From patchwork Thu Jun 30 05:16:30 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anshuman Khandual X-Patchwork-Id: 12901119 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8B945CCA487 for ; Thu, 30 Jun 2022 05:22:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232548AbiF3FWs (ORCPT ); Thu, 30 Jun 2022 01:22:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40476 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232484AbiF3FW0 (ORCPT ); Thu, 30 Jun 2022 01:22:26 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 57C774162D; Wed, 29 Jun 2022 22:20:32 -0700 (PDT) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 532E71BC0; Wed, 29 Jun 2022 22:20:32 -0700 (PDT) Received: from a077893.blr.arm.com (unknown [10.162.41.8]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id D96BE3F66F; Wed, 29 Jun 2022 22:20:23 -0700 (PDT) From: Anshuman Khandual To: linux-mm@kvack.org, akpm@linux-foundation.org Cc: hch@infradead.org, christophe.leroy@csgroup.eu, Anshuman Khandual , linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, x86@kernel.org, openrisc@lists.librecores.org, linux-xtensa@linux-xtensa.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-parisc@vger.kernel.org, linux-alpha@vger.kernel.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-um@lists.infradead.org, linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org, Christoph Hellwig Subject: [PATCH V6 26/26] mm/mmap: Drop ARCH_HAS_VM_GET_PAGE_PROT Date: Thu, 30 Jun 2022 10:46:30 +0530 Message-Id: <20220630051630.1718927-27-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220630051630.1718927-1-anshuman.khandual@arm.com> References: <20220630051630.1718927-1-anshuman.khandual@arm.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org Now all the platforms enable ARCH_HAS_GET_PAGE_PROT. They define and export own vm_get_page_prot() whether custom or standard DECLARE_VM_GET_PAGE_PROT. Hence there is no need for default generic fallback for vm_get_page_prot(). Just drop this fallback and also ARCH_HAS_GET_PAGE_PROT mechanism. Cc: Andrew Morton Cc: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Christoph Hellwig Reviewed-by: Christophe Leroy Signed-off-by: Anshuman Khandual Reviewed-by: Geert Uytterhoeven Acked-by: Geert Uytterhoeven --- arch/alpha/Kconfig | 1 - arch/arc/Kconfig | 1 - arch/arm/Kconfig | 1 - arch/arm64/Kconfig | 1 - arch/csky/Kconfig | 1 - arch/hexagon/Kconfig | 1 - arch/ia64/Kconfig | 1 - arch/loongarch/Kconfig | 1 - arch/m68k/Kconfig | 1 - arch/microblaze/Kconfig | 1 - arch/mips/Kconfig | 1 - arch/nios2/Kconfig | 1 - arch/openrisc/Kconfig | 1 - arch/parisc/Kconfig | 1 - arch/powerpc/Kconfig | 1 - arch/riscv/Kconfig | 1 - arch/s390/Kconfig | 1 - arch/sh/Kconfig | 1 - arch/sparc/Kconfig | 1 - arch/um/Kconfig | 1 - arch/x86/Kconfig | 1 - arch/xtensa/Kconfig | 1 - include/linux/mm.h | 3 --- mm/Kconfig | 3 --- mm/mmap.c | 22 ---------------------- 25 files changed, 50 deletions(-) diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig index db1c8b329461..7d0d26b5b3f5 100644 --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -2,7 +2,6 @@ config ALPHA bool default y - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_32BIT_USTAT_F_TINODE select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_MIGHT_HAVE_PC_SERIO diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index 8be56a5d8a9b..9e3653253ef2 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -13,7 +13,6 @@ config ARC select ARCH_HAS_SETUP_DMA_OPS select ARCH_HAS_SYNC_DMA_FOR_CPU select ARCH_HAS_SYNC_DMA_FOR_DEVICE - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_SUPPORTS_ATOMIC_RMW if ARC_HAS_LLSC select ARCH_32BIT_OFF_T select BUILDTIME_TABLE_SORT diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index e153b6d4fc5b..7630ba9cb6cc 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -24,7 +24,6 @@ config ARM select ARCH_HAS_SYNC_DMA_FOR_CPU if SWIOTLB || !MMU select ARCH_HAS_TEARDOWN_DMA_OPS if MMU select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAVE_CUSTOM_GPIO_H select ARCH_HAVE_NMI_SAFE_CMPXCHG if CPU_V7 || CPU_V7M || CPU_V6K select ARCH_HAS_GCOV_PROFILE_ALL diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 1652a9800ebe..7030bf3f8d6f 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -45,7 +45,6 @@ config ARM64 select ARCH_HAS_SYSCALL_WRAPPER select ARCH_HAS_TEARDOWN_DMA_OPS if IOMMU_SUPPORT select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAS_ZONE_DMA_SET if EXPERT select ARCH_HAVE_ELF_PROT select ARCH_HAVE_NMI_SAFE_CMPXCHG diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig index 588b8a9c68ed..21d72b078eef 100644 --- a/arch/csky/Kconfig +++ b/arch/csky/Kconfig @@ -6,7 +6,6 @@ config CSKY select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_SYNC_DMA_FOR_CPU select ARCH_HAS_SYNC_DMA_FOR_DEVICE - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_USE_BUILTIN_BSWAP select ARCH_USE_QUEUED_RWLOCKS select ARCH_WANT_FRAME_POINTERS if !CPU_CK610 && $(cc-option,-mbacktrace) diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig index bc4ceecd0588..54eadf265178 100644 --- a/arch/hexagon/Kconfig +++ b/arch/hexagon/Kconfig @@ -6,7 +6,6 @@ config HEXAGON def_bool y select ARCH_32BIT_OFF_T select ARCH_HAS_SYNC_DMA_FOR_DEVICE - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_NO_PREEMPT select DMA_GLOBAL_POOL # Other pending projects/to-do items. diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 0510a5737711..cb93769a9f2a 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -12,7 +12,6 @@ config IA64 select ARCH_HAS_DMA_MARK_CLEAN select ARCH_HAS_STRNCPY_FROM_USER select ARCH_HAS_STRNLEN_USER - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_MIGHT_HAVE_PC_SERIO select ACPI diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index fd07b8e760ee..1920d52653b4 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -9,7 +9,6 @@ config LOONGARCH select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI select ARCH_HAS_PHYS_TO_DMA select ARCH_HAS_PTE_SPECIAL - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST select ARCH_INLINE_READ_LOCK if !PREEMPTION select ARCH_INLINE_READ_LOCK_BH if !PREEMPTION diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index 49aa0cf13e96..936cce42ae9a 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -7,7 +7,6 @@ config M68K select ARCH_HAS_CURRENT_STACK_POINTER select ARCH_HAS_DMA_PREP_COHERENT if HAS_DMA && MMU && !COLDFIRE select ARCH_HAS_SYNC_DMA_FOR_DEVICE if HAS_DMA - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS select ARCH_MIGHT_HAVE_PC_PARPORT if ISA select ARCH_NO_PREEMPT if !COLDFIRE diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig index 15f91ba8a0c4..8cf429ad1c84 100644 --- a/arch/microblaze/Kconfig +++ b/arch/microblaze/Kconfig @@ -7,7 +7,6 @@ config MICROBLAZE select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_SYNC_DMA_FOR_CPU select ARCH_HAS_SYNC_DMA_FOR_DEVICE - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_WANT_IPC_PARSE_VERSION select BUILDTIME_TABLE_SORT diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index d0b7eb11ec81..db09d45d59ec 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -14,7 +14,6 @@ config MIPS select ARCH_HAS_STRNLEN_USER select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST select ARCH_HAS_UBSAN_SANITIZE_ALL - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_KEEP_MEMBLOCK select ARCH_SUPPORTS_UPROBES diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig index e0459dffd218..4167f1eb4cd8 100644 --- a/arch/nios2/Kconfig +++ b/arch/nios2/Kconfig @@ -6,7 +6,6 @@ config NIOS2 select ARCH_HAS_SYNC_DMA_FOR_CPU select ARCH_HAS_SYNC_DMA_FOR_DEVICE select ARCH_HAS_DMA_SET_UNCACHED - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_NO_SWAP select COMMON_CLK select TIMER_OF diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig index fe0dfb50eb86..e814df4c483c 100644 --- a/arch/openrisc/Kconfig +++ b/arch/openrisc/Kconfig @@ -10,7 +10,6 @@ config OPENRISC select ARCH_HAS_DMA_SET_UNCACHED select ARCH_HAS_DMA_CLEAR_UNCACHED select ARCH_HAS_SYNC_DMA_FOR_DEVICE - select ARCH_HAS_VM_GET_PAGE_PROT select COMMON_CLK select OF select OF_EARLY_FLATTREE diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index 891d82393957..fa400055b2d5 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -12,7 +12,6 @@ config PARISC select ARCH_HAS_STRICT_KERNEL_RWX select ARCH_HAS_STRICT_MODULE_RWX select ARCH_HAS_UBSAN_SANITIZE_ALL - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAS_PTE_SPECIAL select ARCH_NO_SG_CHAIN select ARCH_SUPPORTS_HUGETLBFS if PA20 diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 1035d172c7dd..250b8658b2d4 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -140,7 +140,6 @@ config PPC select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST select ARCH_HAS_UACCESS_FLUSHCACHE select ARCH_HAS_UBSAN_SANITIZE_ALL - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAVE_NMI_SAFE_CMPXCHG select ARCH_KEEP_MEMBLOCK select ARCH_MIGHT_HAVE_PC_PARPORT diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 583389d4e43a..32ffef9f6e5b 