Re: [U-Boot] [PATCH 15/19] riscv: Return to previous privilege level after trap handling

2018-11-14 Thread Auer, Lukas 
On Tue, 2018-11-13 at 00:22 -0800, Bin Meng wrote:
> At present the trap handler returns to M-mode only. Change to
> returning to previous privilege level instead.
> 
> Signed-off-by: Bin Meng 
> ---
> 
>  arch/riscv/cpu/mtrap.S | 3 ---
>  1 file changed, 3 deletions(-)
> 

Reviewed-by: Lukas Auer 
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[U-Boot] [PATCH 15/19] riscv: Return to previous privilege level after trap handling

2018-11-13 Thread Bin Meng 
At present the trap handler returns to M-mode only. Change to
returning to previous privilege level instead.

Signed-off-by: Bin Meng 
---

 arch/riscv/cpu/mtrap.S | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/riscv/cpu/mtrap.S b/arch/riscv/cpu/mtrap.S
index 6c0eac6..c9010c7 100644
--- a/arch/riscv/cpu/mtrap.S
+++ b/arch/riscv/cpu/mtrap.S
@@ -68,9 +68,6 @@ trap_entry:
jal handle_trap
csrw mepc, a0
 
-   /* Remain in M-mode after mret */
-   li t0, MSTATUS_MPP
-   csrs mstatus, t0
LREG x1,   1 * REGBYTES(sp)
LREG x3,   3 * REGBYTES(sp)
LREG x4,   4 * REGBYTES(sp)
-- 
2.7.4

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