linux-kernel - Re: [PATCH] x86, microcode, AMD: Add support for family 16h processors

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Date:	Thu, 15 Nov 2012 18:45:03 -0200
From:	Henrique de Moraes Holschuh <hmh@....eng.br>
To:	Boris Ostrovsky <boris.ostrovsky@....com>
Cc:	hpa@...or.com, mingo@...e.hu, tglx@...utronix.de,
	herrmann.der.user@...glemail.com, bp@...en8.de,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86, microcode, AMD: Add support for family 16h
 processors

On Thu, 15 Nov 2012, Boris Ostrovsky wrote:
> Add valid patch size for family 16h processors
> 
> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@....com>

Is this something that needs to go to -stable ?

>  #define F1XH_MPB_MAX_SIZE 2048
>  #define F14H_MPB_MAX_SIZE 1824
>  #define F15H_MPB_MAX_SIZE 4096
> +#define F16H_MPB_MAX_SIZE 3458
>  
>  	switch (c->x86) {
>  	case 0x14:
> @@ -198,6 +199,9 @@ static unsigned int verify_patch_size(int cpu, u32 patch_size,
>  	case 0x15:
>  		max_size = F15H_MPB_MAX_SIZE;
>  		break;
> +	case 0x16:
> +		max_size = F16H_MPB_MAX_SIZE;
> +		break;
>  	default:
>  		max_size = F1XH_MPB_MAX_SIZE;
>  		break;

Because it looks like without this patch, some valid microcode updates
would be rejected by the kernel...

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh
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