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,URIBL_BLOCKED autolearn=unavailable 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 66BFCC433E0 for ; Tue, 26 Jan 2021 06:50:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 37572206E5 for ; Tue, 26 Jan 2021 06:50:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389194AbhAZGt7 (ORCPT ); Tue, 26 Jan 2021 01:49:59 -0500 Received: from pegase1.c-s.fr ([93.17.236.30]:4406 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729782AbhAYOvL (ORCPT ); Mon, 25 Jan 2021 09:51:11 -0500 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 4DPXmN6vR1z9v0H4; Mon, 25 Jan 2021 15:48:20 +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 SQT9Hvp7-JeT; Mon, 25 Jan 2021 15:48:20 +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 4DPXmN68LTz9v0Gh; Mon, 25 Jan 2021 15:48:20 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 67A4B8B79E; Mon, 25 Jan 2021 15:48:26 +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 DXA7C3O9gK3N; Mon, 25 Jan 2021 15:48:26 +0100 (CET) Received: from po16121vm.idsi0.si.c-s.fr (po15451.idsi0.si.c-s.fr [172.25.230.103]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 469B98B79B; Mon, 25 Jan 2021 15:48:26 +0100 (CET) Received: by po16121vm.idsi0.si.c-s.fr (Postfix, from userid 0) id 3B58166AD8; Mon, 25 Jan 2021 14:48:26 +0000 (UTC) Message-Id: In-Reply-To: References: From: Christophe Leroy Subject: [PATCH v4 13/23] powerpc/syscall: Use is_compat_task() To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , npiggin@gmail.com, msuchanek@suse.de Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Date: Mon, 25 Jan 2021 14:48:26 +0000 (UTC) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Instead of hard comparing task flags with _TIF_32BIT, use is_compat_task(). The advantage is that it returns 0 on PPC32 allthough _TIF_32BIT is always set. Signed-off-by: Christophe Leroy --- arch/powerpc/kernel/syscall.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/syscall.c b/arch/powerpc/kernel/syscall.c index bf9bf4b5bc41..cb415170b8f2 100644 --- a/arch/powerpc/kernel/syscall.c +++ b/arch/powerpc/kernel/syscall.c @@ -2,6 +2,8 @@ #include #include +#include + #include #include #include @@ -116,7 +118,7 @@ notrace long system_call_exception(long r3, long r4, long r5, /* May be faster to do array_index_nospec? */ barrier_nospec(); - if (unlikely(is_32bit_task())) { + if (unlikely(is_compat_task())) { f = (void *)compat_sys_call_table[r0]; r3 &= 0x00000000ffffffffULL; -- 2.25.0