diff options
Diffstat (limited to 'arch/ppc/kernel/entry.S')
| -rw-r--r-- | arch/ppc/kernel/entry.S | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/ppc/kernel/entry.S b/arch/ppc/kernel/entry.S index fba7ca17a67..59e77eb6333 100644 --- a/arch/ppc/kernel/entry.S +++ b/arch/ppc/kernel/entry.S @@ -244,6 +244,16 @@ syscall_exit_cont: andis. r10,r0,DBCR0_IC@h bnel- load_dbcr0 #endif +#ifdef CONFIG_44x + lis r4,icache_44x_need_flush@ha + lwz r5,icache_44x_need_flush@l(r4) + cmplwi cr0,r5,0 + bne- 2f +1: +#endif /* CONFIG_44x */ +BEGIN_FTR_SECTION + lwarx r7,0,r1 +END_FTR_SECTION_IFSET(CPU_FTR_NEED_PAIRED_STWCX) stwcx. r0,0,r1 /* to clear the reservation */ lwz r4,_LINK(r1) lwz r5,_CCR(r1) @@ -258,6 +268,12 @@ syscall_exit_cont: mtspr SPRN_SRR1,r8 SYNC RFI +#ifdef CONFIG_44x +2: li r7,0 + iccci r0,r0 + stw r7,icache_44x_need_flush@l(r4) + b 1b +#endif /* CONFIG_44x */ 66: li r3,-ENOSYS b ret_from_syscall @@ -679,6 +695,16 @@ resume_kernel: /* interrupts are hard-disabled at this point */ restore: +#ifdef CONFIG_44x + lis r4,icache_44x_need_flush@ha + lwz r5,icache_44x_need_flush@l(r4) + cmplwi cr0,r5,0 + beq+ 1f + li r6,0 + iccci r0,r0 + stw r6,icache_44x_need_flush@l(r4) +1: +#endif /* CONFIG_44x */ lwz r0,GPR0(r1) lwz r2,GPR2(r1) REST_4GPRS(3, r1) @@ -690,6 +716,9 @@ restore: mtctr r11 PPC405_ERR77(0,r1) +BEGIN_FTR_SECTION + lwarx r11,0,r1 +END_FTR_SECTION_IFSET(CPU_FTR_NEED_PAIRED_STWCX) stwcx. r0,0,r1 /* to clear the reservation */ #if !(defined(CONFIG_4xx) || defined(CONFIG_BOOKE)) |