linux-kernel - Re: [PATCH v3 4.4.y 1/3] x86/fpu: Remove use_eager

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Date:   Thu, 11 Oct 2018 17:10:52 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Daniel Sangorrin <daniel.sangorrin@...hiba.co.jp>
Cc:     stable@...r.kernel.org, Andy Lutomirski <luto@...nel.org>,
        Rik van Riel <riel@...hat.com>,
        Borislav Petkov <bp@...en8.de>,
        Brian Gerst <brgerst@...il.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Denys Vlasenko <dvlasenk@...hat.com>,
        Fenghua Yu <fenghua.yu@...el.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Oleg Nesterov <oleg@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Quentin Casasnovas <quentin.casasnovas@...cle.com>,
        Thomas Gleixner <tglx@...utronix.de>, pbonzini@...hat.com,
        Ingo Molnar <mingo@...nel.org>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
        Gleb Natapov <gleb@...nel.org>,
        yu-cheng yu <yu-cheng.yu@...el.com>,
        Kees Cook <keescook@...omium.org>,
        Eric Biggers <ebiggers@...gle.com>,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org
Subject: Re: [PATCH v3 4.4.y 1/3] x86/fpu: Remove use_eager_fpu()

On Wed, Jul 11, 2018 at 09:48:38AM +0900, Daniel Sangorrin wrote:
> From: Andy Lutomirski <luto@...nel.org>
> 
> commit c592b57347069abfc0dcad3b3a302cf882602597 upstream
> 
> This removes all the obvious code paths that depend on lazy FPU mode.
> It shouldn't change the generated code at all.
> 
> Signed-off-by: Andy Lutomirski <luto@...nel.org>
> Signed-off-by: Rik van Riel <riel@...hat.com>
> Cc: Borislav Petkov <bp@...en8.de>
> Cc: Brian Gerst <brgerst@...il.com>
> Cc: Dave Hansen <dave.hansen@...ux.intel.com>
> Cc: Denys Vlasenko <dvlasenk@...hat.com>
> Cc: Fenghua Yu <fenghua.yu@...el.com>
> Cc: H. Peter Anvin <hpa@...or.com>
> Cc: Josh Poimboeuf <jpoimboe@...hat.com>
> Cc: Linus Torvalds <torvalds@...ux-foundation.org>
> Cc: Oleg Nesterov <oleg@...hat.com>
> Cc: Peter Zijlstra <peterz@...radead.org>
> Cc: Quentin Casasnovas <quentin.casasnovas@...cle.com>
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: pbonzini@...hat.com
> Link: http://lkml.kernel.org/r/1475627678-20788-5-git-send-email-riel@redhat.com
> Signed-off-by: Ingo Molnar <mingo@...nel.org>
> Signed-off-by: Daniel Sangorrin <daniel.sangorrin@...hiba.co.jp>
> ---
>  arch/x86/crypto/crc32c-intel_glue.c | 17 ++++-------------
>  arch/x86/include/asm/fpu/internal.h | 34 +--------------------------------
>  arch/x86/kernel/fpu/core.c          | 38 +++++--------------------------------
>  arch/x86/kernel/fpu/signal.c        |  8 +++-----
>  arch/x86/kvm/cpuid.c                |  4 +---
>  arch/x86/kvm/x86.c                  | 10 ----------
>  6 files changed, 14 insertions(+), 97 deletions(-)

This does not apply to the current 4.4.y tree.  Can you rebase this
series and resend it?

thanks,

greg k-h