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

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Message-ID: <b7a0b5c0-61a0-9843-09a6-3c4c606221be@intel.com>
Date:   Thu, 16 Mar 2023 13:26:20 -0700
From:   Dave Jiang <dave.jiang@...el.com>
To:     Tony Luck <tony.luck@...el.com>,
        "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
Subject: Re: [PATCH] ACPI: APEI: EINJ: Add CXL error types



On 3/13/23 5:46 PM, 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: Dave Jiang <dave.jiang@...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)