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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-03-12 13:50:22 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-03-29 04:22:05 +0200 |
| commit | 7aa8dd67f15731f659390018b5c9fd95f5975b3d (patch) | |
| tree | dae28ba3fe83b21967409a57738f19d28e7a1b1d /arch/powerpc/mm/book3s32 | |
| parent | powerpc/32: Remove ksp_limit (diff) | |
| download | linux-7aa8dd67f15731f659390018b5c9fd95f5975b3d.tar.xz linux-7aa8dd67f15731f659390018b5c9fd95f5975b3d.zip | |
powerpc/32: Always enable data translation in exception prolog
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.
That means the data translation is now re-enabled early in
exception prolog in all cases, not only when using VMAP stacks.
While we are touching EXCEPTION_PROLOG macros, remove the
unused for_rtas parameter in EXCEPTION_PROLOG_1.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/7cd6440c60a7e8f4f035b245c57720f51e225aae.1615552866.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/mm/book3s32')
| -rw-r--r-- | arch/powerpc/mm/book3s32/hash_low.S | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/arch/powerpc/mm/book3s32/hash_low.S b/arch/powerpc/mm/book3s32/hash_low.S index 0e6dc830c38b..fb4233a5bdf7 100644 --- a/arch/powerpc/mm/book3s32/hash_low.S +++ b/arch/powerpc/mm/book3s32/hash_low.S @@ -140,10 +140,6 @@ _GLOBAL(hash_page) bne- .Lretry /* retry if someone got there first */ mfsrin r3,r4 /* get segment reg for segment */ -#ifndef CONFIG_VMAP_STACK - mfctr r0 - stw r0,_CTR(r11) -#endif bl create_hpte /* add the hash table entry */ #ifdef CONFIG_SMP @@ -152,17 +148,7 @@ _GLOBAL(hash_page) li r0,0 stw r0, (mmu_hash_lock - PAGE_OFFSET)@l(r8) #endif - -#ifdef CONFIG_VMAP_STACK b fast_hash_page_return -#else - /* Return from the exception */ - lwz r5,_CTR(r11) - mtctr r5 - lwz r0,GPR0(r11) - lwz r8,GPR8(r11) - b fast_exception_return -#endif #ifdef CONFIG_SMP .Lhash_page_out: |