linux-kernel - Re: [PATCH] x86/pti: Fix !PCID and sanitize defines

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Date:   Tue, 16 Jan 2018 16:59:37 +0100 (CET)
From:   Jiri Kosina <jikos@...nel.org>
To:     Ingo Molnar <mingo@...nel.org>
cc:     Laura Abbott <labbott@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Andy Lutomirski <luto@...nel.org>, Willy Tarreau <w@....eu>,
        Peter Zijlstra <peterz@...radead.org>,
        Borislav Petkov <bp@...en8.de>, X86 ML <x86@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        David Woodhouse <dwmw@...zon.co.uk>,
        stable <stable@...r.kernel.org>
Subject: Re: [PATCH] x86/pti: Fix !PCID and sanitize defines

On Tue, 16 Jan 2018, Ingo Molnar wrote:

> Thanks for the confirmation. Now the fix is upstream and Greg queued it 
> up as well earlier today, so this fix is part of the next -stable 
> iteration as well.

Greg, please note that you need this only for the 4.14-stable.

4.4-stable and 4.9-stable already do the right thing (always or-ing 0 into 
CR3 on non-PCID systems) due to the way how x86_cr3_pcid_user handling is 
done.

-- 
Jiri Kosina
SUSE Labs