[RFC PATCH 7/7] ACPI / APEI: Add reporting ARM64 CPU correctable errors to the CEC

[Shiju Jose]

Add reporting ARM64 CPU correctable errors to the RAS correctable
errors collector(CEC).

ARM processor error types are cache/TLB/bus errors.
Any of the above error types should not be consider for the
error collection and CPU core isolation?

Signed-off-by: Shiju Jose <shiju.j...@huawei.com>
---
 drivers/acpi/apei/ghes.c | 36 +++++++++++++++++++++++++++++++++---
 1 file changed, 33 insertions(+), 3 deletions(-)

diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index 81bf71b10d44..3cecb457d352 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -511,6 +511,38 @@ static void ghes_handle_aer(struct acpi_hest_generic_data 
*gdata)
 #endif
 }
 
+static void ghes_handle_arm_hw_error(struct acpi_hest_generic_data *gdata)
+{
+       struct cper_sec_proc_arm *err = acpi_hest_get_payload(gdata);
+       struct cper_arm_err_info *err_info;
+       int sec_sev;
+       int cpu, i, ret;
+
+       log_arm_hw_error(err);
+
+       sec_sev = ghes_severity(gdata->error_severity);
+       if (sec_sev != GHES_SEV_CORRECTED)
+               return;
+
+#if defined(CONFIG_ARM64)
+       cpu = get_logical_index(err->mpidr);
+       if (cpu == -EINVAL)
+               return;
+
+       /* ARM processor error types are cache/tlb/bus errors.
+        * Any of the above error types should not be consider for the
+        * error collection and CPU core isolation?
+        */
+       err_info = (struct cper_arm_err_info *)(err + 1);
+       for (i = 0; i < err->err_info_num; i++) {
+               ret = cec_cpu_add_elem(cpu, err_info->multiple_error + 1);
+               if (ret)
+                       break;
+               err_info += 1;
+       }
+#endif
+}
+
 static bool ghes_do_proc(struct ghes *ghes,
                         const struct acpi_hest_generic_status *estatus)
 {
@@ -543,9 +575,7 @@ static bool ghes_do_proc(struct ghes *ghes,
                        ghes_handle_aer(gdata);
                }
                else if (guid_equal(sec_type, &CPER_SEC_PROC_ARM)) {
-                       struct cper_sec_proc_arm *err = 
acpi_hest_get_payload(gdata);
-
-                       log_arm_hw_error(err);
+                       ghes_handle_arm_hw_error(gdata);
                } else {
                        void *err = acpi_hest_get_payload(gdata);
 
-- 
2.17.1