diff options
| author | Radim Krčmář <rkrcmar@ventanamicro.com> | 2025-07-25 18:54:09 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-09-09 18:58:26 +0200 |
| commit | 8d164de928aa3e8337e4773b364c1425164ecd72 (patch) | |
| tree | 4c65341acd1e9beaa39f969f97fa112738cde618 | |
| parent | 489be48ea105912fbccadc77f553b374922db04d (diff) | |
riscv: use lw when reading int cpu in new_vmalloc_check
commit e108c8a94f3f958c877f6ec7a6052a893ae4aa98 upstream.
REG_L is wrong, because thread_info.cpu is 32-bit, not xlen-bit wide.
The struct currently has a hole after cpu, so little endian accesses
seemed fine.
Fixes: 503638e0babf ("riscv: Stop emitting preventive sfence.vma for new vmalloc mappings")
Cc: stable@vger.kernel.org
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Signed-off-by: Radim Krčmář <rkrcmar@ventanamicro.com>
Link: https://lore.kernel.org/r/20250725165410.2896641-4-rkrcmar@ventanamicro.com
Signed-off-by: Paul Walmsley <pjw@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/riscv/kernel/entry.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/riscv/kernel/entry.S b/arch/riscv/kernel/entry.S index 33a5a9f2a0d4..af483de85dfc 100644 --- a/arch/riscv/kernel/entry.S +++ b/arch/riscv/kernel/entry.S @@ -46,7 +46,7 @@ * a0 = &new_vmalloc[BIT_WORD(cpu)] * a1 = BIT_MASK(cpu) */ - REG_L a2, TASK_TI_CPU(tp) + lw a2, TASK_TI_CPU(tp) /* * Compute the new_vmalloc element position: * (cpu / 64) * 8 = (cpu >> 6) << 3 |