From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Rapoport Date: Tue, 14 Apr 2020 15:34:55 +0000 Subject: [PATCH v4 14/14] mm: remove __ARCH_HAS_5LEVEL_HACK and include/asm-generic/5level-fixup.h Message-Id: <20200414153455.21744-15-rppt@kernel.org> List-Id: References: <20200414153455.21744-1-rppt@kernel.org> In-Reply-To: <20200414153455.21744-1-rppt@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Andrew Morton Cc: Rich Felker , linux-ia64@vger.kernel.org, Geert Uytterhoeven , linux-sh@vger.kernel.org, Benjamin Herrenschmidt , linux-mm@kvack.org, Paul Mackerras , linux-hexagon@vger.kernel.org, Will Deacon , kvmarm@lists.cs.columbia.edu, Jonas Bonn , linux-arch@vger.kernel.org, Brian Cain , Marc Zyngier , Russell King , Ley Foon Tan , Mike Rapoport , Catalin Marinas , uclinux-h8-devel@lists.sourceforge.jp, Fenghua Yu , Arnd Bergmann , kvm-ppc@vger.kernel.org, Stefan Kristiansson , openrisc@lists.librecores.org, Stafford Horne , Guan Xuetao , linux-arm-kernel@lists.infradead.org, Christophe Leroy , Tony Luck , Yoshinori Sato , linux-kernel@vger.kernel.org, Michael Ellerman , nios2-dev@lists.rocketboards.org, linuxppc-dev@lists.ozlabs.org, Mike Rapoport From: Mike Rapoport There are no architectures that use include/asm-generic/5level-fixup.h therefore it can be removed along with __ARCH_HAS_5LEVEL_HACK define and the code it surrounds Signed-off-by: Mike Rapoport --- include/asm-generic/5level-fixup.h | 58 ------------------------------ include/linux/mm.h | 6 ---- mm/kasan/init.c | 11 ------ mm/memory.c | 8 ----- 4 files changed, 83 deletions(-) delete mode 100644 include/asm-generic/5level-fixup.h diff --git a/include/asm-generic/5level-fixup.h b/include/asm-generic/5level-fixup.h deleted file mode 100644 index 4c74b1c1d13b..000000000000 --- a/include/asm-generic/5level-fixup.h +++ /dev/null @@ -1,58 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _5LEVEL_FIXUP_H -#define _5LEVEL_FIXUP_H - -#define __ARCH_HAS_5LEVEL_HACK -#define __PAGETABLE_P4D_FOLDED 1 - -#define P4D_SHIFT PGDIR_SHIFT -#define P4D_SIZE PGDIR_SIZE -#define P4D_MASK PGDIR_MASK -#define MAX_PTRS_PER_P4D 1 -#define PTRS_PER_P4D 1 - -#define p4d_t pgd_t - -#define pud_alloc(mm, p4d, address) \ - ((unlikely(pgd_none(*(p4d))) && __pud_alloc(mm, p4d, address)) ? \ - NULL : pud_offset(p4d, address)) - -#define p4d_alloc(mm, pgd, address) (pgd) -#define p4d_offset(pgd, start) (pgd) - -#ifndef __ASSEMBLY__ -static inline int p4d_none(p4d_t p4d) -{ - return 0; -} - -static inline int p4d_bad(p4d_t p4d) -{ - return 0; -} - -static inline int p4d_present(p4d_t p4d) -{ - return 1; -} -#endif - -#define p4d_ERROR(p4d) do { } while (0) -#define p4d_clear(p4d) pgd_clear(p4d) -#define p4d_val(p4d) pgd_val(p4d) -#define p4d_populate(mm, p4d, pud) pgd_populate(mm, p4d, pud) -#define p4d_populate_safe(mm, p4d, pud) pgd_populate(mm, p4d, pud) -#define p4d_page(p4d) pgd_page(p4d) -#define p4d_page_vaddr(p4d) pgd_page_vaddr(p4d) - -#define __p4d(x) __pgd(x) -#define set_p4d(p4dp, p4d) set_pgd(p4dp, p4d) - -#undef p4d_free_tlb -#define p4d_free_tlb(tlb, x, addr) do { } while (0) -#define p4d_free(mm, x) do { } while (0) - -#undef p4d_addr_end -#define p4d_addr_end(addr, end) (end) - -#endif diff --git a/include/linux/mm.h b/include/linux/mm.h index 5a323422d783..f794b77df1ca 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2060,11 +2060,6 @@ int __pte_alloc_kernel(pmd_t *pmd); #if defined(CONFIG_MMU) -/* - * The following ifdef needed to get the 5level-fixup.h header to work. - * Remove it when 5level-fixup.h has been removed. - */ -#ifndef __ARCH_HAS_5LEVEL_HACK static inline p4d_t *p4d_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long address) { @@ -2078,7 +2073,6 @@ static inline pud_t *pud_alloc(struct mm_struct *mm, p4d_t *p4d, return (unlikely(p4d_none(*p4d)) && __pud_alloc(mm, p4d, address)) ? NULL : pud_offset(p4d, address); } -#endif /* !__ARCH_HAS_5LEVEL_HACK */ static inline pmd_t *pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address) { diff --git a/mm/kasan/init.c b/mm/kasan/init.c index ce45c491ebcd..fe6be0be1f76 100644 --- a/mm/kasan/init.c +++ b/mm/kasan/init.c @@ -250,20 +250,9 @@ int __ref kasan_populate_early_shadow(const void *shadow_start, * 3,2 - level page tables where we don't have * puds,pmds, so pgd_populate(), pud_populate() * is noops. - * - * The ifndef is required to avoid build breakage. - * - * With 5level-fixup.h, pgd_populate() is not nop and - * we reference kasan_early_shadow_p4d. It's not defined - * unless 5-level paging enabled. - * - * The ifndef can be dropped once all KASAN-enabled - * architectures will switch to pgtable-nop4d.h. */ -#ifndef __ARCH_HAS_5LEVEL_HACK pgd_populate(&init_mm, pgd, lm_alias(kasan_early_shadow_p4d)); -#endif p4d = p4d_offset(pgd, addr); p4d_populate(&init_mm, p4d, lm_alias(kasan_early_shadow_pud)); diff --git a/mm/memory.c b/mm/memory.c index f703fe8c8346..379277c631b4 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -4434,19 +4434,11 @@ int __pud_alloc(struct mm_struct *mm, p4d_t *p4d, unsigned long address) smp_wmb(); /* See comment in __pte_alloc */ spin_lock(&mm->page_table_lock); -#ifndef __ARCH_HAS_5LEVEL_HACK if (!p4d_present(*p4d)) { mm_inc_nr_puds(mm); p4d_populate(mm, p4d, new); } else /* Another has populated it */ pud_free(mm, new); -#else - if (!pgd_present(*p4d)) { - mm_inc_nr_puds(mm); - pgd_populate(mm, p4d, new); - } else /* Another has populated it */ - pud_free(mm, new); -#endif /* __ARCH_HAS_5LEVEL_HACK */ spin_unlock(&mm->page_table_lock); return 0; } -- 2.25.1 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=-9.