linux-kernel - Re: [PATCH v2 10/22] EDAC/amd64: Merge struct amd64_family_type into struct amd64

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Date:   Sat, 18 Mar 2023 16:39:42 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Yazen Ghannam <yazen.ghannam@....com>
Cc:     linux-edac@...r.kernel.org, linux-kernel@...r.kernel.org,
        muralidhara.mk@....com, naveenkrishna.chatradhi@....com
Subject: Re: [PATCH v2 10/22] EDAC/amd64: Merge struct amd64_family_type into
 struct amd64_pvt

On Fri, Jan 27, 2023 at 05:04:07PM +0000, Yazen Ghannam wrote:
> From: Muralidhara M K <muralidhara.mk@....com>
> 
> Future AMD systems will support heterogeneous "AMD Node" types, e.g.
> CPU+GPU. Therefore, a global "family type" shared across all "AMD Nodes"

"CPU and GPU types."

...

> +static int per_family_init(struct amd64_pvt *pvt)
>  {
>  	pvt->ext_model  = boot_cpu_data.x86_model >> 4;
>  	pvt->stepping	= boot_cpu_data.x86_stepping;
>  	pvt->model	= boot_cpu_data.x86_model;
>  	pvt->fam	= boot_cpu_data.x86;
> +	pvt->max_mcs	= 2;
> +
> +	/*
> +	 * Decide on which ops group to use here and do any family/model
> +	 * overrides below.
> +	 */
> +	if (pvt->fam >= 0x17)
> +		pvt->ops = &umc_ops;
> +	else
> +		pvt->ops = &dct_ops;
>  
>  	switch (pvt->fam) {
>  	case 0xf:
> -		fam_type	= &family_types[K8_CPUS];
> -		pvt->ops	= &family_types[K8_CPUS].ops;
> +		pvt->ctl_name				= (pvt->ext_model > K8_REV_F) ?

The original test is >=

-	amd64_info("%s %sdetected (node %d).\n", fam_type->ctl_name,
-		     (pvt->fam == 0xf ?
-				(pvt->ext_model >= K8_REV_F  ? "revF or later "
						^^^^^


-							     : "revE or earlier ")

> +							  "K8 revF or later" : "K8 revE or earlier";
> +		pvt->f1_id				= PCI_DEVICE_ID_AMD_K8_NB_ADDRMAP;
> +		pvt->f2_id				= PCI_DEVICE_ID_AMD_K8_NB_MEMCTL;
> +		pvt->ops->map_sysaddr_to_csrow		= k8_map_sysaddr_to_csrow;
> +		pvt->ops->dbam_to_cs			= k8_dbam_to_chip_select;
>  		break;

-- 
Regards/Gruss,
    Boris.

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