diff options
| 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/kernel/fpu.S | |
| 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/kernel/fpu.S')
| -rw-r--r-- | arch/powerpc/kernel/fpu.S | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/fpu.S b/arch/powerpc/kernel/fpu.S index 3ff9a8fafa46..2c57ece6671c 100644 --- a/arch/powerpc/kernel/fpu.S +++ b/arch/powerpc/kernel/fpu.S @@ -92,9 +92,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_VSX) /* enable use of FP after return */ #ifdef CONFIG_PPC32 mfspr r5,SPRN_SPRG_THREAD /* current task's THREAD (phys) */ -#ifdef CONFIG_VMAP_STACK tovirt(r5, r5) -#endif lwz r4,THREAD_FPEXC_MODE(r5) ori r9,r9,MSR_FP /* enable FP for current */ or r9,r9,r4 |