From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933610AbbEEQtj (ORCPT ); Tue, 5 May 2015 12:49:39 -0400 Received: from mail-wi0-f170.google.com ([209.85.212.170]:34951 "EHLO mail-wi0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761131AbbEEQ32 (ORCPT ); Tue, 5 May 2015 12:29:28 -0400 From: Ingo Molnar To: linux-kernel@vger.kernel.org Cc: Andy Lutomirski , Borislav Petkov , Dave Hansen , Fenghua Yu , "H. Peter Anvin" , Linus Torvalds , Oleg Nesterov , Thomas Gleixner Subject: [PATCH 065/208] x86/fpu: Use 'struct fpu' in fpu_copy() Date: Tue, 5 May 2015 18:24:45 +0200 Message-Id: <1430843228-13749-66-git-send-email-mingo@kernel.org> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1430843228-13749-1-git-send-email-mingo@kernel.org> References: <1430843228-13749-1-git-send-email-mingo@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Migrate this function to pure 'struct fpu' usage. Reviewed-by: Borislav Petkov Cc: Andy Lutomirski Cc: Dave Hansen Cc: Fenghua Yu Cc: H. Peter Anvin Cc: Linus Torvalds Cc: Oleg Nesterov Cc: Thomas Gleixner Signed-off-by: Ingo Molnar --- arch/x86/kernel/fpu/core.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c index 92cee0c18dc6..cfc2af98bcde 100644 --- a/arch/x86/kernel/fpu/core.c +++ b/arch/x86/kernel/fpu/core.c @@ -227,15 +227,12 @@ EXPORT_SYMBOL_GPL(fpstate_free); * In the 'lazy' case we save to the source context, mark the FPU lazy * via stts() and copy the source context into the destination context. */ -static void fpu_copy(struct task_struct *dst, struct task_struct *src) +static void fpu_copy(struct fpu *dst_fpu, struct fpu *src_fpu) { - struct fpu *dst_fpu = &dst->thread.fpu; - struct fpu *src_fpu = &src->thread.fpu; - - WARN_ON(src != current); + WARN_ON(src_fpu != ¤t->thread.fpu); if (use_eager_fpu()) { - memset(&dst->thread.fpu.state->xsave, 0, xstate_size); + memset(&dst_fpu->state->xsave, 0, xstate_size); __save_fpu(dst_fpu); } else { fpu__save(src_fpu); @@ -258,7 +255,7 @@ int fpu__copy(struct task_struct *dst, struct task_struct *src) if (err) return err; - fpu_copy(dst, src); + fpu_copy(dst_fpu, src_fpu); } return 0; } -- 2.1.0