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT 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 135DBC2BA19 for ; Tue, 14 Apr 2020 15:37:31 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id 8EB4C20678 for ; Tue, 14 Apr 2020 15:37:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="TIU3Y4/B" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8EB4C20678 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvmarm-bounces@lists.cs.columbia.edu Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 277824B1F3; Tue, 14 Apr 2020 11:37:30 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Authentication-Results: mm01.cs.columbia.edu (amavisd-new); dkim=softfail (fail, message has been altered) header.i=@kernel.org Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id JJhLL1Cu6rP8; Tue, 14 Apr 2020 11:37:28 -0400 (EDT) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id D84C74B144; Tue, 14 Apr 2020 11:37:28 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 0AC0D4B11C for ; Tue, 14 Apr 2020 11:37:28 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id XDpLfNUkswSU for ; Tue, 14 Apr 2020 11:37:26 -0400 (EDT) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id B8B834B0B3 for ; Tue, 14 Apr 2020 11:37:26 -0400 (EDT) Received: from aquarius.haifa.ibm.com (nesher1.haifa.il.ibm.com [195.110.40.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id B0989206D5; Tue, 14 Apr 2020 15:37:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586878645; bh=CqaKK6+aVg5D1Nr505BsEp2b4ZBD+GLgCm9Y6FhaO5k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TIU3Y4/BP8R5HFjWKB4Rmbnxn+YL/C+cyvm9VFW4zfGVaOrEFBPnfTQvvacGktioX gSlAJkOtV7YH1cGIDUV9ajgtcnBzYrWnAUYHC9A961Ty8BmpAPQOn2t383YSjR0zKg 9FVQAlTRoUWPWY9rs58gJHD/LVWxwGErlNZP2VZc= From: Mike Rapoport To: Andrew Morton Subject: [PATCH v4 14/14] mm: remove __ARCH_HAS_5LEVEL_HACK and include/asm-generic/5level-fixup.h Date: Tue, 14 Apr 2020 18:34:55 +0300 Message-Id: <20200414153455.21744-15-rppt@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200414153455.21744-1-rppt@kernel.org> References: <20200414153455.21744-1-rppt@kernel.org> MIME-Version: 1.0 Cc: Rich Felker , linux-ia64@vger.kernel.org, Geert Uytterhoeven , linux-sh@vger.kernel.org, Benjamin Herrenschmidt , linux-mm@kvack.org, Paul Mackerras , linux-hexagon@vger.kernel.org, Will Deacon , kvmarm@lists.cs.columbia.edu, Jonas Bonn , linux-arch@vger.kernel.org, Brian Cain , Marc Zyngier , Russell King , Ley Foon Tan , Mike Rapoport , Catalin Marinas , uclinux-h8-devel@lists.sourceforge.jp, Fenghua Yu , Arnd Bergmann , kvm-ppc@vger.kernel.org, Stefan Kristiansson , openrisc@lists.librecores.org, Stafford Horne , Guan Xuetao , linux-arm-kernel@lists.infradead.org, Christophe Leroy , Tony Luck , Yoshinori Sato , linux-kernel@vger.kernel.org, Michael Ellerman , nios2-dev@lists.rocketboards.org, linuxppc-dev@lists.ozlabs.org, Mike Rapoport X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu From: Mike Rapoport There are no architectures that use include/asm-generic/5level-fixup.h therefore it can be removed along with __ARCH_HAS_5LEVEL_HACK define and the code it surrounds Signed-off-by: Mike Rapoport --- include/asm-generic/5level-fixup.h | 58 ------------------------------ include/linux/mm.h | 6 ---- mm/kasan/init.c | 11 ------ mm/memory.c | 8 ----- 4 files changed, 83 deletions(-) delete mode 100644 include/asm-generic/5level-fixup.h diff --git a/include/asm-generic/5level-fixup.h b/include/asm-generic/5level-fixup.h deleted file mode 100644 index 4c74b1c1d13b..000000000000 --- a/include/asm-generic/5level-fixup.h +++ /dev/null @@ -1,58 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _5LEVEL_FIXUP_H -#define _5LEVEL_FIXUP_H - -#define __ARCH_HAS_5LEVEL_HACK -#define __PAGETABLE_P4D_FOLDED 1 - -#define P4D_SHIFT PGDIR_SHIFT -#define P4D_SIZE PGDIR_SIZE -#define P4D_MASK PGDIR_MASK -#define MAX_PTRS_PER_P4D 1 -#define PTRS_PER_P4D 1 - -#define p4d_t pgd_t - -#define pud_alloc(mm, p4d, address) \ - ((unlikely(pgd_none(*(p4d))) && __pud_alloc(mm, p4d, address)) ? \ - NULL : pud_offset(p4d, address)) - -#define p4d_alloc(mm, pgd, address) (pgd) -#define p4d_offset(pgd, start) (pgd) - -#ifndef __ASSEMBLY__ -static inline int p4d_none(p4d_t p4d) -{ - return 0; -} - -static inline int p4d_bad(p4d_t p4d) -{ - return 0; -} - -static inline int p4d_present(p4d_t p4d) -{ - return 1; -} -#endif - -#define p4d_ERROR(p4d) do { } while (0) -#define p4d_clear(p4d) pgd_clear(p4d) -#define p4d_val(p4d) pgd_val(p4d) -#define p4d_populate(mm, p4d, pud) pgd_populate(mm, p4d, pud) -#define p4d_populate_safe(mm, p4d, pud) pgd_populate(mm, p4d, pud) -#define p4d_page(p4d) pgd_page(p4d) -#define p4d_page_vaddr(p4d) pgd_page_vaddr(p4d) - -#define __p4d(x) __pgd(x) -#define set_p4d(p4dp, p4d) set_pgd(p4dp, p4d) - -#undef p4d_free_tlb -#define p4d_free_tlb(tlb, x, addr) do { } while (0) -#define p4d_free(mm, x) do { } while (0) - -#undef p4d_addr_end -#define p4d_addr_end(addr, end) (end) - -#endif diff --git a/include/linux/mm.h b/include/linux/mm.h index 5a323422d783..f794b77df1ca 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2060,11 +2060,6 @@ int __pte_alloc_kernel(pmd_t *pmd); #if defined(CONFIG_MMU) -/* - * The following ifdef needed to get the 5level-fixup.h header to work. - * Remove it when 5level-fixup.h has been removed. - */ -#ifndef __ARCH_HAS_5LEVEL_HACK static inline p4d_t *p4d_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long address) { @@ -2078,7 +2073,6 @@ static inline pud_t *pud_alloc(struct mm_struct *mm, p4d_t *p4d, return (unlikely(p4d_none(*p4d)) && __pud_alloc(mm, p4d, address)) ? NULL : pud_offset(p4d, address); } -#endif /* !