diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/include/asm/exception-64s.h | 33 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/paca.h | 6 |
2 files changed, 20 insertions, 19 deletions
diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h index 4834a6d5a75c..cca12f084842 100644 --- a/arch/powerpc/include/asm/exception-64s.h +++ b/arch/powerpc/include/asm/exception-64s.h @@ -48,17 +48,18 @@ #define EX_LR 72 #define EX_CFAR 80 #define EX_PPR 88 /* SMT thread status register (priority) */ +#define EX_CTR 96 #ifdef CONFIG_RELOCATABLE #define __EXCEPTION_RELON_PROLOG_PSERIES_1(label, h) \ ld r12,PACAKBASE(r13); /* get high part of &label */ \ mfspr r11,SPRN_##h##SRR0; /* save SRR0 */ \ LOAD_HANDLER(r12,label); \ - mtlr r12; \ + mtctr r12; \ mfspr r12,SPRN_##h##SRR1; /* and SRR1 */ \ li r10,MSR_RI; \ mtmsrd r10,1; /* Set RI (EE=0) */ \ - blr; + bctr; #else /* If not relocatable, we can jump directly -- and save messing with LR */ #define __EXCEPTION_RELON_PROLOG_PSERIES_1(label, h) \ @@ -97,18 +98,18 @@ #if defined(CONFIG_RELOCATABLE) /* - * If we support interrupts with relocation on AND we're a relocatable - * kernel, we need to use LR to get to the 2nd level handler. So, save/restore - * it when required. + * If we support interrupts with relocation on AND we're a relocatable kernel, + * we need to use CTR to get to the 2nd level handler. So, save/restore it + * when required. */ -#define SAVE_LR(reg, area) mflr reg ; std reg,area+EX_LR(r13) -#define GET_LR(reg, area) ld reg,area+EX_LR(r13) -#define RESTORE_LR(reg, area) ld reg,area+EX_LR(r13) ; mtlr reg +#define SAVE_CTR(reg, area) mfctr reg ; std reg,area+EX_CTR(r13) +#define GET_CTR(reg, area) ld reg,area+EX_CTR(r13) +#define RESTORE_CTR(reg, area) ld reg,area+EX_CTR(r13) ; mtctr reg #else -/* ...else LR is unused and in register. */ -#define SAVE_LR(reg, area) -#define GET_LR(reg, area) mflr reg -#define RESTORE_LR(reg, area) +/* ...else CTR is unused and in register. */ +#define SAVE_CTR(reg, area) +#define GET_CTR(reg, area) mfctr reg +#define RESTORE_CTR(reg, area) #endif /* @@ -164,7 +165,7 @@ END_FTR_SECTION_NESTED(ftr,ftr,943) #define __EXCEPTION_PROLOG_1(area, extra, vec) \ OPT_SAVE_REG_TO_PACA(area+EX_PPR, r9, CPU_FTR_HAS_PPR); \ OPT_SAVE_REG_TO_PACA(area+EX_CFAR, r10, CPU_FTR_CFAR); \ - SAVE_LR(r10, area); \ + SAVE_CTR(r10, area); \ mfcr r9; \ extra(vec); \ std r11,area+EX_R11(r13); \ @@ -270,7 +271,7 @@ do_kvm_##n: \ sth r1,PACA_TRAP_SAVE(r13); \ std r3,area+EX_R3(r13); \ addi r3,r13,area; /* r3 -> where regs are saved*/ \ - RESTORE_LR(r1, area); \ + RESTORE_CTR(r1, area); \ b bad_stack; \ 3: std r9,_CCR(r1); /* save CR in stackframe */ \ std r11,_NIP(r1); /* save SRR0 in stackframe */ \ @@ -298,10 +299,10 @@ do_kvm_##n: \ ld r10,area+EX_CFAR(r13); \ std r10,ORIG_GPR3(r1); \ END_FTR_SECTION_NESTED(CPU_FTR_CFAR, CPU_FTR_CFAR, 66); \ - GET_LR(r9,area); /* Get LR, later save to stack */ \ + mflr r9; /* Get LR, later save to stack */ \ ld r2,PACATOC(r13); /* get kernel TOC into r2 */ \ std r9,_LINK(r1); \ - mfctr r10; /* save CTR in stackframe */ \ + GET_CTR(r10, area); \ std r10,_CTR(r1); \ lbz r10,PACASOFTIRQEN(r13); \ mfspr r11,SPRN_XER; /* save XER in stackframe */ \ diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h index 77c91e74b612..17d40a2a00c4 100644 --- a/arch/powerpc/include/asm/paca.h +++ b/arch/powerpc/include/asm/paca.h @@ -93,9 +93,9 @@ struct paca_struct { * Now, starting in cacheline 2, the exception save areas */ /* used for most interrupts/exceptions */ - u64 exgen[12] __attribute__((aligned(0x80))); - u64 exmc[12]; /* used for machine checks */ - u64 exslb[12]; /* used for SLB/segment table misses + u64 exgen[13] __attribute__((aligned(0x80))); + u64 exmc[13]; /* used for machine checks */ + u64 exslb[13]; /* used for SLB/segment table misses * on the linear mapping */ /* SLB related definitions */ u16 vmalloc_sllp; |