linux-kernel - Re: [PATCH v3 2/3] EDAC/mce_amd: Extract node id from MCA

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Date:   Fri, 27 Aug 2021 12:24:29 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Naveen Krishna Chatradhi <nchatrad@....com>
Cc:     linux-edac@...r.kernel.org, x86@...nel.org,
        linux-kernel@...r.kernel.org, mchehab@...nel.org,
        Yazen.Ghannam@....com, Muralidhara M K <muralimk@....com>
Subject: Re: [PATCH v3 2/3] EDAC/mce_amd: Extract node id from MCA_IPID

On Tue, Aug 24, 2021 at 12:24:36AM +0530, Naveen Krishna Chatradhi wrote:
> On SMCA banks of the NONCPU nodes, the node id information is
> available in MCA_IPID[47:44](InstanceIdHi).
> 
> Signed-off-by: Muralidhara M K <muralimk@....com>
> Signed-off-by: Naveen Krishna Chatradhi <nchatrad@....com>
> Reviewed-by: Yazen Ghannam <yazen.ghannam@....com>
> ---
> Changes since v2:
> 1. Modified subject and commit message
> 2. Added Reviewed by Yazen Ghannam
> 
>  drivers/edac/mce_amd.c | 19 +++++++++++++++++--
>  1 file changed, 17 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/edac/mce_amd.c b/drivers/edac/mce_amd.c
> index 27d56920b469..1398032ba25a 100644
> --- a/drivers/edac/mce_amd.c
> +++ b/drivers/edac/mce_amd.c
> @@ -1072,8 +1072,23 @@ static void decode_smca_error(struct mce *m)
>  	if (xec < smca_mce_descs[bank_type].num_descs)
>  		pr_cont(", %s.\n", smca_mce_descs[bank_type].descs[xec]);
>  
> -	if (bank_type == SMCA_UMC && xec == 0 && decode_dram_ecc)
> -		decode_dram_ecc(topology_die_id(m->extcpu), m);
> +	if (xec == 0 && decode_dram_ecc) {
> +		int node_id = 0;
> +
> +		if (bank_type == SMCA_UMC) {
> +			node_id = topology_die_id(m->extcpu);
> +		} else if (bank_type == SMCA_UMC_V2) {
> +			/*
> +			 * SMCA_UMC_V2 is used on the noncpu nodes, extract

Above "NONCPU", here "noncpu", I don't like that "noncpu" nomenclature.
I wonder if we can do without it...

-- 
Regards/Gruss,
    Boris.

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