__ARCH_HAS_5LEVEL_HACK */ static inline pmd_t *pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address) { diff --git a/mm/kasan/init.c b/mm/kasan/init.c index ce45c491ebcd..fe6be0be1f76 100644 --- a/mm/kasan/init.c +++ b/mm/kasan/init.c @@ -250,20 +250,9 @@ int __ref kasan_populate_early_shadow(const void *shadow_start, * 3,2 - level page tables where we don't have * puds,pmds, so pgd_populate(), pud_populate() * is noops. - * - * The ifndef is required to avoid build breakage. - * - * With 5level-fixup.h, pgd_populate() is not nop and - * we reference kasan_early_shadow_p4d. It's not defined - * unless 5-level paging enabled. - * - * The ifndef can be dropped once all KASAN-enabled - * architectures will switch to pgtable-nop4d.h. */ -#ifndef __ARCH_HAS_5LEVEL_HACK pgd_populate(&init_mm, pgd, lm_alias(kasan_early_shadow_p4d)); -#endif p4d = p4d_offset(pgd, addr); p4d_populate(&init_mm, p4d, lm_alias(kasan_early_shadow_pud)); diff --git a/mm/memory.c b/mm/memory.c index f703fe8c8346..379277c631b4 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -4434,19 +4434,11 @@ int __pud_alloc(struct mm_struct *mm, p4d_t *p4d, unsigned long address) smp_wmb(); /* See comment in __pte_alloc */ spin_lock(&mm->page_table_lock); -#ifndef __ARCH_HAS_5LEVEL_HACK if (!p4d_present(*p4d)) { mm_inc_nr_puds(mm); p4d_populate(mm, p4d, new); } else /* Another has populated it */ pud_free(mm, new); -#else - if (!pgd_present(*p4d)) { - mm_inc_nr_puds(mm); - pgd_populate(mm, p4d, new); - } else /* Another has populated it */ - pud_free(mm, new); -#endif /* __ARCH_HAS_5LEVEL_HACK */ spin_unlock(&mm->page_table_lock); return 0; } -- 2.25.1 _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Rapoport Subject: [PATCH v4 14/14] mm: remove __ARCH_HAS_5LEVEL_HACK and include/asm-generic/5level-fixup.h Date: Tue, 14 Apr 2020 18:34:55 +0300 Message-ID: <20200414153455.21744-15-rppt@kernel.org> References: <20200414153455.21744-1-rppt@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20200414153455.21744-1-rppt@kernel.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu To: Andrew Morton Cc: Rich Felker , linux-ia64@vger.kernel.org, Geert Uytterhoeven , linux-sh@vger.kernel.org, Benjamin Herrenschmidt , linux-mm@kvack.org, Paul Mackerras , linux-hexagon@vger.kernel.org, Will Deacon , kvmarm@lists.cs.columbia.edu, Jonas Bonn , linux-arch@vger.kernel.org, Brian Cain , Marc Zyngier , Russell King , Ley Foon Tan , Mike Rapoport , Catalin Marinas , uclinux-h8-devel@lists.sourceforge.jp, Fenghua Yu , Arnd Bergmann , kvm-ppc@vger.kernel.org, Stefan Kristiansson , openrisc@lists.librecores.org, Stafford Horne , Guan Xuetao List-Id: linux-arch.vger.kernel.org From: Mike Rapoport There are no architectures that use include/asm-generic/5level-fixup.h therefore it can be removed along with __ARCH_HAS_5LEVEL_HACK define and the code it surrounds Signed-off-by: Mike Rapoport --- include/asm-generic/5level-fixup.h | 58 ------------------------------ include/linux/mm.h | 6 ---- mm/kasan/init.c | 11 ------ mm/memory.c | 8 ----- 4 files changed, 83 deletions(-) delete mode 100644 include/asm-generic/5level-fixup.h diff --git a/include/asm-generic/5level-fixup.h b/include/asm-generic/5level-fixup.h deleted file mode 100644 index 4c74b1c1d13b..000000000000 --- a/include/asm-generic/5level-fixup.h +++ /dev/null @@ -1,58 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _5LEVEL_FIXUP_H -#define _5LEVEL_FIXUP_H - -#define __ARCH_HAS_5LEVEL_HACK -#define __PAGETABLE_P4D_FOLDED 1 - -#define P4D_SHIFT PGDIR_SHIFT -#define P4D_SIZE PGDIR_SIZE -#define P4D_MASK PGDIR_MASK -#define MAX_PTRS_PER_P4D 1 -#define PTRS_PER_P4D 1 - -#define p4d_t pgd_t - -#define pud_alloc(mm, p4d, address) \ - ((unlikely(pgd_none(*(p4d))) && __pud_alloc(mm, p4d, address)) ? \ - NULL : pud_offset(p4d, address)) - -#define p4d_alloc(mm, pgd, address) (pgd) -#define p4d_offset(pgd, start) (pgd) - -#ifndef __ASSEMBLY__ -static inline int p4d_none(p4d_t p4d) -{ - return 0; -} - -static inline int p4d_bad(p4d_t p4d) -{ - return 0; -} - -static inline int p4d_present(p4d_t p4d) -{ - return 1; -} -#endif - -#define p4d_ERROR(p4d) do { } while (0) -#define p4d_clear(p4d) pgd_clear(p4d) -#define p4d_val(p4d) pgd_val(p4d) -#define p4d_populate(mm, p4d, pud) pgd_populate(mm, p4d, pud) -#define p4d_populate_safe(mm, p4d, pud) pgd_populate(mm, p4d, pud) -#define p4d_page(p4d) pgd_page(p4d) -#define p4d_page_vaddr(p4d) pgd_page_vaddr(p4d) - -#define __p4d(x) __pgd(x) -#define set_p4d(p4dp, p4d) set_pgd(p4dp, p4d) - -#undef p4d_free_tlb -#define p4d_free_tlb(tlb, x, addr) do { } while (0) -#define p4d_free(mm, x) do { } while (0) - -#undef p4d_addr_end -#define p4d_addr_end(addr, end) (end) - -#endif diff --git a/include/linux/mm.h b/include/linux/mm.h index 5a323422d783..f794b77df1ca 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2060,11 +2060,6 @@ int __pte_alloc_kernel(pmd_t *pmd); #if defined(CONFIG_MMU) -/* - * The following ifdef needed to get the 5level-fixup.h header to work. - * Remove it when 5level-fixup.h has been removed. - */ -#ifndef __ARCH_HAS_5LEVEL_HACK static inline p4d_t *p4d_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long address) { @@ -2078,7 +2073,6 @@ static inline pud_t *pud_alloc(struct mm_struct *mm, p4d_t *p4d, return (unlikely(p4d_none(*p4d)) && __pud_alloc(mm, p4d, address)) ? NULL : pud_offset(p4d, address); } -#endif /* !