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

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Date:   Thu, 16 Mar 2023 12:54:26 -0700
From:   Davidlohr Bueso <dave@...olabs.net>
To:     Tony Luck <tony.luck@...el.com>
Cc:     "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        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
Subject: Re: [PATCH] ACPI: APEI: EINJ: Add CXL error types

On Mon, 13 Mar 2023, Tony Luck wrote:

>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>

Reviewed-by: Davidlohr Bueso <dave@...olabs.net>

>---
> 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
>