From: Liav Rehana <liavr@xxxxxxxxxxxx> The instruction ld.as takes as operands a base address and an offset, and doesn't access the sum of these two, but the sum of the base address and a shifted version of the offset. This isn't what we want in that case, since it causes a bug during the push and pop of r25, since his actual offset is given during resume_user_mode_begin. Thus, the use of ld solves this problem. Signed-off-by: Liav Rehana <liavr at mellanox.com> --- arch/arc/include/asm/entry.h | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arc/include/asm/entry.h b/arch/arc/include/asm/entry.h index 337ab6d..9d8f85d 100644 --- a/arch/arc/include/asm/entry.h +++ b/arch/arc/include/asm/entry.h @@ -138,7 +138,7 @@ #ifdef CONFIG_ARC_CURR_IN_REG ; Retrieve orig r25 and save it with rest of callee_regs - ld.as r12, [r12, PT_user_r25] + ld r12, [r12, PT_user_r25] PUSH r12 #else PUSH r25 @@ -194,7 +194,7 @@ ; SP is back to start of pt_regs #ifdef CONFIG_ARC_CURR_IN_REG - st.as r12, [sp, PT_user_r25] + st r12, [sp, PT_user_r25] #endif .endm -- 1.7.1
