From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754948Ab1GBQam (ORCPT ); Sat, 2 Jul 2011 12:30:42 -0400 Received: from mail-ww0-f44.google.com ([74.125.82.44]:52746 "EHLO mail-ww0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752032Ab1GBQ36 (ORCPT ); Sat, 2 Jul 2011 12:29:58 -0400 From: Frederic Weisbecker To: Ingo Molnar Cc: LKML , Frederic Weisbecker , Thomas Gleixner , "H. Peter Anvin" , Peter Zijlstra , Arnaldo Carvalho de Melo , Jan Beulich Subject: [PATCH 4/6] x86,64: Separate arg1 from rbp handling in SAVE_REGS_IRQ Date: Sat, 2 Jul 2011 18:29:42 +0200 Message-Id: <1309624184-9790-5-git-send-email-fweisbec@gmail.com> X-Mailer: git-send-email 1.7.5.4 In-Reply-To: <1309624184-9790-1-git-send-email-fweisbec@gmail.com> References: <1309624184-9790-1-git-send-email-fweisbec@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Just for clarity in the code. Have a first block that handles the frame pointer and a separate one that handles pt_regs pointer and its use. Signed-off-by: Frederic Weisbecker Cc: Ingo Molnar Cc: Thomas Gleixner Cc: H. Peter Anvin Cc: Peter Zijlstra Cc: Arnaldo Carvalho de Melo Cc: Jan Beulich --- arch/x86/kernel/entry_64.S | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S index b6b2e85..20dc8e6 100644 --- a/arch/x86/kernel/entry_64.S +++ b/arch/x86/kernel/entry_64.S @@ -310,9 +310,10 @@ ENDPROC(native_usergs_sysret64) movq_cfi r10, R10-RBP movq_cfi r11, R11-RBP - leaq -RBP(%rsp),%rdi /* arg1 for handler */ movq_cfi rbp, 0 /* push %rbp */ movq %rsp, %rbp + + leaq -RBP(%rsp),%rdi /* arg1 for handler */ testl $3, CS(%rdi) je 1f SWAPGS -- 1.7.5.4