From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754468AbbGRIcI (ORCPT ); Sat, 18 Jul 2015 04:32:08 -0400 Received: from mail-la0-f41.google.com ([209.85.215.41]:33562 "EHLO mail-la0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753449AbbGRIbC (ORCPT ); Sat, 18 Jul 2015 04:31:02 -0400 From: Max Filippov To: linux-xtensa@linux-xtensa.org, linux-kernel@vger.kernel.org Cc: Chris Zankel , Marc Gauthier , Max Filippov Subject: [PATCH v2 11/13] xtensa: don't touch EXC_TABLE_FIXUP in _switch_to Date: Sat, 18 Jul 2015 11:30:14 +0300 Message-Id: <1437208216-15729-12-git-send-email-jcmvbkbc@gmail.com> X-Mailer: git-send-email 1.8.1.4 In-Reply-To: <1437208216-15729-1-git-send-email-jcmvbkbc@gmail.com> References: <1437208216-15729-1-git-send-email-jcmvbkbc@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org There's no way _switch_to can produce double exceptions now, don't enter/leave EXC_TABLE_FIXUP critical section. Signed-off-by: Max Filippov --- arch/xtensa/kernel/entry.S | 4 ---- 1 file changed, 4 deletions(-) diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S index 5771d5c..309e71b 100644 --- a/arch/xtensa/kernel/entry.S +++ b/arch/xtensa/kernel/entry.S @@ -1883,9 +1883,7 @@ ENTRY(_switch_to) /* Disable ints while we manipulate the stack pointer. */ rsil a14, LOCKLEVEL - rsr a3, excsave1 rsync - s32i a3, a3, EXC_TABLE_FIXUP /* enter critical section */ /* Switch CPENABLE */ @@ -1906,9 +1904,7 @@ ENTRY(_switch_to) */ rsr a3, excsave1 # exc_table - movi a6, 0 addi a7, a5, PT_REGS_OFFSET - s32i a6, a3, EXC_TABLE_FIXUP s32i a7, a3, EXC_TABLE_KSTK /* restore context of the task 'next' */ -- 1.8.1.4