diff options
| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-03-12 12:50:16 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-03-29 13:22:04 +1100 |
| commit | 0512aadd750acf72b8906973c34e7092642d4323 (patch) | |
| tree | ed3c797f791999cc279f35e5a25fb11dd5d980dd /arch/powerpc/kernel/entry_32.S | |
| parent | 0fc1e93481f67a49f67c9168b71842eeb0998b25 (diff) | |
powerpc/40x: Prepare normal exception handler for enabling MMU early
Ensure normal exception handler are able to manage stuff with
MMU enabled. For that we use CONFIG_VMAP_STACK related code
allthough there is no intention to really activate CONFIG_VMAP_STACK
on powerpc 40x for the moment.
40x uses SPRN_DEAR instead of SPRN_DAR and SPRN_ESR instead of
SPRN_DSISR. Take it into account in common macros.
40x MSR value doesn't fit on 15 bits, use LOAD_REG_IMMEDIATE() in
common macros that will be used also with 40x.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/01963af2b83037bca270d7bf1336ffcf35da8282.1615552866.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/kernel/entry_32.S')
| -rw-r--r-- | arch/powerpc/kernel/entry_32.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S index 8528b4c7f9d3..535c55f4393a 100644 --- a/arch/powerpc/kernel/entry_32.S +++ b/arch/powerpc/kernel/entry_32.S @@ -162,7 +162,7 @@ transfer_to_handler: li r12,-1 /* clear all pending debug events */ mtspr SPRN_DBSR,r12 lis r11,global_dbcr0@ha - tophys(r11,r11) + tophys_novmstack r11,r11 addi r11,r11,global_dbcr0@l #ifdef CONFIG_SMP lwz r9,TASK_CPU(r2) |