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authorNam Cao <namcao@linutronix.de>2024-05-08 21:19:17 +0200
committerPalmer Dabbelt <palmer@rivosinc.com>2024-08-14 13:12:33 -0700
commit57d76bc51fd80824bcc0c84a5b5ec944f1b51edd (patch)
tree318ad4f53dcc3deae6d5ebb86a3ed46c82d4da01 /arch
parent61119394631f219e23ce98bcc3eb993a64a8ea64 (diff)
riscv: change XIP's kernel_map.size to be size of the entire kernel
With XIP kernel, kernel_map.size is set to be only the size of data part of the kernel. This is inconsistent with "normal" kernel, who sets it to be the size of the entire kernel. More importantly, XIP kernel fails to boot if CONFIG_DEBUG_VIRTUAL is enabled, because there are checks on virtual addresses with the assumption that kernel_map.size is the size of the entire kernel (these checks are in arch/riscv/mm/physaddr.c). Change XIP's kernel_map.size to be the size of the entire kernel. Signed-off-by: Nam Cao <namcao@linutronix.de> Cc: <stable@vger.kernel.org> # v6.1+ Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com> Link: https://lore.kernel.org/r/20240508191917.2892064-1-namcao@linutronix.de Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/riscv/mm/init.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index 8b698d9609e7..eb0649a61b4c 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -927,7 +927,7 @@ static void __init create_kernel_page_table(pgd_t *pgdir,
PMD_SIZE, PAGE_KERNEL_EXEC);
/* Map the data in RAM */
- end_va = kernel_map.virt_addr + XIP_OFFSET + kernel_map.size;
+ end_va = kernel_map.virt_addr + kernel_map.size;
for (va = kernel_map.virt_addr + XIP_OFFSET; va < end_va; va += PMD_SIZE)
create_pgd_mapping(pgdir, va,
kernel_map.phys_addr + (va - (kernel_map.virt_addr + XIP_OFFSET)),
@@ -1096,7 +1096,7 @@ asmlinkage void __init setup_vm(uintptr_t dtb_pa)
phys_ram_base = CONFIG_PHYS_RAM_BASE;
kernel_map.phys_addr = (uintptr_t)CONFIG_PHYS_RAM_BASE;
- kernel_map.size = (uintptr_t)(&_end) - (uintptr_t)(&_sdata);
+ kernel_map.size = (uintptr_t)(&_end) - (uintptr_t)(&_start);
kernel_map.va_kernel_xip_pa_offset = kernel_map.virt_addr - kernel_map.xiprom;
#else