linux-kernel - Re: [PATCH 00/33] x86 FPU fixes and cleanups for v4.14

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Message-ID: <20170923130256.htmtonhlqt6j5hrj@gmail.com>
Date:   Sat, 23 Sep 2017 15:02:56 +0200
From:   Ingo Molnar <mingo@...nel.org>
To:     linux-kernel@...r.kernel.org
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Eric Biggers <ebiggers3@...il.com>,
        Andy Lutomirski <luto@...capital.net>,
        Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Fenghua Yu <fenghua.yu@...el.com>,
        "H . Peter Anvin" <hpa@...or.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Oleg Nesterov <oleg@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Rik van Riel <riel@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Yu-cheng Yu <yu-cheng.yu@...el.com>
Subject: Re: [PATCH 00/33] x86 FPU fixes and cleanups for v4.14


* Ingo Molnar <mingo@...nel.org> wrote:

> So I'd like to push these changes to Linus tomorrow-ish as an RFC pull
> request in 1-2 days, because there's now 4 fixes depending on these
> changes, and because the result will be more maintainable for the
> LTS v4.14 kernel.
> 
> The biggest changes from the earlier iterations is the fixes from
> Eric Biggers for information leaks, plus more cleanups. I have also
> removed the change that Peter Zijlstra and others felt uneasy about,
> the ::last_cpu -> ::fpregs_cached change to the state machine. This
> should make the changes uncontroversial.
> 
> Due to taking out that patch I had to rebase the changes, most of which
> have accrued months of testing in linux-next. So I'm pretty confident
> about the overall stability of it. (Famous last words.)

I forgot to mention that these changes are also available in tip:master
(and tip:WIP.x86/fpu), at:

  git git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip.git master

Thanks,

	Ingo