diff options
| -rw-r--r-- | arch/powerpc/include/asm/page.h | 7 | ||||
| -rw-r--r-- | arch/powerpc/kernel/exceptions-64s.S | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/head_32.S | 1 | ||||
| -rw-r--r-- | arch/powerpc/kernel/head_booke.h | 10 | ||||
| -rw-r--r-- | arch/powerpc/kernel/head_fsl_booke.S | 2 | ||||
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv_builtin.c | 1 | ||||
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv_rmhandlers.S | 15 | ||||
| -rw-r--r-- | arch/powerpc/mm/mem.c | 3 | ||||
| -rw-r--r-- | arch/powerpc/platforms/powermac/Kconfig | 1 |
9 files changed, 32 insertions, 10 deletions
diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h index dbc8c0679480..3d013e4696e9 100644 --- a/arch/powerpc/include/asm/page.h +++ b/arch/powerpc/include/asm/page.h @@ -323,6 +323,13 @@ struct vm_area_struct; #endif /* __ASSEMBLY__ */ #include <asm/slice.h> +/* + * Allow 30-bit DMA for very limited Broadcom wifi chips on many powerbooks. + */ +#ifdef CONFIG_PPC32 +#define ARCH_ZONE_DMA_BITS 30 +#else #define ARCH_ZONE_DMA_BITS 31 +#endif #endif /* _ASM_POWERPC_PAGE_H */ diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 6b86055e5251..73ba246ca11d 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -315,7 +315,7 @@ TRAMP_REAL_BEGIN(machine_check_common_early) mfspr r11,SPRN_DSISR /* Save DSISR */ std r11,_DSISR(r1) std r9,_CCR(r1) /* Save CR in stackframe */ - kuap_save_amr_and_lock r9, r10, cr1 + /* We don't touch AMR here, we never go to virtual mode */ /* Save r9 through r13 from EXMC save area to stack frame. */ EXCEPTION_PROLOG_COMMON_2(PACA_EXMC) mfmsr r11 /* get MSR value */ diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S index 755fab9641d6..c82947a3892a 100644 --- a/arch/powerpc/kernel/head_32.S +++ b/arch/powerpc/kernel/head_32.S @@ -757,6 +757,7 @@ __secondary_start: stw r0,0(r3) /* load up the MMU */ + bl load_segment_registers bl load_up_mmu /* ptr to phys current thread */ diff --git a/arch/powerpc/kernel/head_booke.h b/arch/powerpc/kernel/head_booke.h index bfeb469e8106..2ae635df9026 100644 --- a/arch/powerpc/kernel/head_booke.h +++ b/arch/powerpc/kernel/head_booke.h @@ -83,7 +83,7 @@ END_BTB_FLUSH_SECTION SAVE_4GPRS(3, r11); \ SAVE_2GPRS(7, r11) -.macro SYSCALL_ENTRY trapno intno +.macro SYSCALL_ENTRY trapno intno srr1 mfspr r10, SPRN_SPRG_THREAD #ifdef CONFIG_KVM_BOOKE_HV BEGIN_FTR_SECTION @@ -94,7 +94,7 @@ BEGIN_FTR_SECTION mfspr r11, SPRN_SRR1 mtocrf 0x80, r11 /* check MSR[GS] without clobbering reg */ bf 3, 1975f - b kvmppc_handler_BOOKE_INTERRUPT_\intno\()_SPRN_SRR1 + b kvmppc_handler_\intno\()_\srr1 1975: mr r12, r13 lwz r13, THREAD_NORMSAVE(2)(r10) @@ -145,9 +145,9 @@ ALT_FTR_SECTION_END_IFSET(CPU_FTR_EMB_HV) tophys(r11,r11) addi r11,r11,global_dbcr0@l #ifdef CONFIG_SMP - lwz r9,TASK_CPU(r2) - slwi r9,r9,3 - add r11,r11,r9 + lwz r10, TASK_CPU(r2) + slwi r10, r10, 3 + add r11, r11, r10 #endif lwz r12,0(r11) mtspr SPRN_DBCR0,r12 diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S index 6621f230cc37..2b39f42c3676 100644 --- a/arch/powerpc/kernel/head_fsl_booke.S +++ b/arch/powerpc/kernel/head_fsl_booke.S @@ -413,7 +413,7 @@ interrupt_base: /* System Call Interrupt */ START_EXCEPTION(SystemCall) - SYSCALL_ENTRY 0xc00 SYSCALL + SYSCALL_ENTRY 0xc00 BOOKE_INTERRUPT_SYSCALL SPRN_SRR1 /* Auxiliary Processor Unavailable Interrupt */ EXCEPTION(0x2900, AP_UNAVAIL, AuxillaryProcessorUnavailable, \ diff --git a/arch/powerpc/kvm/book3s_hv_builtin.c b/arch/powerpc/kvm/book3s_hv_builtin.c index 6035d24f1d1d..a46286f73eec 100644 --- a/arch/powerpc/kvm/book3s_hv_builtin.c +++ b/arch/powerpc/kvm/book3s_hv_builtin.c @@ -833,6 +833,7 @@ static void flush_guest_tlb(struct kvm *kvm) } } asm volatile("ptesync": : :"memory"); + asm volatile(PPC_INVALIDATE_ERAT : : :"memory"); } void kvmppc_check_need_tlb_flush(struct kvm *kvm, int pcpu, diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S index f9b2620fbecd..bc18366cd1ba 100644 --- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S +++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S @@ -2507,17 +2507,28 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) LOAD_REG_ADDR(r11, dawr_force_enable) lbz r11, 0(r11) cmpdi r11, 0 + bne 3f li r3, H_HARDWARE - beqlr + blr +3: /* Emulate H_SET_DABR/X on P8 for the sake of compat mode guests */ rlwimi r5, r4, 5, DAWRX_DR | DAWRX_DW rlwimi r5, r4, 2, DAWRX_WT clrrdi r4, r4, 3 std r4, VCPU_DAWR(r3) std r5, VCPU_DAWRX(r3) + /* + * If came in through the real mode hcall handler then it is necessary + * to write the registers since the return path won't. Otherwise it is + * sufficient to store then in the vcpu struct as they will be loaded + * next time the vcpu is run. + */ + mfmsr r6 + andi. r6, r6, MSR_DR /* in real mode? */ + bne 4f mtspr SPRN_DAWR, r4 mtspr SPRN_DAWRX, r5 - li r3, 0 +4: li r3, 0 blr _GLOBAL(kvmppc_h_cede) /* r3 = vcpu pointer, r11 = msr, r13 = paca */ diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index e885fe2aafcc..40bd4153ab09 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -253,7 +253,8 @@ void __init paging_init(void) (long int)((top_of_ram - total_ram) >> 20)); #ifdef CONFIG_ZONE_DMA - max_zone_pfns[ZONE_DMA] = min(max_low_pfn, 0x7fffffffUL >> PAGE_SHIFT); + max_zone_pfns[ZONE_DMA] = min(max_low_pfn, + ((1UL << ARCH_ZONE_DMA_BITS) - 1) >> PAGE_SHIFT); #endif max_zone_pfns[ZONE_NORMAL] = max_low_pfn; #ifdef CONFIG_HIGHMEM diff --git a/arch/powerpc/platforms/powermac/Kconfig b/arch/powerpc/platforms/powermac/Kconfig index f834a19ed772..c02d8c503b29 100644 --- a/arch/powerpc/platforms/powermac/Kconfig +++ b/arch/powerpc/platforms/powermac/Kconfig @@ -7,6 +7,7 @@ config PPC_PMAC select PPC_INDIRECT_PCI if PPC32 select PPC_MPC106 if PPC32 select PPC_NATIVE + select ZONE_DMA if PPC32 default y config PPC_PMAC64 |