From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 29B80C433E6 for ; Tue, 9 Mar 2021 12:11:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E8EEC65252 for ; Tue, 9 Mar 2021 12:11:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231789AbhCIMKp (ORCPT ); Tue, 9 Mar 2021 07:10:45 -0500 Received: from pegase1.c-s.fr ([93.17.236.30]:55050 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231309AbhCIMJ6 (ORCPT ); Tue, 9 Mar 2021 07:09:58 -0500 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 4DvvCl5XCpz9tyjG; Tue, 9 Mar 2021 13:09:55 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at c-s.fr Received: from pegase1.c-s.fr ([192.168.12.234]) by localhost (pegase1.c-s.fr [192.168.12.234]) (amavisd-new, port 10024) with ESMTP id 8RHNdaQSPPXS; Tue, 9 Mar 2021 13:09:55 +0100 (CET) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id 4DvvCl4nKFz9tyjM; Tue, 9 Mar 2021 13:09:55 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 12DC18B7FC; Tue, 9 Mar 2021 13:09:57 +0100 (CET) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id gZsxQlsEVveD; Tue, 9 Mar 2021 13:09:57 +0100 (CET) Received: from po16121vm.idsi0.si.c-s.fr (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id CED1C8B803; Tue, 9 Mar 2021 13:09:56 +0100 (CET) Received: by po16121vm.idsi0.si.c-s.fr (Postfix, from userid 0) id AFFC067555; Tue, 9 Mar 2021 12:09:56 +0000 (UTC) Message-Id: <9185f150b0aec40277c363ff5a4fdd84fce8f25c.1615291473.git.christophe.leroy@csgroup.eu> In-Reply-To: References: From: Christophe Leroy Subject: [PATCH v2 30/43] powerpc/32: Add a prepare_transfer_to_handler macro for exception prologs To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , npiggin@gmail.com Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Date: Tue, 9 Mar 2021 12:09:56 +0000 (UTC) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In order to increase flexibility, add a macro that will for now call transfer_to_handler. As transfer_to_handler doesn't do the actual transfer anymore, also name it prepare_transfer_to_handler. The following patches will progressively remove the use of transfer_to_handler label. Signed-off-by: Christophe Leroy --- arch/powerpc/kernel/entry_32.S | 3 +++ arch/powerpc/kernel/head_32.h | 4 ++++ arch/powerpc/kernel/head_booke.h | 4 ++++ 3 files changed, 11 insertions(+) diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S index cb2fa00b8fc1..e2346662444d 100644 --- a/arch/powerpc/kernel/entry_32.S +++ b/arch/powerpc/kernel/entry_32.S @@ -86,6 +86,8 @@ _ASM_NOKPROBE_SYMBOL(transfer_to_handler_full) .globl transfer_to_handler transfer_to_handler: + .globl prepare_transfer_to_handler +prepare_transfer_to_handler: SAVE_NVGPRS(r11) addi r3,r1,STACK_FRAME_OVERHEAD stw r2,GPR2(r11) @@ -132,6 +134,7 @@ transfer_to_handler_cont: stw r9,_MSR(r11) b fast_exception_return #endif +_ASM_NOKPROBE_SYMBOL(prepare_transfer_to_handler) _ASM_NOKPROBE_SYMBOL(transfer_to_handler) _ASM_NOKPROBE_SYMBOL(transfer_to_handler_cont) diff --git a/arch/powerpc/kernel/head_32.h b/arch/powerpc/kernel/head_32.h index bf4c288173ad..3ab0f3ad9a6a 100644 --- a/arch/powerpc/kernel/head_32.h +++ b/arch/powerpc/kernel/head_32.h @@ -115,6 +115,10 @@ _ASM_NOKPROBE_SYMBOL(\name\()_virt) .endm +.macro prepare_transfer_to_handler + bl prepare_transfer_to_handler +.endm + .macro SYSCALL_ENTRY trapno mfspr r9, SPRN_SRR1 mfspr r10, SPRN_SRR0 diff --git a/arch/powerpc/kernel/head_booke.h b/arch/powerpc/kernel/head_booke.h index 27a7358c04bb..0f02b970e797 100644 --- a/arch/powerpc/kernel/head_booke.h +++ b/arch/powerpc/kernel/head_booke.h @@ -87,6 +87,10 @@ END_BTB_FLUSH_SECTION SAVE_4GPRS(3, r11); \ SAVE_2GPRS(7, r11) +.macro prepare_transfer_to_handler + bl prepare_transfer_to_handler +.endm + .macro SYSCALL_ENTRY trapno intno srr1 mfspr r10, SPRN_SPRG_THREAD #ifdef CONFIG_KVM_BOOKE_HV -- 2.25.0