[RFC,v1,3/3] arm64/apei: get error address from memory section for recovery

Commit Message

Xie XiuQi Sept. 1, 2017, 10:32 a.m. UTC

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 <[e-mail]>
---
 arch/arm64/kernel/ras.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

Patch

diff --git a/arch/arm64/kernel/ras.c b/arch/arm64/kernel/ras.c
index 8562ec7..2b400b8 100644
--- a/arch/arm64/kernel/ras.c
+++ b/arch/arm64/kernel/ras.c
@@ -136,3 +136,20 @@  void arm_proc_error_check(struct ghes *ghes, struct cper_sec_proc_arm *err)
 	if (!ret)
 		set_thread_flag(TIF_SEA_NOTIFY);
 }
+
+void arch_apei_report_mem_error(struct ghes *ghes, int sev,
+				struct cper_sec_mem_err *mem)
+{
+	int ret = -1;
+
+	if ((ghes->generic->notify.type != ACPI_HEST_NOTIFY_SEA) ||
+	    (ghes->estatus->error_severity != CPER_SEV_RECOVERABLE))
+		return;
+
+	if (mem->validation_bits & CPER_MEM_VALID_PA) {
+		ret = sea_save_info(mem->physical_addr);
+	}
+
+	if (!ret)
+		set_thread_flag(TIF_SEA_NOTIFY);
+}