xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

powerpc/6xx: Store PGDIR physical address in a SPRG

Browse Source 
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>
This commit is contained in:
Christophe Leroy
2019-02-21 10:37:55 +00:00
committed by Michael Ellerman
parent 0df977eafc
commit 93c4a162b0
4 changed files with 18 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
arch/powerpc/include/asm/reg.h
View File

@@ -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