__ARCH_HAS_5LEVEL_HACK */ static inline pmd_t *pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address) { diff --git a/mm/kasan/init.c b/mm/kasan/init.c index ce45c491ebcd..fe6be0be1f76 100644 --- a/mm/kasan/init.c +++ b/mm/kasan/init.c @@ -250,20 +250,9 @@ int __ref kasan_populate_early_shadow(const void *shadow_start, * 3,2 - level page tables where we don't have * puds,pmds, so pgd_populate(), pud_populate() * is noops. - * - * The ifndef is required to avoid build breakage. - * - * With 5level-fixup.h, pgd_populate() is not nop and - * we reference kasan_early_shadow_p4d. It's not defined - * unless 5-level paging enabled. - * - * The ifndef can be dropped once all KASAN-enabled - * architectures will switch to pgtable-nop4d.h. */ -#ifndef __ARCH_HAS_5LEVEL_HACK pgd_populate(&init_mm, pgd, lm_alias(kasan_early_shadow_p4d)); -#endif p4d = p4d_offset(pgd, addr); p4d_populate(&init_mm, p4d, lm_alias(kasan_early_shadow_pud)); diff --git a/mm/memory.c b/mm/memory.c index f703fe8c8346..379277c631b4 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -4434,19 +4434,11 @@ int __pud_alloc(struct mm_struct *mm, p4d_t *p4d, unsigned long address) smp_wmb(); /* See comment in __pte_alloc */ spin_lock(&mm->page_table_lock); -#ifndef __ARCH_HAS_5LEVEL_HACK if (!p4d_present(*p4d)) { mm_inc_nr_puds(mm); p4d_populate(mm, p4d, new); } else /* Another has populated it */ pud_free(mm, new); -#else - if (!pgd_present(*p4d)) { - mm_inc_nr_puds(mm); - pgd_populate(mm, p4d, new); - } else /* Another has populated it */ - pud_free(mm, new); -#endif /* __ARCH_HAS_5LEVEL_HACK */ spin_unlock(&mm->page_table_lock); return 0; } -- 2.25.1 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Rapoport Date: Tue, 14 Apr 2020 18:34:55 +0300 Subject: [OpenRISC] [PATCH v4 14/14] mm: remove __ARCH_HAS_5LEVEL_HACK and include/asm-generic/5level-fixup.h In-Reply-To: <20200414153455.21744-1-rppt@kernel.org> References: <20200414153455.21744-1-rppt@kernel.org> Message-ID: <20200414153455.21744-15-rppt@kernel.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: openrisc@lists.librecores.org From: Mike Rapoport There are no architectures that use include/asm-generic/5level-fixup.h therefore it can be removed along with __ARCH_HAS_5LEVEL_HACK define and the code it surrounds Signed-off-by: Mike Rapoport --- include/asm-generic/5level-fixup.h | 58 ------------------------------ include/linux/mm.h | 6 ---- mm/kasan/init.c | 11 ------ mm/memory.c | 8 ----- 4 files changed, 83 deletions(-) delete mode 100644 include/asm-generic/5level-fixup.h diff --git a/include/asm-generic/5level-fixup.h b/include/asm-generic/5level-fixup.h deleted file mode 100644 index 4c74b1c1d13b..000000000000 --- a/include/asm-generic/5level-fixup.h +++ /dev/null @@ -1,58 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _5LEVEL_FIXUP_H -#define _5LEVEL_FIXUP_H - -#define __ARCH_HAS_5LEVEL_HACK -#define __PAGETABLE_P4D_FOLDED 1 - -#define P4D_SHIFT PGDIR_SHIFT -#define P4D_SIZE PGDIR_SIZE -#define P4D_MASK PGDIR_MASK -#define MAX_PTRS_PER_P4D 1 -#define PTRS_PER_P4D 1 - -#define p4d_t pgd_t - -#define pud_alloc(mm, p4d, address) \ - ((unlikely(pgd_none(*(p4d))) && __pud_alloc(mm, p4d, address)) ? \ - NULL : pud_offset(p4d, address)) - -#define p4d_alloc(mm, pgd, address) (pgd) -#define p4d_offset(pgd, start) (pgd) - -#ifndef __ASSEMBLY__ -static inline int p4d_none(p4d_t p4d) -{ - return 0; -} - -static inline int p4d_bad(p4d_t p4d) -{ - return 0; -} - -static inline int p4d_present(p4d_t p4d) -{ - return 1; -} -#endif - -#define p4d_ERROR(p4d) do { } while (0) -#define p4d_clear(p4d) pgd_clear(p4d) -#define p4d_val(p4d) pgd_val(p4d) -#define p4d_populate(mm, p4d, pud) pgd_populate(mm, p4d, pud) -#define p4d_populate_safe(mm, p4d, pud) pgd_populate(mm, p4d, pud) -#define p4d_page(p4d) pgd_page(p4d) -#define p4d_page_vaddr(p4d) pgd_page_vaddr(p4d) - -#define __p4d(x) __pgd(x) -#define set_p4d(p4dp, p4d) set_pgd(p4dp, p4d) - -#undef p4d_free_tlb -#define p4d_free_tlb(tlb, x, addr) do { } while (0) -#define p4d_free(mm, x) do { } while (0) - -#undef p4d_addr_end -#define p4d_addr_end(addr, end) (end) - -#endif diff --git a/include/linux/mm.h b/include/linux/mm.h index 5a323422d783..f794b77df1ca 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2060,11 +2060,6 @@ int __pte_alloc_kernel(pmd_t *pmd); #if defined(CONFIG_MMU) -/* - * The following ifdef needed to get the 5level-fixup.h header to work. - * Remove it when 5level-fixup.h has been removed. - */ -#ifndef __ARCH_HAS_5LEVEL_HACK static inline p4d_t *p4d_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long address) { @@ -2078,7 +2073,6 @@ static inline pud_t *pud_alloc(struct mm_struct *mm, p4d_t *p4d, return (unlikely(p4d_none(*p4d)) && __pud_alloc(mm, p4d, address)) ? NULL : pud_offset(p4d, address); } -#endif /* !__ARCH_HAS_5LEVEL_HACK */ static inline pmd_t *pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address) { diff --git a/mm/kasan/init.c b/mm/kasan/init.c index ce45c491ebcd..fe6be0be1f76 100644 --- a/mm/kasan/init.c +++ b/mm/kasan/init.c @@ -250,20 +250,9 @@ int __ref kasan_populate_early_shadow(const void *shadow_start, * 3,2 - level page tables where we don't have * puds,pmds, so pgd_populate(), pud_populate() * is noops. - * - * The ifndef is required to avoid build breakage. - * - * With 5level-fixup.h, pgd_populate() is not nop and - * we reference kasan_early_shadow_p4d. It's not defined - * unless 5-level paging enabled. - * - * The ifndef can be dropped once all KASAN-enabled - * architectures will switch to pgtable-nop4d.h. */ -#ifndef __ARCH_HAS_5LEVEL_HACK pgd_populate(&init_mm, pgd, lm_alias(kasan_early_shadow_p4d)); -#endif