Messages in this thread Patch in this message | | | From | Christophe Leroy <> | Subject | [PATCH v1 06/10] powerpc/mm: make ioremap_bot common to all | Date | Tue, 13 Aug 2019 20:11:39 +0000 (UTC) |
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Drop multiple definitions of ioremap_bot and make one common to all subarches.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> --- arch/powerpc/include/asm/book3s/32/pgtable.h | 2 -- arch/powerpc/include/asm/book3s/64/pgtable.h | 1 - arch/powerpc/include/asm/nohash/32/pgtable.h | 2 -- arch/powerpc/include/asm/pgtable.h | 2 ++ arch/powerpc/mm/ioremap.c | 3 +++ arch/powerpc/mm/mmu_decl.h | 1 - arch/powerpc/mm/nohash/tlb.c | 2 ++ arch/powerpc/mm/pgtable_32.c | 3 --- arch/powerpc/mm/pgtable_64.c | 3 --- 9 files changed, 7 insertions(+), 12 deletions(-)
diff --git a/arch/powerpc/include/asm/book3s/32/pgtable.h b/arch/powerpc/include/asm/book3s/32/pgtable.h index 838de59f6754..aa1bc5f8da90 100644 --- a/arch/powerpc/include/asm/book3s/32/pgtable.h +++ b/arch/powerpc/include/asm/book3s/32/pgtable.h @@ -201,8 +201,6 @@ int map_kernel_page(unsigned long va, phys_addr_t pa, pgprot_t prot); #include <linux/sched.h> #include <linux/threads.h> -extern unsigned long ioremap_bot; - /* Bits to mask out from a PGD to get to the PUD page */ #define PGD_MASKED_BITS 0 diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h index 8308f32e9782..11819e3c755e 100644 --- a/arch/powerpc/include/asm/book3s/64/pgtable.h +++ b/arch/powerpc/include/asm/book3s/64/pgtable.h @@ -289,7 +289,6 @@ extern unsigned long __kernel_io_end; #define KERN_IO_END __kernel_io_end extern struct page *vmemmap; -extern unsigned long ioremap_bot; extern unsigned long pci_io_base; #endif /* __ASSEMBLY__ */ diff --git a/arch/powerpc/include/asm/nohash/32/pgtable.h b/arch/powerpc/include/asm/nohash/32/pgtable.h index 0284f8f5305f..7ce2a7c9fade 100644 --- a/arch/powerpc/include/asm/nohash/32/pgtable.h +++ b/arch/powerpc/include/asm/nohash/32/pgtable.h @@ -11,8 +11,6 @@ #include <asm/mmu.h> /* For sub-arch specific PPC_PIN_SIZE */ #include <asm/asm-405.h> -extern unsigned long ioremap_bot; - #ifdef CONFIG_44x extern int icache_44x_need_flush; #endif diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h index c58ba7963688..c54bb68c1354 100644 --- a/arch/powerpc/include/asm/pgtable.h +++ b/arch/powerpc/include/asm/pgtable.h @@ -68,6 +68,8 @@ extern pgd_t swapper_pg_dir[]; extern void paging_init(void); +extern unsigned long ioremap_bot; + /* * kern_addr_valid is intended to indicate whether an address is a valid * kernel address. Most 32-bit archs define it as always true (like this) diff --git a/arch/powerpc/mm/ioremap.c b/arch/powerpc/mm/ioremap.c index a44d9e4c948a..0c23660522ca 100644 --- a/arch/powerpc/mm/ioremap.c +++ b/arch/powerpc/mm/ioremap.c @@ -3,6 +3,9 @@ #include <linux/io.h> #include <asm/io-workarounds.h> +unsigned long ioremap_bot; +EXPORT_SYMBOL(ioremap_bot); + void __iomem *__ioremap(phys_addr_t addr, unsigned long size, unsigned long flags) { return __ioremap_caller(addr, size, __pgprot(flags), __builtin_return_address(0)); diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h index 32c1a191c28a..6ee64d5e2824 100644 --- a/arch/powerpc/mm/mmu_decl.h +++ b/arch/powerpc/mm/mmu_decl.h @@ -108,7 +108,6 @@ extern u8 early_hash[]; #endif /* CONFIG_PPC32 */ -extern unsigned long ioremap_bot; extern unsigned long __max_low_memory; extern phys_addr_t __initial_memory_limit_addr; extern phys_addr_t total_memory; diff --git a/arch/powerpc/mm/nohash/tlb.c b/arch/powerpc/mm/nohash/tlb.c index d4acf6fa0596..350a54f70a37 100644 --- a/arch/powerpc/mm/nohash/tlb.c +++ b/arch/powerpc/mm/nohash/tlb.c @@ -704,6 +704,8 @@ static void __init early_init_mmu_global(void) * for use by the TLB miss code */ linear_map_top = memblock_end_of_DRAM(); + + ioremap_bot = IOREMAP_END; } static void __init early_mmu_set_memory_limit(void) diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c index 8126c2d1afbf..7efdb1dee19b 100644 --- a/arch/powerpc/mm/pgtable_32.c +++ b/arch/powerpc/mm/pgtable_32.c @@ -33,9 +33,6 @@ #include <mm/mmu_decl.h> -unsigned long ioremap_bot; -EXPORT_SYMBOL(ioremap_bot); /* aka VMALLOC_END */ - extern char etext[], _stext[], _sinittext[], _einittext[]; void __iomem * diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c index 0f0b1e1ea5ab..d631659c8859 100644 --- a/arch/powerpc/mm/pgtable_64.c +++ b/arch/powerpc/mm/pgtable_64.c @@ -99,9 +99,6 @@ unsigned long __pte_frag_nr; EXPORT_SYMBOL(__pte_frag_nr); unsigned long __pte_frag_size_shift; EXPORT_SYMBOL(__pte_frag_size_shift); -unsigned long ioremap_bot; -#else /* !CONFIG_PPC_BOOK3S_64 */ -unsigned long ioremap_bot = IOREMAP_END; #endif int __weak ioremap_range(unsigned long ea, phys_addr_t pa, unsigned long size, pgprot_t prot, int nid) -- 2.13.3
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