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -32,7 +32,6 @@ config RISCV select ARCH_HAS_STRICT_MODULE_RWX if MMU && !XIP_KERNEL select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST select ARCH_HAS_UBSAN_SANITIZE_ALL - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT select ARCH_STACKWALK diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index c4481377ca83..91c0b80a8bf0 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -81,7 +81,6 @@ config S390 select ARCH_HAS_SYSCALL_WRAPPER select ARCH_HAS_UBSAN_SANITIZE_ALL select ARCH_HAS_VDSO_DATA - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAVE_NMI_SAFE_CMPXCHG select ARCH_INLINE_READ_LOCK select ARCH_INLINE_READ_LOCK_BH diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 91f3ea325388..5f220e903e5a 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -12,7 +12,6 @@ config SUPERH select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_PTE_SPECIAL select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HIBERNATION_POSSIBLE if MMU select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_WANT_IPC_PARSE_VERSION diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 09f868613a4d..9c1cce74953a 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -13,7 +13,6 @@ config 64BIT config SPARC bool default y - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI select ARCH_MIGHT_HAVE_PC_SERIO select DMA_OPS diff --git a/arch/um/Kconfig b/arch/um/Kconfig index 7fb43654e5b5..4ec22e156a2e 100644 --- a/arch/um/Kconfig +++ b/arch/um/Kconfig @@ -10,7 +10,6 @@ config UML select ARCH_HAS_KCOV select ARCH_HAS_STRNCPY_FROM_USER select ARCH_HAS_STRNLEN_USER - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_NO_PREEMPT select HAVE_ARCH_AUDITSYSCALL select HAVE_ARCH_SECCOMP_FILTER diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index be0b95e51df6..841e4843d0c4 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -94,7 +94,6 @@ config X86 select ARCH_HAS_SYNC_CORE_BEFORE_USERMODE select ARCH_HAS_SYSCALL_WRAPPER select ARCH_HAS_UBSAN_SANITIZE_ALL - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAS_DEBUG_WX select ARCH_HAS_ZONE_DMA_SET if EXPERT select ARCH_HAVE_NMI_SAFE_CMPXCHG diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index 4c0d83520ff1..0b0f0172cced 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -11,7 +11,6 @@ config XTENSA select ARCH_HAS_DMA_SET_UNCACHED if MMU select ARCH_HAS_STRNCPY_FROM_USER if !KASAN select ARCH_HAS_STRNLEN_USER - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_USE_MEMTEST select ARCH_USE_QUEUED_RWLOCKS select ARCH_USE_QUEUED_SPINLOCKS diff --git a/include/linux/mm.h b/include/linux/mm.h index 07b56995e0fe..4ccd29f6828f 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -424,9 +424,6 @@ extern unsigned int kobjsize(const void *objp); * mapping from the currently active vm_flags protection bits (the * low four bits) to a page protection mask.. */ -#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT -extern pgprot_t protection_map[16]; -#endif /* * The default fault flags that should be used by most of the diff --git a/mm/Kconfig b/mm/Kconfig index 169e64192e48..f47d257a053b 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -951,9 +951,6 @@ config ARCH_HAS_CURRENT_STACK_POINTER register alias named "current_stack_pointer", this config can be selected. -config ARCH_HAS_VM_GET_PAGE_PROT - bool - config ARCH_HAS_PTE_DEVMAP bool diff --git a/mm/mmap.c b/mm/mmap.c index 2cc722e162fa..02d6889f0ef6 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -81,28 +81,6 @@ static void unmap_region(struct mm_struct *mm, struct vm_area_struct *vma, struct vm_area_struct *prev, unsigned long start, unsigned long end); -#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT -pgprot_t protection_map[16] __ro_after_init = { - [VM_NONE] = __P000, - [VM_READ] = __P001, - [VM_WRITE] = __P010, - [VM_WRITE | VM_READ] = __P011, - [VM_EXEC] = __P100, - [VM_EXEC | VM_READ] = __P101, - [VM_EXEC | VM_WRITE] = __P110, - [VM_EXEC | VM_WRITE | VM_READ] = __P111, - [VM_SHARED] = __S000, - [VM_SHARED | VM_READ] = __S001, - [VM_SHARED | VM_WRITE] = __S010, - [VM_SHARED | VM_WRITE | VM_READ] = __S011, - [VM_SHARED | VM_EXEC] = __S100, - [VM_SHARED | VM_EXEC | VM_READ] = __S101, - [VM_SHARED | VM_EXEC | VM_WRITE] = __S110, - [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = __S111 -}; -DECLARE_VM_GET_PAGE_PROT -#endif /* CONFIG_ARCH_HAS_VM_GET_PAGE_PROT */ - static pgprot_t vm_pgprot_modify(pgprot_t oldprot, unsigned long vm_flags) { return pgprot_modify(oldprot, vm_get_page_prot(vm_flags));