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 BAE1EC43460 for ; Wed, 12 May 2021 08:35:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 84082613DA for ; Wed, 12 May 2021 08:35:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231165AbhELIgY (ORCPT ); Wed, 12 May 2021 04:36:24 -0400 Received: from pegase2.c-s.fr ([93.17.235.10]:39935 "EHLO pegase2.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231144AbhELIgX (ORCPT ); Wed, 12 May 2021 04:36:23 -0400 Received: from localhost (mailhub3.si.c-s.fr [172.26.127.67]) by localhost (Postfix) with ESMTP id 4Fg7QN2n86z9sf9; Wed, 12 May 2021 10:35:08 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from pegase2.c-s.fr ([172.26.127.65]) by localhost (pegase2.c-s.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id R5xS9jHhKOR7; Wed, 12 May 2021 10:35:08 +0200 (CEST) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase2.c-s.fr (Postfix) with ESMTP id 4Fg7QM0vplz9sf5; Wed, 12 May 2021 10:35:07 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id EE3278B7D9; Wed, 12 May 2021 10:35:06 +0200 (CEST) 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 uY2kH147d8en; Wed, 12 May 2021 10:35:06 +0200 (CEST) Received: from po15610vm.idsi0.si.c-s.fr (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 6F2E18B7D8; Wed, 12 May 2021 10:35:06 +0200 (CEST) Received: by po15610vm.idsi0.si.c-s.fr (Postfix, from userid 0) id 49146641A1; Wed, 12 May 2021 08:35:06 +0000 (UTC) Message-Id: <7d429c581dc6466c7d9978d0a066cc016c51594e.1620808468.git.christophe.leroy@csgroup.eu> In-Reply-To: References: From: Christophe Leroy Subject: [PATCH 5/5] powerpc/kuap: Remove to/from/size parameters of prevent_user_access() To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Date: Wed, 12 May 2021 08:35:06 +0000 (UTC) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org prevent_user_access() doesn't use anymore to/from/size parameters. Remove them. Signed-off-by: Christophe Leroy --- arch/powerpc/include/asm/book3s/32/kup.h | 3 +-- arch/powerpc/include/asm/book3s/64/kup.h | 3 +-- arch/powerpc/include/asm/kup.h | 15 +++++++-------- arch/powerpc/include/asm/nohash/32/kup-8xx.h | 3 +-- 4 files changed, 10 insertions(+), 14 deletions(-) diff --git a/arch/powerpc/include/asm/book3s/32/kup.h b/arch/powerpc/include/asm/book3s/32/kup.h index 7b88f7bdd90f..8149dae165ce 100644 --- a/arch/powerpc/include/asm/book3s/32/kup.h +++ b/arch/powerpc/include/asm/book3s/32/kup.h @@ -109,8 +109,7 @@ static __always_inline void allow_user_access(void __user *to, const void __user kuap_unlock_one((__force u32)to); } -static __always_inline void prevent_user_access(void __user *to, const void __user *from, - u32 size, unsigned long dir) +static __always_inline void prevent_user_access(unsigned long dir) { u32 kuap = current->thread.kuap; diff --git a/arch/powerpc/include/asm/book3s/64/kup.h b/arch/powerpc/include/asm/book3s/64/kup.h index 9700da3a4093..a1cc73a88710 100644 --- a/arch/powerpc/include/asm/book3s/64/kup.h +++ b/arch/powerpc/include/asm/book3s/64/kup.h @@ -398,8 +398,7 @@ static __always_inline void allow_user_access(void __user *to, const void __user #endif /* !CONFIG_PPC_KUAP */ -static inline void prevent_user_access(void __user *to, const void __user *from, - unsigned long size, unsigned long dir) +static inline void prevent_user_access(unsigned long dir) { set_kuap(AMR_KUAP_BLOCKED); if (static_branch_unlikely(&uaccess_flush_key)) diff --git a/arch/powerpc/include/asm/kup.h b/arch/powerpc/include/asm/kup.h index aa93eb4e3be5..341a064a7bfa 100644 --- a/arch/powerpc/include/asm/kup.h +++ b/arch/powerpc/include/asm/kup.h @@ -82,8 +82,7 @@ static inline unsigned long kuap_get_and_assert_locked(void) #ifndef CONFIG_PPC_BOOK3S_64 static inline void allow_user_access(void __user *to, const void __user *from, unsigned long size, unsigned long dir) { } -static inline void prevent_user_access(void __user *to, const void __user *from, - unsigned long size, unsigned long dir) { } +static inline void prevent_user_access(unsigned long dir) { } static inline unsigned long prevent_user_access_return(void) { return 0UL; } static inline void restore_user_access(unsigned long flags) { } #endif /* CONFIG_PPC_BOOK3S_64 */ @@ -115,33 +114,33 @@ static __always_inline void allow_read_write_user(void __user *to, const void __ static __always_inline void prevent_read_from_user(const void __user *from, unsigned long size) { - prevent_user_access(NULL, from, size, KUAP_READ); + prevent_user_access(KUAP_READ); } static __always_inline void prevent_write_to_user(void __user *to, unsigned long size) { - prevent_user_access(to, NULL, size, KUAP_WRITE); + prevent_user_access(KUAP_WRITE); } static __always_inline void prevent_read_write_user(void __user *to, const void __user *from, unsigned long size) { - prevent_user_access(to, from, size, KUAP_READ_WRITE); + prevent_user_access(KUAP_READ_WRITE); } static __always_inline void prevent_current_access_user(void) { - prevent_user_access(NULL, NULL, ~0UL, KUAP_READ_WRITE); + prevent_user_access(KUAP_READ_WRITE); } static __always_inline void prevent_current_read_from_user(void) { - prevent_user_access(NULL, NULL, ~0UL, KUAP_READ); + prevent_user_access(KUAP_READ); } static __always_inline void prevent_current_write_to_user(void) { - prevent_user_access(NULL, NULL, ~0UL, KUAP_WRITE); + prevent_user_access(KUAP_WRITE); } #endif /* !__ASSEMBLY__ */ diff --git a/arch/powerpc/include/asm/nohash/32/kup-8xx.h b/arch/powerpc/include/asm/nohash/32/kup-8xx.h index 295ef5639609..61333e3b5d2b 100644 --- a/arch/powerpc/include/asm/nohash/32/kup-8xx.h +++ b/arch/powerpc/include/asm/nohash/32/kup-8xx.h @@ -48,8 +48,7 @@ static inline void allow_user_access(void __user *to, const void __user *from, mtspr(SPRN_MD_AP, MD_APG_INIT); } -static inline void prevent_user_access(void __user *to, const void __user *from, - unsigned long size, unsigned long dir) +static inline void prevent_user_access(unsigned long dir) { mtspr(SPRN_MD_AP, MD_APG_KUAP); } -- 2.25.0