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powerpc/kernel: Open code SET_DEFAULT_THREAD_PPR 

This is only used in one location, open code it.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Michael Ellerman 2015-11-25 14:25:18 +11:00
parent d030a4b5eb
commit d8725ce86c
2 changed files with 7 additions and 14 deletions
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13
arch/powerpc/include/asm/ppc_asm.h
View File

@ -413,19 +413,6 @@ END_FTR_SECTION_IFCLR(CPU_FTR_601)
FTR_SECTION_ELSE_NESTED(848); \
mtocrf (FXM), RS; \
ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_NOEXECUTE, 848)
/*
* PPR restore macros used in entry_64.S
* Used for P7 or later processors
*/
#define SET_DEFAULT_THREAD_PPR(ra, rb) \
BEGIN_FTR_SECTION_NESTED(945) \
lis ra,INIT_PPR@highest; /* default ppr=3 */ \
ld rb,PACACURRENT(r13); \
sldi ra,ra,32; /* 11- 13 bits are used for ppr */ \
std ra,TASKTHREADPPR(rb); \
END_FTR_SECTION_NESTED(CPU_FTR_HAS_PPR,CPU_FTR_HAS_PPR,945)
#endif
/*

8
arch/powerpc/kernel/entry_64.S
View File

@ -316,7 +316,13 @@ syscall_exit_work:
subi r12,r12,TI_FLAGS
4: /* Anything else left to do? */
SET_DEFAULT_THREAD_PPR(r3, r10) /* Set thread.ppr = 3 */
BEGIN_FTR_SECTION
lis r3,INIT_PPR@highest /* Set thread.ppr = 3 */
ld r10,PACACURRENT(r13)
sldi r3,r3,32 /* bits 11-13 are used for ppr */
std r3,TASKTHREADPPR(r10)
END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR)
andi. r0,r9,(_TIF_SYSCALL_DOTRACE|_TIF_SINGLESTEP)
beq ret_from_except_lite