linux-kernel - Re: [RFC PATCH v1 01/18] x86: Set the write-protect cache mode for AMD processors

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Message-ID: <20160427153158.GJ21011@pd.tnic>
Date:	Wed, 27 Apr 2016 17:31:58 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Andy Lutomirski <luto@...capital.net>
Cc:	Tom Lendacky <thomas.lendacky@....com>,
	linux-arch <linux-arch@...r.kernel.org>,
	"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
	kvm list <kvm@...r.kernel.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	X86 ML <x86@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	kasan-dev <kasan-dev@...glegroups.com>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	iommu@...ts.linux-foundation.org,
	Radim Krčmář <rkrcmar@...hat.com>,
	Arnd Bergmann <arnd@...db.de>,
	Jonathan Corbet <corbet@....net>,
	Matt Fleming <matt@...eblueprint.co.uk>,
	Joerg Roedel <joro@...tes.org>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Paolo Bonzini <pbonzini@...hat.com>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrey Ryabinin <aryabinin@...tuozzo.com>,
	Alexander Potapenko <glider@...gle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Dmitry Vyukov <dvyukov@...gle.com>
Subject: Re: [RFC PATCH v1 01/18] x86: Set the write-protect cache mode for
 AMD processors

On Wed, Apr 27, 2016 at 08:12:56AM -0700, Andy Lutomirski wrote:
> I think there are some errata

Isn't that addressed by the first branch of the if-test in pat_init():

        if ((c->x86_vendor == X86_VENDOR_INTEL) &&
            (((c->x86 == 0x6) && (c->x86_model <= 0xd)) ||
             ((c->x86 == 0xf) && (c->x86_model <= 0x6)))) {


-- 
Regards/Gruss,
    Boris.

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