Messages in this thread Patch in this message | | | From | Samuel Holland <> | Subject | [PATCH 1/4] riscv: Fix TASK_SIZE on 64-bit NOMMU | Date | Mon, 26 Feb 2024 16:34:46 -0800 |
| |
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 <samuel.holland@sifive.com> ---
arch/riscv/include/asm/pgtable.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
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 -- 2.43.0
| |