p4d = p4d_offset(pgd, addr); p4d_populate(&init_mm, p4d, lm_alias(kasan_early_shadow_pud)); diff --git a/mm/memory.c b/mm/memory.c index f703fe8c8346..379277c631b4 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -4434,19 +4434,11 @@ int __pud_alloc(struct mm_struct *mm, p4d_t *p4d, unsigned long address) smp_wmb(); /* See comment in __pte_alloc */ spin_lock(&mm->page_table_lock); -#ifndef __ARCH_HAS_5LEVEL_HACK if (!p4d_present(*p4d)) { mm_inc_nr_puds(mm); p4d_populate(mm, p4d, new); } else /* Another has populated it */ pud_free(mm, new); -#else - if (!pgd_present(*p4d)) { - mm_inc_nr_puds(mm); - pgd_populate(mm, p4d, new); - } else /* Another has populated it */ - pud_free(mm, new); -#endif /* __ARCH_HAS_5LEVEL_HACK */ spin_unlock(&mm->page_table_lock); return 0; } -- 2.25.1 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=-9.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 179B8C2BB85 for ; Tue, 14 Apr 2020 16:45:36 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id BC49820656 for ; Tue, 14 Apr 2020 16:45:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="TIU3Y4/B" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BC49820656 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 491rvc6pjrzDqmT for ; Wed, 15 Apr 2020 02:45:32 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=198.145.29.99; helo=mail.kernel.org; envelope-from=rppt@kernel.org; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=kernel.org Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=default header.b=TIU3Y4/B; dkim-atps=neutral Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 491qP44Sm9zDqTh for ; Wed, 15 Apr 2020 01:37:28 +1000 (AEST) Received: from aquarius.haifa.ibm.com (nesher1.haifa.il.ibm.com [195.110.40.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id B0989206D5; Tue, 14 Apr 2020 15:37:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586878645; bh=CqaKK6+aVg5D1Nr505BsEp2b4ZBD+GLgCm9Y6FhaO5k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TIU3Y4/BP8R5HFjWKB4Rmbnxn+YL/C+cyvm9VFW4zfGVaOrEFBPnfTQvvacGktioX gSlAJkOtV7YH1cGIDUV9ajgtcnBzYrWnAUYHC9A961Ty8BmpAPQOn2t383YSjR0zKg 9FVQAlTRoUWPWY9rs58gJHD/LVWxwGErlNZP2VZc= From: Mike Rapoport To: Andrew Morton Subject: [PATCH v4 14/14] mm: remove __ARCH_HAS_5LEVEL_HACK and include/asm-generic/5level-fixup.h Date: Tue, 14 Apr 2020 18:34:55 +0300 Message-Id: <20200414153455.21744-15-rppt@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200414153455.21744-1-rppt@kernel.org> References: <20200414153455.21744-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Rich Felker , linux-ia64@vger.kernel.org, Geert Uytterhoeven , linux-sh@vger.kernel.org, linux-mm@kvack.org, Paul Mackerras , linux-hexagon@vger.kernel.org, Will Deacon , kvmarm@lists.cs.columbia.edu, Jonas Bonn , linux-arch@vger.kernel.org, Brian Cain , Marc Zyngier , Russell King , Ley Foon Tan , Mike Rapoport , Catalin Marinas , Julien Thierry , uclinux-h8-devel@lists.sourceforge.jp, Fenghua Yu , Arnd Bergmann , Suzuki K Poulose , kvm-ppc@vger.kernel.org, Stefan Kristiansson , openrisc@lists.librecores.org, Stafford Horne , Guan Xuetao , linux-arm-kernel@lists.infradead.org, Tony Luck , Yoshinori Sato , linux-kernel@vger.kernel.org, James Morse , nios2-dev@lists.rocketboards.org, linuxppc-dev@lists.ozlabs.org, Mike Rapoport Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" From: Mike Rapoport There are no architectures that use include/asm-generic/5level-fixup.h therefore it can be removed along with __ARCH_HAS_5LEVEL_HACK define and the code it surrounds Signed-off-by: Mike Rapoport --- include/asm-generic/5level-fixup.h | 58 ------------------------------ include/linux/mm.h | 6 ---- mm/kasan/init.c | 11 ------ mm/memory.c | 8 ----- 4 files changed, 83 deletions(-) delete mode 100644 include/asm-generic/5level-fixup.h diff --git a/include/asm-generic/5level-fixup.h b/include/asm-generic/5level-fixup.h deleted file mode 100644 index 4c74b1c1d13b..000000000000 --- a/include/asm-generic/5level-fixup.h +++ /dev/null @@ -1,58 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _5LEVEL_FIXUP_H -#define _5LEVEL_FIXUP_H - -#define __ARCH_HAS_5LEVEL_HACK -#define __PAGETABLE_P4D_FOLDED 1 - -#define P4D_SHIFT PGDIR_SHIFT -#define P4D_SIZE PGDIR_SIZE -#define P4D_MASK PGDIR_MASK -#define MAX_PTRS_PER_P4D 1 -#define PTRS_PER_P4D 1 - -#define p4d_t pgd_t - -#define pud_alloc(mm, p4d, address) \ - ((unlikely(pgd_none(*(p4d))) && __pud_alloc(mm, p4d, address)) ? \ - NULL : pud_offset(p4d, address)) - -#define p4d_alloc(mm, pgd, address) (pgd) -#define p4d_offset(pgd, start) (pgd) - -#ifndef __ASSEMBLY__ -static inline int p4d_none(p4d_t p4d) -{ - return 0; -} - -static inline int p4d_bad(p4d_t p4d) -{ - return 0; -} - -static inline int p4d_present(p4d_t p4d) -{ - return 1; -} -#endif - -#define p4d_ERROR(p4d) do { } while (0) -#define p4d_clear(p4d) pgd_clear(p4d) -#define p4d_val(p4d) pgd_val(p4d) -#define p4d_populate(mm, p4d, pud) pgd_populate(mm, p4d, pud) -#define p4d_populate_safe(mm, p4d, pud) pgd_populate(mm, p4d, pud) -#define p4d_page(p4d) pgd_page(p4d) -#define p4d_page_vaddr(p4d) pgd_page_vaddr(p4d) - -#define __p4d(x) __pgd(x) -#define set_p4d(p4dp, p4d) set_pgd(p4dp, p4d) - -#undef p4d_free_tlb -#define p4d_free_tlb(tlb, x, addr) do { } while (0) -#define p4d_free(mm, x) do { } while (0) - -#undef p4d_addr_end -#define p4d_addr_end(addr, end) (end) - -#endif diff --git a/include/linux/mm.h b/include/linux/mm.h index 5a323422d783..f794b77df1ca 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2060,11 +2060,6 @@ int __pte_alloc_kernel(pmd_t *pmd); #if defined(CONFIG_MMU) -/* - * The following ifdef needed to get the 5level-fixup.h header to work. - * Remove it when 5level-fixup.h has been removed. - */ -#ifndef __ARCH_HAS_5LEVEL_HACK static inline p4d_t *p4d_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long address) { @@ -2078,7 +2073,6 @@ static inline pud_t *pud_alloc(struct mm_struct *mm, p4d_t *p4d, return (unlikely(p4d_none(*p4d)) && __pud_alloc(mm, p4d, address)) ? NULL : pud_offset(p4d, address); } -#endif /* !