[PATCH] riscv: uaccess: Allow the last potential unrolled copy

From: Xiao Wang
Date: Wed Mar 13 2024 - 06:30:25 EST


When the dst buffer pointer points to the last accessible aligned addr, we
could still run another iteration of unrolled copy.

Signed-off-by: Xiao Wang <xiao.w.wang@xxxxxxxxx>
---
arch/riscv/lib/uaccess.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/lib/uaccess.S b/arch/riscv/lib/uaccess.S
index 2e665f8f8fcc..1399d797d81b 100644
--- a/arch/riscv/lib/uaccess.S
+++ b/arch/riscv/lib/uaccess.S
@@ -103,7 +103,7 @@ SYM_FUNC_START(fallback_scalar_usercopy)
fixup REG_S t4, 7*SZREG(a0), 10f
addi a0, a0, 8*SZREG
addi a1, a1, 8*SZREG
- bltu a0, t0, 2b
+ bleu a0, t0, 2b

addi t0, t0, 8*SZREG /* revert to original value */
j .Lbyte_copy_tail
--
2.25.1