CPU(struct aest_device, percpu_adev); #undef pr_fmt #define pr_fmt(fmt) "AEST: " fmt +static bool aest_panic_on_ue; +module_param(aest_panic_on_ue, bool, 0644); +MODULE_PARM_DESC(aest_panic_on_ue, + "Panic on unrecoverable error: 0=off 1=on (default: 1)"); + #ifdef CONFIG_DEBUG_FS struct dentry *aest_debugfs; #endif @@ -342,9 +347,11 @@ void aest_proc_record(struct aest_record *record, void *data, bool fake) aest_record_info( record, "Simulated error! Skip panic due to fault injection\n"); - else + else if (aest_panic_on_ue) aest_panic(record, ®s, "AEST: unrecoverable error encountered"); + else + aest_record_err(record, "UE detected, panic suppressed\n"); } aest_log(record, ®s); -- 2.34.1