__ARCH_HAS_5LEVEL_HACK */ static inline pmd_t *pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address) { diff --git a/mm/kasan/init.c b/mm/kasan/init.c index ce45c491ebcd..fe6be0be1f76 100644 --- a/mm/kasan/init.c +++ b/mm/kasan/init.c @@ -250,20 +250,9 @@ int __ref kasan_populate_early_shadow(const void *shadow_start, * 3,2 - level page tables where we don't have * puds,pmds, so pgd_populate(), pud_populate() * is noops. - * - * The ifndef is required to avoid build breakage. - * - * With 5level-fixup.h, pgd_populate() is not nop and - * we reference kasan_early_shadow_p4d. It's not defined - * unless 5-level paging enabled. - * - * The ifndef can be dropped once all KASAN-enabled - * architectures will switch to pgtable-nop4d.h. */ -#ifndef __ARCH_HAS_5LEVEL_HACK pgd_populate(&init_mm, pgd, lm_alias(kasan_early_shadow_p4d)); -#endif p4d = p4d_offset(pgd, addr); p4d_populate(&init_mm, p4d, lm_alias(kasan_early_shadow_pud)); diff --git a/mm/memory.c b/mm/memory.c index f703fe8c8346..379277c631b4 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -4434,19 +4434,11 @@ int __pud_alloc(struct mm_struct *mm, p4d_t *p4d, unsigned long address) smp_wmb(); /* See comment in __pte_alloc */ spin_lock(&mm->page_table_lock); -#ifndef __ARCH_HAS_5LEVEL_HACK if (!p4d_present(*p4d)) { mm_inc_nr_puds(mm); p4d_populate(mm, p4d, new); } else /* Another has populated it */ pud_free(mm, new); -#else - if (!pgd_present(*p4d)) { - mm_inc_nr_puds(mm); - pgd_populate(mm, p4d, new); - } else /* Another has populated it */ - pud_free(mm, new); -#endif /* __ARCH_HAS_5LEVEL_HACK */ spin_unlock(&mm->page_table_lock); return 0; } -- 2.25.1 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=-10.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 334BFC2BA19 for ; Tue, 14 Apr 2020 15:39:34 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 05D0320678 for ; Tue, 14 Apr 2020 15:39:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="OzgfDFIb"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="TIU3Y4/B" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 05D0320678 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=6oMKHMcHUybEOOAxNUAmNFbpw5Ng0IxqZZWPl6OmzPg=; b=OzgfDFIbu7aLgJ UV9UFCQXP/RbaZsFBHeQ4p4V79rwDzaAzGk2WBfeOrTEtEpGMn65xfmYxj8ieTM18rt+XEkDv0UWz B+s9h/51x7+A9PZ0YMkSYk3nYc29X0IFY9FhnlTGFE8uTtzrsqJjFcePc0BWgTU/zw838/4+9tWS0 fO+TbR4qbICf4eF81kFeQW7ZATDGnOfY3KR1DNlTpq9m6MUga1Ejr1yhcynb98LMRC5ozsTtV2fBG ywcHPOwbh3RrvBR1y3DX+fINz6wmU/P3akIY7OBBP2nsy38prhS8lH4+41KelBRvlziL2OndmihA2 UcC2Ys6ito9ZNHwX208A==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jONet-000547-BZ; Tue, 14 Apr 2020 15:39:31 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jONcs-000332-Sf for linux-arm-kernel@lists.infradead.org; Tue, 14 Apr 2020 15:37:31 +0000 Received: from aquarius.haifa.ibm.com (nesher1.haifa.il.ibm.com [195.110.40.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id B0989206D5; Tue, 14 Apr 2020 15:37:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586878645; bh=CqaKK6+aVg5D1Nr505BsEp2b4ZBD+GLgCm9Y6FhaO5k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TIU3Y4/BP8R5HFjWKB4Rmbnxn+YL/C+cyvm9VFW4zfGVaOrEFBPnfTQvvacGktioX gSlAJkOtV7YH1cGIDUV9ajgtcnBzYrWnAUYHC9A961Ty8BmpAPQOn2t383YSjR0zKg 9FVQAlTRoUWPWY9rs58gJHD/LVWxwGErlNZP2VZc= From: Mike Rapoport To: Andrew Morton Subject: [PATCH v4 14/14] mm: remove __ARCH_HAS_5LEVEL_HACK and include/asm-generic/5level-fixup.h Date: Tue, 14 Apr 2020 18:34:55 +0300 Message-Id: <20200414153455.21744-15-rppt@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200414153455.21744-1-rppt@kernel.org> References: <20200414153455.21744-1-rppt@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200414_083727_103797_238E22C4 X-CRM114-Status: GOOD ( 11.79 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Rich Felker , linux-ia64@vger.kernel.org, Geert Uytterhoeven , linux-sh@vger.kernel.org, Benjamin Herrenschmidt , linux-mm@kvack.org, Paul Mackerras , linux-hexagon@vger.kernel.org, Will Deacon , kvmarm@lists.cs.columbia.edu, Jonas Bonn , linux-arch@vger.kernel.org, Brian Cain , Marc Zyngier , Russell King , Ley Foon Tan , Mike Rapoport , Catalin Marinas , Julien Thierry , uclinux-h8-devel@lists.sourceforge.jp, Fenghua Yu , Arnd Bergmann , Suzuki K Poulose , kvm-ppc@vger.kernel.org, Stefan Kristiansson , openrisc@lists.librecores.org, Stafford Horne , Guan Xuetao , linux-arm-kernel@lists.infradead.org, Christophe Leroy , Tony Luck , Yoshinori Sato , linux-kernel@vger.kernel.org, James Morse , Michael Ellerman , nios2-dev@lists.rocketboards.org, linuxppc-dev@lists.ozlabs.org, Mike Rapoport Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Mike Rapoport There are no architectures that use include/asm-generic/5level-fixup.h therefore it can be removed along with __ARCH_HAS_5LEVEL_HACK define and the code it surrounds Signed-off-by: Mike Rapoport --- include/asm-generic/5level-fixup.h | 58 ------------------------------ include/linux/mm.h | 6 ---- mm/kasan/init.c | 11 ------ mm/memory.c | 8 ----- 4 files changed, 83 deletions(-) delete