linux-kernel - Re: [PATCH v4 6/7] x86/cpufeature: Blacklist SPEC

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Message-ID: <1516876994.30244.51.camel@infradead.org>
Date:   Thu, 25 Jan 2018 10:43:14 +0000
From:   David Woodhouse <dwmw2@...radead.org>
To:     arjan@...ux.intel.com, tglx@...utronix.de, karahmed@...zon.de,
        x86@...nel.org, linux-kernel@...r.kernel.org,
        tim.c.chen@...ux.intel.com, bp@...en8.de, peterz@...radead.org,
        pbonzini@...hat.com, ak@...ux.intel.com,
        torvalds@...ux-foundation.org, gregkh@...ux-foundation.org,
        dave.hansen@...el.com, gnomes@...rguk.ukuu.org.uk,
        ashok.raj@...el.com, mingo@...nel.org
Subject: Re: [PATCH v4 6/7] x86/cpufeature: Blacklist SPEC_CTRL on early
 Spectre v2 microcodes

On Thu, 2018-01-25 at 09:23 +0000, David Woodhouse wrote:
> 
> +/*
> + * Early microcode releases for the Spectre v2 mitigation were broken.
> + * Information taken from;
> + * • https://newsroom.intel.com/wp-content/uploads/sites/11/2018/01/microcode-update-guidance.pdf

Oh look, Intel have released a *third* version of that document
already, and they've bumped the bad Kabylake versions to 0x84, although
they're *still* missing out the KBL 906EA SKU which was updated to 0x80
in the public 20180108 microcode release. I'll bump them all in my tree
to 0x84.

Thomas, want another copy in email now, or were we waiting for another
round of these before you merge them anyway?
Download attachment "smime.p7s" of type "application/x-pkcs7-signature" (5213 bytes)