From e025ab842ec35225b1a8e163d1f311beb9e38ce9 Mon Sep 17 00:00:00 2001 From: Kefeng Wang Date: Tue, 18 Oct 2022 15:40:14 +0800 Subject: mm: remove kern_addr_valid() completely Most architectures (except arm64/x86/sparc) simply return 1 for kern_addr_valid(), which is only used in read_kcore(), and it calls copy_from_kernel_nofault() which could check whether the address is a valid kernel address. So as there is no need for kern_addr_valid(), let's remove it. Link: https://lkml.kernel.org/r/20221018074014.185687-1-wangkefeng.wang@huawei.com Signed-off-by: Kefeng Wang Acked-by: Geert Uytterhoeven [m68k] Acked-by: Heiko Carstens [s390] Acked-by: Christoph Hellwig Acked-by: Helge Deller [parisc] Acked-by: Michael Ellerman [powerpc] Acked-by: Guo Ren [csky] Acked-by: Catalin Marinas [arm64] Cc: Alexander Gordeev Cc: Andy Lutomirski Cc: Anton Ivanov Cc: Cc: Borislav Petkov Cc: Christian Borntraeger Cc: Christophe Leroy Cc: Chris Zankel Cc: Dave Hansen Cc: David S. Miller Cc: Dinh Nguyen Cc: Greg Ungerer Cc: H. Peter Anvin Cc: Huacai Chen Cc: Ingo Molnar Cc: Ivan Kokshaysky Cc: James Bottomley Cc: Johannes Berg Cc: Jonas Bonn Cc: Matt Turner Cc: Max Filippov Cc: Michal Simek Cc: Nicholas Piggin Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Peter Zijlstra Cc: Richard Henderson Cc: Richard Weinberger Cc: Rich Felker Cc: Russell King Cc: Stafford Horne Cc: Stefan Kristiansson Cc: Sven Schnelle Cc: Thomas Bogendoerfer Cc: Thomas Gleixner Cc: Vasily Gorbik Cc: Vineet Gupta Cc: Will Deacon Cc: Xuerui Wang Cc: Yoshinori Sato Signed-off-by: Andrew Morton --- arch/nios2/include/asm/pgtable.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'arch/nios2') diff --git a/arch/nios2/include/asm/pgtable.h b/arch/nios2/include/asm/pgtable.h index b3d45e815295..ab793bc517f5 100644 --- a/arch/nios2/include/asm/pgtable.h +++ b/arch/nios2/include/asm/pgtable.h @@ -249,8 +249,6 @@ static inline unsigned long pmd_page_vaddr(pmd_t pmd) #define __swp_entry_to_pte(swp) ((pte_t) { (swp).val }) #define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) }) -#define kern_addr_valid(addr) (1) - extern void __init paging_init(void); extern void __init mmu_init(void); -- cgit v1.2.3 From 93d38b72e4c1a518f46fd6dfcb5ad7c5003fa372 Mon Sep 17 00:00:00 2001 From: Kefeng Wang Date: Wed, 19 Oct 2022 11:49:41 +0800 Subject: nios2: remove unused INIT_MMAP MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Patch series "mm: cleanup with VM_ACCESS_FLAGS". This patch (of 5): It seems that INIT_MMAP is gone in 2.4.10, not sure, anyways, it is useless now, kill it. Link: https://lkml.kernel.org/r/20221019034945.93081-1-wangkefeng.wang@huawei.com Link: https://lkml.kernel.org/r/20221019034945.93081-2-wangkefeng.wang@huawei.com Signed-off-by: Kefeng Wang Cc: Dinh Nguyen Cc: Dave Hansen Cc: Jarkko Sakkinen Cc: Kefeng Wang Cc: Alex Deucher Cc: "Christian König" Cc: Daniel Vetter Cc: David Airlie Cc: "Pan, Xinhui" Signed-off-by: Andrew Morton --- arch/nios2/include/asm/processor.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'arch/nios2') diff --git a/arch/nios2/include/asm/processor.h b/arch/nios2/include/asm/processor.h index 8916d93d5c2d..eb44130364a9 100644 --- a/arch/nios2/include/asm/processor.h +++ b/arch/nios2/include/asm/processor.h @@ -50,9 +50,6 @@ struct thread_struct { unsigned long kpsr; }; -#define INIT_MMAP \ - { &init_mm, (0), (0), __pgprot(0x0), VM_READ | VM_WRITE | VM_EXEC } - # define INIT_THREAD { \ .kregs = NULL, \ .ksp = 0, \ -- cgit v1.2.3 From 22c4e80466eb88cff283ed50a5d0b0ff1654d0c3 Mon Sep 17 00:00:00 2001 From: Feiyang Chen Date: Thu, 27 Oct 2022 20:52:50 +0800 Subject: MIPS&LoongArch&NIOS2: adjust prototypes of p?d_init() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Patch series "mm/sparse-vmemmap: Generalise helpers and enable for LoongArch", v14. This series is in order to enable sparse-vmemmap for LoongArch. But LoongArch cannot use generic helpers directly because MIPS&LoongArch need to call pgd_init()/pud_init()/pmd_init() when populating page tables. So we adjust the prototypes of p?d_init() to make generic helpers can call them, then enable sparse-vmemmap with generic helpers, and to be further, generalise vmemmap_populate_hugepages() for ARM64, X86 and LoongArch. This patch (of 4): We are preparing to add sparse vmemmap support to LoongArch. MIPS and LoongArch need to call pgd_init()/pud_init()/pmd_init() when populating page tables, so adjust their prototypes to make generic helpers can call them. NIOS2 declares pmd_init() but doesn't use, just remove it to avoid build errors. Link: https://lkml.kernel.org/r/20221027125253.3458989-1-chenhuacai@loongson.cn Link: https://lkml.kernel.org/r/20221027125253.3458989-2-chenhuacai@loongson.cn Signed-off-by: Feiyang Chen Signed-off-by: Huacai Chen Reviewed-by: Jiaxun Yang Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Arnd Bergmann Cc: Andy Lutomirski Cc: Catalin Marinas Cc: Dave Hansen Cc: Dinh Nguyen Cc: Guo Ren Cc: Peter Zijlstra Cc: Thomas Bogendoerfer Cc: Will Deacon Cc: Xuefeng Li Cc: Xuerui Wang Cc: Min Zhou Cc: Muchun Song Signed-off-by: Andrew Morton --- arch/nios2/include/asm/pgalloc.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'arch/nios2') diff --git a/arch/nios2/include/asm/pgalloc.h b/arch/nios2/include/asm/pgalloc.h index 3c4ae74d5798..ecd1657bb2ce 100644 --- a/arch/nios2/include/asm/pgalloc.h +++ b/arch/nios2/include/asm/pgalloc.h @@ -26,11 +26,6 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, set_pmd(pmd, __pmd((unsigned long)page_address(pte))); } -/* - * Initialize a new pmd table with invalid pointers. - */ -extern void pmd_init(unsigned long page, unsigned long pagetable); - extern pgd_t *pgd_alloc(struct mm_struct *mm); #define __pte_free_tlb(tlb, pte, addr) \ -- cgit v1.2.3