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Date: Wed, 22 Apr 2015 17:21:29 -0700
From: Dave Hansen <dave.hansen@intel.com>
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To: "Yu, Fenghua" <fenghua.yu@intel.com>,
        "H. Peter Anvin" <hpa@linux.intel.com>, Ingo Molnar <mingo@elte.hu>,
        Thomas Gleixner <tglx@linutronix.de>,
        "Mallick, Asit K" <asit.k.mallick@intel.com>,
        "Williamson, Glenn P" <glenn.p.williamson@intel.com>
CC: linux-kernel <linux-kernel@vger.kernel.org>, x86 <x86@kernel.org>
Subject: Re: [PATCH Bugfix v2 2/4] x86/xsaves: Define and use user_xstate_size
 for xstate size in signal context
References: <1429678319-61356-1-git-send-email-fenghua.yu@intel.com> <1429678319-61356-3-git-send-email-fenghua.yu@intel.com> <5537EC31.7080808@intel.com> <3E5A0FA7E9CA944F9D5414FEC6C712205C8CE779@ORSMSX106.amr.corp.intel.com> <5537F7AA.3010609@intel.com> <3E5A0FA7E9CA944F9D5414FEC6C712205C8CF9CF@ORSMSX106.amr.corp.intel.com>
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On 04/22/2015 05:06 PM, Yu, Fenghua wrote:
> Xsave->xsave_hdr.xstate_bv is equal to pcntxt_mask (see
> setup_init_fpu_buf()).

This is going to be a long thread.  But, let's take it a step at a time.

Do you agree that this earlier statement is incorrect?