Re: [PATCH 1/2] x86/mce: new centaur CPUs support MCE broadcasting

[Borislav Petkov <bp@alien8.de>]

On Fri, Mar 30, 2018 at 05:53:41PM +0800, David Wang wrote:
> This patch is used to tell the kernel that newer Centaur CPU support MCE
> broadcasting.
> 
> Signed-off-by: David Wang <davidwang@zhaoxin.com>
> ---
>  arch/x86/kernel/cpu/mcheck/mce.c | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
> index 7065846..82b25e1 100644
> --- a/arch/x86/kernel/cpu/mcheck/mce.c
> +++ b/arch/x86/kernel/cpu/mcheck/mce.c
> @@ -1688,6 +1688,17 @@ static int __mcheck_cpu_apply_quirks(struct cpuinfo_x86 *c)
>  		if (c->x86 == 6 && c->x86_model == 45)
>  			quirk_no_way_out = quirk_sandybridge_ifu;
>  	}
> +
> +	if (c->x86_vendor == X86_VENDOR_CENTAUR) {
> +		/*
> +		 * All newer centaur CPUs support MCE broadcasting. Enable
> +		 * synchronization with a one second timeout.
> +		 */
> +		if ((c->x86 > 6 || (c->x86 == 6 && c->x86_model == 0xf && c->x86_mask >=0xe)) &&

Are some specs or manuals available somewhere on the web for those?

Thx.

-- 
Regards/Gruss,
    Boris.

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