From mboxrd@z Thu Jan 1 00:00:00 1970 From: guoren@kernel.org Subject: [PATCH 04/13] csky: Fixup duplicated restore sp in RESTORE_REGS_FTRACE Date: Sat, 1 Aug 2020 01:14:04 +0000 Message-ID: <1596244453-98575-5-git-send-email-guoren@kernel.org> References: <1596244453-98575-1-git-send-email-guoren@kernel.org> Return-path: In-Reply-To: <1596244453-98575-1-git-send-email-guoren@kernel.org> Sender: linux-kernel-owner@vger.kernel.org To: guoren@kernel.org, arnd@arndb.de Cc: linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org, linux-arch@vger.kernel.org, Guo Ren List-Id: linux-arch.vger.kernel.org From: Guo Ren There is no user return for RESTORE_REGS_FTRACE, so it's no need to save sp into ss0 as RESTORE_REGS_ALL. Signed-off-by: Guo Ren Cc: Arnd Bergmann --- arch/csky/abiv2/inc/abi/entry.h | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/csky/abiv2/inc/abi/entry.h b/arch/csky/abiv2/inc/abi/entry.h index 4fdd6c1..bedcc6f 100644 --- a/arch/csky/abiv2/inc/abi/entry.h +++ b/arch/csky/abiv2/inc/abi/entry.h @@ -136,8 +136,6 @@ .macro RESTORE_REGS_FTRACE ldw tls, (sp, 0) - ldw a0, (sp, 16) - mtcr a0, ss0 #ifdef CONFIG_CPU_HAS_HILO ldw a0, (sp, 140) @@ -158,7 +156,6 @@ addi sp, 40 ldm r16-r30, (sp) addi sp, 72 - mfcr sp, ss0 .endm .macro SAVE_SWITCH_STACK -- 2.7.4 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.kernel.org ([198.145.29.99]:43608 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728152AbgHABOp (ORCPT ); Fri, 31 Jul 2020 21:14:45 -0400 From: guoren@kernel.org Subject: [PATCH 04/13] csky: Fixup duplicated restore sp in RESTORE_REGS_FTRACE Date: Sat, 1 Aug 2020 01:14:04 +0000 Message-ID: <1596244453-98575-5-git-send-email-guoren@kernel.org> In-Reply-To: <1596244453-98575-1-git-send-email-guoren@kernel.org> References: <1596244453-98575-1-git-send-email-guoren@kernel.org> Sender: linux-arch-owner@vger.kernel.org List-ID: To: guoren@kernel.org, arnd@arndb.de Cc: linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org, linux-arch@vger.kernel.org, Guo Ren Message-ID: <20200801011404.JyIovGrzcJZdBfEWZ17GI58TrZkLNZ80dykKnMqKtJ0@z> From: Guo Ren There is no user return for RESTORE_REGS_FTRACE, so it's no need to save sp into ss0 as RESTORE_REGS_ALL. Signed-off-by: Guo Ren Cc: Arnd Bergmann --- arch/csky/abiv2/inc/abi/entry.h | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/csky/abiv2/inc/abi/entry.h b/arch/csky/abiv2/inc/abi/entry.h index 4fdd6c1..bedcc6f 100644 --- a/arch/csky/abiv2/inc/abi/entry.h +++ b/arch/csky/abiv2/inc/abi/entry.h @@ -136,8 +136,6 @@ .macro RESTORE_REGS_FTRACE ldw tls, (sp, 0) - ldw a0, (sp, 16) - mtcr a0, ss0 #ifdef CONFIG_CPU_HAS_HILO ldw a0, (sp, 140) @@ -158,7 +156,6 @@ addi sp, 40 ldm r16-r30, (sp) addi sp, 72 - mfcr sp, ss0 .endm .macro SAVE_SWITCH_STACK -- 2.7.4