linux-kernel - [PATCH] ACPI: APEI: EINJ: Add CXL error types

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Date:   Mon, 13 Mar 2023 17:46:11 -0700
From:   Tony Luck <tony.luck@...el.com>
To:     "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
Cc:     Borislav Petkov <bp@...en8.de>, x86@...nel.org,
        linux-acpi@...r.kernel.org, linux-cxl@...r.kernel.org,
        linux-kernel@...r.kernel.org, patches@...ts.linux.dev,
        Tony Luck <tony.luck@...el.com>
Subject: [PATCH] ACPI: APEI: EINJ: Add CXL error types

ACPI 6.5 added six new error types for CXL. See chapter 18
table 18.30.

Add strings for the new types so that Linux will list them in the
/sys/kernel/debug/apei/einj/available_error_types file.

It seems no other changes are needed. Linux already accepts
the CXL codes (on a BIOS that advertises them).

Signed-off-by: Tony Luck <tony.luck@...el.com>
---
 drivers/acpi/apei/einj.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/acpi/apei/einj.c b/drivers/acpi/apei/einj.c
index b4373e575660..39bee5a067cc 100644
--- a/drivers/acpi/apei/einj.c
+++ b/drivers/acpi/apei/einj.c
@@ -584,6 +584,12 @@ static const char * const einj_error_type_string[] = {
 	"0x00000200\tPlatform Correctable\n",
 	"0x00000400\tPlatform Uncorrectable non-fatal\n",
 	"0x00000800\tPlatform Uncorrectable fatal\n",
+	"0x00001000\tCXL.cache Protocol Correctable\n",
+	"0x00002000\tCXL.cache Protocol Uncorrectable non-fatal\n",
+	"0x00004000\tCXL.cache Protocol Uncorrectable fatal\n",
+	"0x00008000\tCXL.mem Protocol Correctable\n",
+	"0x00010000\tCXL.mem Protocol Uncorrectable non-fatal\n",
+	"0x00020000\tCXL.mem Protocol Uncorrectable fatal\n",
 };
 
 static int available_error_type_show(struct seq_file *m, void *v)
-- 
2.39.2