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Date: Sat, 21 Apr 2018 11:03:45 +0200
From: Borislav Petkov <bp@suse.de>
Subject: [MODERATED] Re: [patch 07/11] [PATCH v2 07/10] Linux Patch #7
Message-ID: <20180421090345.GA18575@pd.tnic>
References: <20180420022613.270943302@localhost.localdomain>
 <20180420174242.GO13977@pd.tnic>
 <20180421032701.GA4490@localhost.localdomain>
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To: speck@linutronix.de
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On Fri, Apr 20, 2018 at 11:27:07PM -0400, speck for Konrad Rzeszutek Wilk wro=
te:
> Adding this:
> diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
> index e207eb2e8011..6a800a71b6c0 100644
> --- a/arch/x86/kernel/cpu/amd.c
> +++ b/arch/x86/kernel/cpu/amd.c
> @@ -676,6 +676,15 @@ static void early_init_amd(struct cpuinfo_x86 *c)
>                 set_cpu_bug(c, X86_BUG_AMD_E400);
> =20
>         early_detect_mem_encrypt(c);
> +
> +       switch (c->x86) {
> +       case 0x15:
> +       case 0x16:
> +       case 0x17:
> +               if (!rdmsrl_safe(MSR_AMD64_LS_CFG, &msr_MSR_AMD64_LS_CFG_va=
l))
> +                       set_cpu_cap(c, X86_FEATURE_MDD);

	if (c->x86 >=3D 0x15 && c->x86 <=3D 0x17)
		set_cpu_cap(c, X86_FEATURE_MDD);

is enough.

--=20
Regards/Gruss,
    Boris.

SUSE Linux GmbH, GF: Felix Imend=C3=B6rffer, Jane Smithard, Graham Norton, HR=
B 21284 (AG N=C3=BCrnberg)
--=20