From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752752AbaEZQ7r (ORCPT ); Mon, 26 May 2014 12:59:47 -0400 Received: from mga11.intel.com ([192.55.52.93]:20367 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751655AbaEZQ56 (ORCPT ); Mon, 26 May 2014 12:57:58 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.98,914,1392192000"; d="scan'208";a="545122349" From: "Fenghua Yu" To: "H. Peter Anvin" , "Ingo Molnar" , "Thomas Gleixner" , "Asit K Mallick" Cc: "linux-kernel" , "x86" , "Fenghua Yu" Subject: [PATCH 13/15] x86/xsaves: Call booting time xsaves and xrstors in setup_init_fpu_buf Date: Mon, 26 May 2014 10:01:20 -0700 Message-Id: <1401123682-5384-14-git-send-email-fenghua.yu@intel.com> X-Mailer: git-send-email 1.8.0.1 In-Reply-To: <1401123682-5384-1-git-send-email-fenghua.yu@intel.com> References: <1401123682-5384-1-git-send-email-fenghua.yu@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Fenghua Yu setup_init_fpu_buf() calls booting time xsaves and xrstors to save/restore xstate in xsave area. Signed-off-by: Fenghua Yu --- arch/x86/kernel/xsave.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/xsave.c b/arch/x86/kernel/xsave.c index a4b451c..8fa7c7d 100644 --- a/arch/x86/kernel/xsave.c +++ b/arch/x86/kernel/xsave.c @@ -496,15 +496,21 @@ static void __init setup_init_fpu_buf(void) setup_xstate_features(); + if (cpu_has_xsaves) { + init_xstate_buf->xsave_hdr.xcomp_bv = + (u64)1 << 63 | pcntxt_mask; + init_xstate_buf->xsave_hdr.xstate_bv = pcntxt_mask; + } + /* * Init all the features state with header_bv being 0x0 */ - xrstor_state(init_xstate_buf, -1); + xrstor_state_booting(init_xstate_buf, -1); /* * Dump the init state again. This is to identify the init state * of any feature which is not represented by all zero's. */ - xsave_state(init_xstate_buf, -1); + xsave_state_booting(init_xstate_buf, -1); } static enum { AUTO, ENABLE, DISABLE } eagerfpu = AUTO; -- 1.8.1.2