mode 100644 include/asm-generic/5level-fixup.h diff --git a/include/asm-generic/5level-fixup.h b/include/asm-generic/5level-fixup.h deleted file mode 100644 index 4c74b1c1d13b..000000000000 --- a/include/asm-generic/5level-fixup.h +++ /dev/null @@ -1,58 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _5LEVEL_FIXUP_H -#define _5LEVEL_FIXUP_H - -#define __ARCH_HAS_5LEVEL_HACK -#define __PAGETABLE_P4D_FOLDED 1 - -#define P4D_SHIFT PGDIR_SHIFT -#define P4D_SIZE PGDIR_SIZE -#define P4D_MASK PGDIR_MASK -#define MAX_PTRS_PER_P4D 1 -#define PTRS_PER_P4D 1 - -#define p4d_t pgd_t - -#define pud_alloc(mm, p4d, address) \ - ((unlikely(pgd_none(*(p4d))) && __pud_alloc(mm, p4d, address)) ? \ - NULL : pud_offset(p4d, address)) - -#define p4d_alloc(mm, pgd, address) (pgd) -#define p4d_offset(pgd, start) (pgd) - -#ifndef __ASSEMBLY__ -static inline int p4d_none(p4d_t p4d) -{ - return 0; -} - -static inline int p4d_bad(p4d_t p4d) -{ - return 0; -} - -static inline int p4d_present(p4d_t p4d) -{ - return 1; -} -#endif - -#define p4d_ERROR(p4d) do { } while (0) -#define p4d_clear(p4d) pgd_clear(p4d) -#define p4d_val(p4d) pgd_val(p4d) -#define p4d_populate(mm, p4d, pud) pgd_populate(mm, p4d, pud) -#define p4d_populate_safe(mm, p4d, pud) pgd_populate(mm, p4d, pud) -#define p4d_page(p4d) pgd_page(p4d) -#define p4d_page_vaddr(p4d) pgd_page_vaddr(p4d) - -#define __p4d(x) __pgd(x) -#define set_p4d(p4dp, p4d) set_pgd(p4dp, p4d) - -#undef p4d_free_tlb -#define p4d_free_tlb(tlb, x, addr) do { } while (0) -#define p4d_free(mm, x) do { } while (0) - -#undef p4d_addr_end -#define p4d_addr_end(addr, end) (end) - -#endif diff --git a/include/linux/mm.h b/include/linux/mm.h index 5a323422d783..f794b77df1ca 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2060,11 +2060,6 @@ int __pte_alloc_kernel(pmd_t *pmd); #if defined(CONFIG_MMU) -/* - * The following ifdef needed to get the 5level-fixup.h header to work. - * Remove it when 5level-fixup.h has been removed. - */ -#ifndef __ARCH_HAS_5LEVEL_HACK static inline p4d_t *p4d_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long address) { @@ -2078,7 +2073,6 @@ static inline pud_t *pud_alloc(struct mm_struct *mm, p4d_t *p4d, return (unlikely(p4d_none(*p4d)) && __pud_alloc(mm, p4d, address)) ? NULL : pud_offset(p4d, address); } -#endif /* !__ARCH_HAS_5LEVEL_HACK */ static inline pmd_t *pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address) { diff --git a/mm/kasan/init.c b/mm/kasan/init.c index ce45c491ebcd..fe6be0be1f76 100644 --- a/mm/kasan/init.c +++ b/mm/kasan/init.c @@ -250,20 +250,9 @@ int __ref kasan_populate_early_shadow(const void *shadow_start, * 3,2 - level page tables where we don't have * puds,pmds, so pgd_populate(), pud_populate() * is noops. - * - * The ifndef is required to avoid build breakage. - * - * With 5level-fixup.h, pgd_populate() is not nop and - * we reference kasan_early_shadow_p4d. It's not defined - * unless 5-level paging enabled. - * - * The ifndef can be dropped once all KASAN-enabled - * architectures will switch to pgtable-nop4d.h. */ -#ifndef __ARCH_HAS_5LEVEL_HACK pgd_populate(&init_mm, pgd, lm_alias(kasan_early_shadow_p4d)); -#endif p4d = p4d_offset(pgd, addr); p4d_populate(&init_mm, p4d, lm_alias(kasan_early_shadow_pud)); diff --git a/mm/memory.c b/mm/memory.c index f703fe8c8346..379277c631b4 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -4434,19 +4434,11 @@ int __pud_alloc(struct mm_struct *mm, p4d_t *p4d, unsigned long address) smp_wmb(); /* See comment in __pte_alloc */ spin_lock(&mm->page_table_lock); -#ifndef __ARCH_HAS_5LEVEL_HACK if (!p4d_present(*p4d)) { mm_inc_nr_puds(mm); p4d_populate(mm, p4d, new); } else /* Another has populated it */ pud_free(mm, new); -#else - if (!pgd_present(*p4d)) { - mm_inc_nr_puds(mm); - pgd_populate(mm, p4d, new); - } else /* Another has populated it */ - pud_free(mm, new); -#endif /* __ARCH_HAS_5LEVEL_HACK */ spin_unlock(&mm->page_table_lock); return 0; } -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel 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=-9.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 34C9DC352BE for ; Tue, 14 Apr 2020 15:37:28 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id DD4502085B for ; Tue, 14 Apr 2020 15:37:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="TIU3Y4/B" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DD4502085B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 884158E0022; Tue, 14 Apr 2020 11:37:27 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 80CF78E0007; Tue, 14 Apr 2020 11:37:27 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 6DD7B8E0022; Tue, 14 Apr 2020 11:37:27 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0224.hostedemail.com [216.40.44.224]) by kanga.kvack.org (Postfix) with ESMTP id 531338E0007 for ; Tue, 14 Apr 2020 11:37:27 -0400 (EDT) Received: from smtpin13.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 1A84B2484 for ; Tue, 14 Apr 2020 15:37:27 +0000 (UTC) X-FDA: 76706864934.13.flame60_5e1c4b6e0ff0a X-HE-Tag: flame60_5e1c4b6e0ff0a X-Filterd-Recvd-Size: 7531 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf44.hostedemail.com (Postfix) with ESMTP for ; Tue, 14 Apr 2020 15:37:26 +0000 (UTC) Received: from aquarius.haifa.ibm.com (nesher1.haifa.il.ibm.com [195.110.40.