From 7cc8c75b54fa6d2c0a802b915feecad3abe6ddd7 Mon Sep 17 00:00:00 2001 From: Alexandre Ghiti Date: Thu, 18 Nov 2021 14:45:39 +0100 Subject: [PATCH] riscv: Make vmalloc/vmemmap end equal to the start of the next region We used to define VMALLOC_END equal to the start of the next region *minus one* which is inconsistent with the use of this define in the core code (for example, see the definitions of VMALLOC_TOTAL and is_vmalloc_addr). And then make the definition of VMEMMAP_END consistent with VMALLOC_END and all other regions actually. Signed-off-by: Alexandre Ghiti Reviewed-by: Jisheng Zhang Signed-off-by: Palmer Dabbelt --- arch/riscv/include/asm/pgtable.h | 4 ++-- arch/riscv/mm/fault.c | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h index bf204e7..db3f739 100644 --- a/arch/riscv/include/asm/pgtable.h +++ b/arch/riscv/include/asm/pgtable.h @@ -25,7 +25,7 @@ #endif #define VMALLOC_SIZE (KERN_VIRT_SIZE >> 1) -#define VMALLOC_END (PAGE_OFFSET - 1) +#define VMALLOC_END PAGE_OFFSET #define VMALLOC_START (PAGE_OFFSET - VMALLOC_SIZE) #define BPF_JIT_REGION_SIZE (SZ_128M) @@ -51,7 +51,7 @@ #define VMEMMAP_SHIFT \ (CONFIG_VA_BITS - PAGE_SHIFT - 1 + STRUCT_PAGE_MAX_SHIFT) #define VMEMMAP_SIZE BIT(VMEMMAP_SHIFT) -#define VMEMMAP_END (VMALLOC_START - 1) +#define VMEMMAP_END VMALLOC_START #define VMEMMAP_START (VMALLOC_START - VMEMMAP_SIZE) /* diff --git a/arch/riscv/mm/fault.c b/arch/riscv/mm/fault.c index aa08dd2..41ae0aa 100644 --- a/arch/riscv/mm/fault.c +++ b/arch/riscv/mm/fault.c @@ -235,7 +235,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs) * only copy the information from the master page table, * nothing more. */ - if (unlikely((addr >= VMALLOC_START) && (addr <= VMALLOC_END))) { + if (unlikely((addr >= VMALLOC_START) && (addr < VMALLOC_END))) { vmalloc_fault(regs, code, addr); return; } -- 2.7.4