In some platform, when SEA triggerred, physical address might be
reported by memory section, so we save it for error recovery later.
Signed-off-by: Xie XiuQi <xiexiuqi@xxxxxxxxxx>
Tested-by: Wang Xiongfeng <wangxiongfeng2@xxxxxxxxxx>
---
arch/arm64/kernel/ras.c | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/arch/arm64/kernel/ras.c b/arch/arm64/kernel/ras.c
index 5710b2e..8a44c01 100644
--- a/arch/arm64/kernel/ras.c
+++ b/arch/arm64/kernel/ras.c
@@ -141,3 +141,34 @@ void arm_process_error(struct ghes *ghes, struct cper_sec_proc_arm *err)
set_thread_flag(TIF_SEA_NOTIFY);
}
+int ghes_mem_err_callback(struct notifier_block *nb, unsigned long val, void *data)
+{
+ bool info_saved = false;
+ struct ghes_mem_err *ghes_mem = (struct ghes_mem_err *)data;
+ struct cper_sec_mem_err *mem_err = ghes_mem->mem_err;
+
+ if ((ghes_mem->notify_type != ACPI_HEST_NOTIFY_SEA) ||
+ (ghes_mem->severity != CPER_SEV_RECOVERABLE))
+ return 0;
+
+ if (mem_err->validation_bits & CPER_MEM_VALID_PA) {
+ info_saved = sea_save_info(mem_err->physical_addr);
+ }
+
+ if (info_saved)
+ set_thread_flag(TIF_SEA_NOTIFY);
+
+ return 0;
+}
+
+static struct notifier_block ghes_mem_err_nb = {
+ .notifier_call = ghes_mem_err_callback,
+};
+
+static int arm64_err_recov_init(void)
+{
+ atomic_notifier_chain_register(&ghes_mem_err_chain, &ghes_mem_err_nb);
+ return 0;
+}
+
+late_initcall(arm64_err_recov_init);
--
1.8.3.1
--
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