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Date: Wed, 9 Mar 2016 09:19:39 -0800
From: Yu-cheng Yu <yu-cheng.yu@intel.com>
To: Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org, x86@kernel.org,
        "H. Peter Anvin" <hpa@zytor.com>, Thomas Gleixner <tglx@linutronix.de>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@suse.de>,
        Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>,
        "Ravi V. Shankar" <ravi.v.shankar@intel.com>,
        Leonid Shatz <leonid.shatz@ravellosystems.com>,
        Fenghua Yu <fenghua.yu@intel.com>, Andy Lutomirski <luto@kernel.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [PATCH] x86/fpu: Revert earlier patch of Disable AVX when
 eagerfpu is off
Message-ID: <20160309171938.GA15503@test-lenovo>
References: <1453511438-25827-1-git-send-email-yu-cheng.yu@intel.com>
 <20160309124626.GA28660@gmail.com>
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On Wed, Mar 09, 2016 at 01:46:26PM +0100, Ingo Molnar wrote:
> 
> * Yu-cheng Yu <yu-cheng.yu@intel.com> wrote:
> 
> > AVX was mistakenly believed to be dependent on eagerfpu switch.
> > This turns out to be false. The earlier patch should be reverted.
> > 
> > Original patch:
> >     http://git.kernel.org/tip/394db20ca240741a08d472173db13d6f6a6e5a28
> 
> So the original patch had a whole host of explanations of why that change is 
> correct. This revert should explain where that argumentation was wrong.

I will send out another version that includes more details.

Thanks,
Yu-cheng