diff options
| author | Stuart Menefy <stuart.menefy@codasip.com> | 2024-06-24 13:17:23 +0100 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2024-09-14 01:08:56 -0700 |
| commit | d6a1928134a1c626ff369129d7a80951b2949a48 (patch) | |
| tree | cd2e84124c0782b2983a2c1bd339261aecafef8b /arch/riscv | |
| parent | 7587a3602bf2f12e798ea955b17521948ddb56a5 (diff) | |
riscv: Remove redundant restriction on memory size
The original reason for reserving the top 4GiB of the direct map
(space for modules/BPF/kernel) hasn't applied since the address
map was reworked for KASAN.
Signed-off-by: Stuart Menefy <stuart.menefy@codasip.com>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20240624121723.2186279-1-stuart.menefy@codasip.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv')
| -rw-r--r-- | arch/riscv/mm/init.c | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c index f43139db82a9..0e56725377a4 100644 --- a/arch/riscv/mm/init.c +++ b/arch/riscv/mm/init.c @@ -1132,13 +1132,7 @@ asmlinkage void __init setup_vm(uintptr_t dtb_pa) kernel_map.va_pa_offset = IS_ENABLED(CONFIG_64BIT) ? 0UL : PAGE_OFFSET - kernel_map.phys_addr; - /* - * The default maximal physical memory size is KERN_VIRT_SIZE for 32-bit - * kernel, whereas for 64-bit kernel, the end of the virtual address - * space is occupied by the modules/BPF/kernel mappings which reduces - * the available size of the linear mapping. - */ - memory_limit = KERN_VIRT_SIZE - (IS_ENABLED(CONFIG_64BIT) ? SZ_4G : 0); + memory_limit = KERN_VIRT_SIZE; /* Sanity check alignment and size */ BUG_ON((PAGE_OFFSET % PGDIR_SIZE) != 0); |