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| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2019-02-21 11:37:55 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-02-21 14:10:16 +0100 |
| commit | 93c4a162b014d238a287f8264adb25c009c79e61 (patch) | |
| tree | 22a11a62f16f26c387315108f5b6ff2892f9e14f /arch/powerpc/include/asm/reg.h | |
| parent | powerpc/6xx: Don't use SPRN_SPRG2 for storing stack pointer while in RTAS (diff) | |
| download | linux-93c4a162b014d238a287f8264adb25c009c79e61.tar.xz linux-93c4a162b014d238a287f8264adb25c009c79e61.zip | |
powerpc/6xx: Store PGDIR physical address in a SPRG
Use SPRN_SPRG2 to store the current thread PGDIR and
avoid reading thread_struct.pgdir at every TLB miss.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/reg.h')
| -rw-r--r-- | arch/powerpc/include/asm/reg.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index 371ef6e8248e..1f79e1d8fb0b 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -1167,6 +1167,7 @@ #ifdef CONFIG_PPC_BOOK3S_32 #define SPRN_SPRG_SCRATCH0 SPRN_SPRG0 #define SPRN_SPRG_SCRATCH1 SPRN_SPRG1 +#define SPRN_SPRG_PGDIR SPRN_SPRG2 #define SPRN_SPRG_603_LRU SPRN_SPRG4 #endif |