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| author |   Christophe Leroy <christophe.leroy@c-s.fr> | 2019-12-21 08:32:38 +0000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2020-01-27 22:37:24 +1100 |
| commit | cd08f109e26231b279bcc0388428afcac6408ec6 (patch) | |
| tree | 327c02894e56cd4dc7de98da709ae778338799bd /arch/powerpc/kernel/vector.S | |
| parent | powerpc/32s: Avoid crossing page boundary while changing SRR0/1. (diff) | |
| download | linux-dev-cd08f109e26231b279bcc0388428afcac6408ec6.tar.xz linux-dev-cd08f109e26231b279bcc0388428afcac6408ec6.zip | |
powerpc/32s: Enable CONFIG_VMAP_STACK
A few changes to retrieve DAR and DSISR from struct regs
instead of retrieving them directly, as they may have
changed due to a TLB miss.
Also modifies hash_page() and friends to work with virtual
data addresses instead of physical ones. Same on load_up_fpu()
and load_up_altivec().
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
[mpe: Fix tovirt_vmstack call in head_32.S to fix CHRP build]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/2e2509a242fd5f3e23df4a06530c18060c4d321e.1576916812.git.christophe.leroy@c-s.fr
Diffstat (limited to '')
| -rw-r--r-- | arch/powerpc/kernel/vector.S | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/vector.S b/arch/powerpc/kernel/vector.S index 8eb867dbad5f..25c14a0981bf 100644 --- a/arch/powerpc/kernel/vector.S +++ b/arch/powerpc/kernel/vector.S @@ -67,6 +67,9 @@ _GLOBAL(load_up_altivec) #ifdef CONFIG_PPC32 mfspr r5,SPRN_SPRG_THREAD /* current task's THREAD (phys) */ oris r9,r9,MSR_VEC@h +#ifdef CONFIG_VMAP_STACK + tovirt(r5, r5) +#endif #else ld r4,PACACURRENT(r13) addi r5,r4,THREAD /* Get THREAD */ |