diff options
| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-02-08 15:10:21 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-02-11 23:35:08 +1100 |
| commit | eca2411040c1ee15b8882c6427fb4eb5a48ada69 (patch) | |
| tree | 69357cc60608734140fece2decb1bf444990c70b /arch/powerpc/kernel/head_booke.h | |
| parent | 57fdfbce89137ae85cd5cef48be168040a47dd13 (diff) | |
powerpc/32: Always enable data translation on syscall entry
If the code can use a stack in vm area, it can also use a
stack in linear space.
Simplify code by removing old non VMAP stack code on PPC32 in syscall.
That means the data translation is now re-enabled early in
syscall entry in all cases, not only when using VMAP stacks.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/412c6c1786922d991bbb89c2ad2e82cffe8ab112.1612796617.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/kernel/head_booke.h')
| -rw-r--r-- | arch/powerpc/kernel/head_booke.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/head_booke.h b/arch/powerpc/kernel/head_booke.h index bf33af714d11..706cd9368992 100644 --- a/arch/powerpc/kernel/head_booke.h +++ b/arch/powerpc/kernel/head_booke.h @@ -144,7 +144,6 @@ ALT_FTR_SECTION_END_IFSET(CPU_FTR_EMB_HV) li r12,-1 /* clear all pending debug events */ mtspr SPRN_DBSR,r12 lis r11,global_dbcr0@ha - tophys(r11,r11) addi r11,r11,global_dbcr0@l #ifdef CONFIG_SMP lwz r10, TASK_CPU(r2) @@ -158,7 +157,6 @@ ALT_FTR_SECTION_END_IFSET(CPU_FTR_EMB_HV) stw r12,4(r11) 3: - tovirt(r2, r2) /* set r2 to current */ lis r11, transfer_to_syscall@h ori r11, r11, transfer_to_syscall@l #ifdef CONFIG_TRACE_IRQFLAGS |