From 6065e736f82c817c9a597a31ee67f0ce4628e948 Mon Sep 17 00:00:00 2001 From: Samuel Holland Date: Mon, 26 Feb 2024 16:34:46 -0800 Subject: riscv: Fix TASK_SIZE on 64-bit NOMMU On NOMMU, userspace memory can come from anywhere in physical RAM. The current definition of TASK_SIZE is wrong if any RAM exists above 4G, causing spurious failures in the userspace access routines. Fixes: 6bd33e1ece52 ("riscv: add nommu support") Fixes: c3f896dcf1e4 ("mm: switch the test_vmalloc module to use __vmalloc_node") Signed-off-by: Samuel Holland Reviewed-by: Jisheng Zhang Reviewed-by: Bo Gan Link: https://lore.kernel.org/r/20240227003630.3634533-2-samuel.holland@sifive.com Signed-off-by: Palmer Dabbelt --- arch/riscv/include/asm/pgtable.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/riscv') diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h index 0c94260b5d0c..a564a39e5676 100644 --- a/arch/riscv/include/asm/pgtable.h +++ b/arch/riscv/include/asm/pgtable.h @@ -882,7 +882,7 @@ static inline pte_t pte_swp_clear_exclusive(pte_t pte) #define PAGE_SHARED __pgprot(0) #define PAGE_KERNEL __pgprot(0) #define swapper_pg_dir NULL -#define TASK_SIZE 0xffffffffUL +#define TASK_SIZE _AC(-1, UL) #define VMALLOC_START _AC(0, UL) #define VMALLOC_END TASK_SIZE -- cgit v1.2.3