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id B0989206D5; Tue, 14 Apr 2020 15:37:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586878645; bh=CqaKK6+aVg5D1Nr505BsEp2b4ZBD+GLgCm9Y6FhaO5k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TIU3Y4/BP8R5HFjWKB4Rmbnxn+YL/C+cyvm9VFW4zfGVaOrEFBPnfTQvvacGktioX gSlAJkOtV7YH1cGIDUV9ajgtcnBzYrWnAUYHC9A961Ty8BmpAPQOn2t383YSjR0zKg 9FVQAlTRoUWPWY9rs58gJHD/LVWxwGErlNZP2VZc= From: Mike Rapoport To: Andrew Morton Cc: Arnd Bergmann , Benjamin Herrenschmidt , Brian Cain , Catalin Marinas , Christophe Leroy , Fenghua Yu , Geert Uytterhoeven , Guan Xuetao , James Morse , Jonas Bonn , Julien Thierry , Ley Foon Tan , Marc Zyngier , Michael Ellerman , Paul Mackerras , Rich Felker , Russell King , Stafford Horne , Stefan Kristiansson , Suzuki K Poulose , Tony Luck , Will Deacon , Yoshinori Sato , kvmarm@lists.cs.columbia.edu, kvm-ppc@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, linux-sh@vger.kernel.org, nios2-dev@lists.rocketboards.org, openrisc@lists.librecores.org, uclinux-h8-devel@lists.sourceforge.jp, Mike Rapoport , Mike Rapoport Subject: [PATCH v4 14/14] mm: remove __ARCH_HAS_5LEVEL_HACK and include/asm-generic/5level-fixup.h Date: Tue, 14 Apr 2020 18:34:55 +0300 Message-Id: <20200414153455.21744-15-rppt@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200414153455.21744-1-rppt@kernel.org> References: <20200414153455.21744-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Mike Rapoport There are no architectures that use include/asm-generic/5level-fixup.h therefore it can be removed along with __ARCH_HAS_5LEVEL_HACK define and the code it surrounds Signed-off-by: Mike Rapoport --- include/asm-generic/5level-fixup.h | 58 ------------------------------ include/linux/mm.h | 6 ---- mm/kasan/init.c | 11 ------ mm/memory.c | 8 ----- 4 files changed, 83 deletions(-) delete mode 100644 include/asm-generic/5level-fixup.h diff --git a/include/asm-generic/5level-fixup.h b/include/asm-generic/5le= vel-fixup.h deleted file mode 100644 index 4c74b1c1d13b..000000000000 --- a/include/asm-generic/5level-fixup.h +++ /dev/null @@ -1,58 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _5LEVEL_FIXUP_H -#define _5LEVEL_FIXUP_H - -#define __ARCH_HAS_5LEVEL_HACK -#define __PAGETABLE_P4D_FOLDED 1 - -#define P4D_SHIFT PGDIR_SHIFT -#define P4D_SIZE PGDIR_SIZE -#define P4D_MASK PGDIR_MASK -#define MAX_PTRS_PER_P4D 1 -#define PTRS_PER_P4D 1 - -#define p4d_t pgd_t - -#define pud_alloc(mm, p4d, address) \ - ((unlikely(pgd_none(*(p4d))) && __pud_alloc(mm, p4d, address)) ? \ - NULL : pud_offset(p4d, address)) - -#define p4d_alloc(mm, pgd, address) (pgd) -#define p4d_offset(pgd, start) (pgd) - -#ifndef __ASSEMBLY__ -static inline int p4d_none(p4d_t p4d) -{ - return 0; -} - -static inline int p4d_bad(p4d_t p4d) -{ - return 0; -} - -static inline int p4d_present(p4d_t p4d) -{ - return 1; -} -#endif - -#define p4d_ERROR(p4d) do { } while (0) -#define p4d_clear(p4d) pgd_clear(p4d) -#define p4d_val(p4d) pgd_val(p4d) -#define p4d_populate(mm, p4d, pud) pgd_populate(mm, p4d, pud) -#define p4d_populate_safe(mm, p4d, pud) pgd_populate(mm, p4d, pud) -#define p4d_page(p4d) pgd_page(p4d) -#define p4d_page_vaddr(p4d) pgd_page_vaddr(p4d) - -#define __p4d(x) __pgd(x) -#define set_p4d(p4dp, p4d) set_pgd(p4dp, p4d) - -#undef p4d_free_tlb -#define p4d_free_tlb(tlb, x, addr) do { } while (0) -#define p4d_free(mm, x) do { } while (0) - -#undef p4d_addr_end -#define p4d_addr_end(addr, end) (end) - -#endif diff --git a/include/linux/mm.h b/include/linux/mm.h index 5a323422d783..f794b77df1ca 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2060,11 +2060,6 @@ int __pte_alloc_kernel(pmd_t *pmd); =20 #if defined(CONFIG_MMU) =20 -/* - * The following ifdef needed to get the 5level-fixup.h header to work. - * Remove it when 5level-fixup.h has been removed. - */ -#ifndef __ARCH_HAS_5LEVEL_HACK static inline p4d_t *p4d_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long address) { @@ -2078,7 +2073,6 @@ static inline pud_t *pud_alloc(struct mm_struct *mm= , p4d_t *p4d, return (unlikely(p4d_none(*p4d)) && __pud_alloc(mm, p4d, address)) ? NULL : pud_offset(p4d, address); } -#endif /* !__ARCH_HAS_5LEVEL_HACK */ =20 static inline pmd_t *pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigne= d long address) { diff --git a/mm/kasan/init.c b/mm/kasan/init.c index ce45c491ebcd..fe6be0be1f76 100644 --- a/mm/kasan/init.c +++ b/mm/kasan/init.c @@ -250,20 +250,9 @@ int __ref kasan_populate_early_shadow(const void *sh= adow_start, * 3,2 - level page tables where we don't have * puds,pmds, so pgd_populate(), pud_populate() * is noops. - * - * The ifndef is required to avoid build breakage. - * - * With 5level-fixup.h, pgd_populate() is not nop and - * we reference kasan_early_shadow_p4d. It's not defined - * unless 5-level paging enabled. - * - * The ifndef can be dropped once all KASAN-enabled - * architectures will switch to pgtable-nop4d.h. */ -#ifndef __ARCH_HAS_5LEVEL_HACK pgd_populate(&init_mm, pgd, lm_alias(kasan_early_shadow_p4d)); -#endif p4d =3D p4d_offset(pgd, addr); p4d_populate(&init_mm, p4d, lm_alias(kasan_early_shadow_pud)); diff --git a/mm/memory.c b/mm/memory.c index f703fe8c8346..379277c631b4 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -4434,19 +4434,11 @@ int __pud_alloc(struct mm_struct *mm, p4d_t *p4d,= unsigned long address) smp_wmb(); /* See comment in __pte_alloc */ =20 spin_lock(&mm->page_table_lock); -#ifndef __ARCH_HAS_5LEVEL_HACK if (!p4d_present(*p4d)) { mm_inc_nr_puds(mm); p4d_populate(mm, p4d, new); } else /* Another has populated it */ pud_free(mm, new); -#else - if (!pgd_present(*p4d)) { - mm_inc_nr_puds(mm); - pgd_populate(mm, p4d, new); - } else /* Another has populated it */ - pud_free(mm, new); -#endif /* __ARCH_HAS_5LEVEL_HACK */ spin_unlock(&mm->page_table_lock); return 0; } --=20 2.25.1