linux-kernel - [PATCH v5 09/21] acpi/ghes: add a notifier to notify when error data is ready

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Message-ID: <d37709f96acee4122055ee4ae44943756b087eef.1740653898.git.mchehab+huawei@kernel.org>
Date: Thu, 27 Feb 2025 12:03:39 +0100
From: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To: Igor Mammedov <imammedo@...hat.com>,
	"Michael S . Tsirkin" <mst@...hat.com>
Cc: Jonathan Cameron <Jonathan.Cameron@...wei.com>,
	Shiju Jose <shiju.jose@...wei.com>,
	qemu-arm@...gnu.org,
	qemu-devel@...gnu.org,
	Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
	Ani Sinha <anisinha@...hat.com>,
	Dongjiu Geng <gengdongjiu1@...il.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH v5 09/21] acpi/ghes: add a notifier to notify when error data is ready

Some error injection notify methods are async, like GPIO
notify. Add a notifier to be used when the error record is
ready to be sent to the guest OS.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
---
 hw/acpi/ghes.c         | 5 ++++-
 include/hw/acpi/ghes.h | 3 +++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/hw/acpi/ghes.c b/hw/acpi/ghes.c
index d1da16b3da2b..c3a64adfe5ed 100644
--- a/hw/acpi/ghes.c
+++ b/hw/acpi/ghes.c
@@ -510,6 +510,9 @@ static void get_ghes_source_offsets(uint16_t source_id,
     *read_ack_start_addr = le64_to_cpu(*read_ack_start_addr);
 }
 
+NotifierList acpi_generic_error_notifiers =
+    NOTIFIER_LIST_INITIALIZER(error_device_notifiers);
+
 void ghes_record_cper_errors(AcpiGhesState *ags, const void *cper, size_t len,
                              uint16_t source_id, Error **errp)
 {
@@ -550,7 +553,7 @@ void ghes_record_cper_errors(AcpiGhesState *ags, const void *cper, size_t len,
     /* Write the generic error data entry into guest memory */
     cpu_physical_memory_write(cper_addr, cper, len);
 
-    return;
+    notifier_list_notify(&acpi_generic_error_notifiers, NULL);
 }
 
 int acpi_ghes_memory_errors(AcpiGhesState *ags, uint16_t source_id,
diff --git a/include/hw/acpi/ghes.h b/include/hw/acpi/ghes.h
index 2f0c3288a860..bf9f3de27122 100644
--- a/include/hw/acpi/ghes.h
+++ b/include/hw/acpi/ghes.h
@@ -24,6 +24,9 @@
 
 #include "hw/acpi/bios-linker-loader.h"
 #include "qapi/error.h"
+#include "qemu/notify.h"
+
+extern NotifierList acpi_generic_error_notifiers;
 
 /*
  * Values for Hardware Error Notification Type field
-- 
2.48.1