diff options
| -rw-r--r-- | arch/powerpc/kernel/exceptions-64s.S | 30 |
1 files changed, 20 insertions, 10 deletions
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 1e17f8d4365a..08992f8f5036 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -57,6 +57,10 @@ * 0x7000 - 0x7fff : FWNMI data area * 0x8000 - .... : Common interrupt handlers, remaining early * setup code, rest of kernel. + * + * We could reclaim 0x4000-0x42ff for real mode trampolines if the space + * is necessary. Until then it's more consistent to explicitly put VIRT_NONE + * vectors there. */ OPEN_FIXED_SECTION(real_vectors, 0x0100, 0x1900) OPEN_FIXED_SECTION(real_trampolines, 0x1900, 0x4000) @@ -88,6 +92,9 @@ USE_FIXED_SECTION(real_vectors) .globl __start_interrupts __start_interrupts: +/* No virt vectors corresponding with 0x0..0x100 */ +EXC_VIRT_NONE(0x4000, 0x4100) + EXC_REAL_BEGIN(system_reset, 0x100, 0x200) SET_SCRATCH0(r13) #ifdef CONFIG_PPC_P7_NAP @@ -907,9 +914,7 @@ TRAMP_KVM(PACA_EXGEN, 0xd00) EXC_COMMON(single_step_common, 0xd00, single_step_exception) EXC_REAL_OOL_HV(h_data_storage, 0xe00, 0xe20) -EXC_VIRT_BEGIN(unused, 0x4e00, 0x4e20) - b . /* Can't happen, see v2.07 Book III-S section 6.5 */ -EXC_VIRT_END(unused, 0x4e00, 0x4e20) +EXC_VIRT_NONE(0x4e00, 0x4e20) TRAMP_KVM_HV_SKIP(PACA_EXGEN, 0xe00) EXC_COMMON_BEGIN(h_data_storage_common) mfspr r10,SPRN_HDAR @@ -922,13 +927,10 @@ EXC_COMMON_BEGIN(h_data_storage_common) addi r3,r1,STACK_FRAME_OVERHEAD bl unknown_exception b ret_from_except -EXC_COMMON(trap_0e_common, 0xe00, unknown_exception) EXC_REAL_OOL_HV(h_instr_storage, 0xe20, 0xe40) -EXC_VIRT_BEGIN(unused, 0x4e20, 0x4e40) - b . /* Can't happen, see v2.07 Book III-S section 6.5 */ -EXC_VIRT_END(unused, 0x4e20, 0x4e40) +EXC_VIRT_NONE(0x4e20, 0x4e40) TRAMP_KVM_HV(PACA_EXGEN, 0xe20) EXC_COMMON(h_instr_storage_common, 0xe20, unknown_exception) @@ -939,11 +941,14 @@ TRAMP_KVM_HV(PACA_EXGEN, 0xe40) EXC_COMMON(emulation_assist_common, 0xe40, emulation_assist_interrupt) +/* + * hmi_exception trampoline is a special case. It jumps to hmi_exception_early + * first, and then eventaully from there to the trampoline to get into virtual + * mode. + */ __EXC_REAL_OOL_HV_DIRECT(hmi_exception, 0xe60, 0xe80, hmi_exception_early) __TRAMP_REAL_REAL_OOL_MASKABLE_HV(hmi_exception, 0xe60) -EXC_VIRT_BEGIN(unused, 0x4e60, 0x4e80) - b . /* Can't happen, see v2.07 Book III-S section 6.5 */ -EXC_VIRT_END(unused, 0x4e60, 0x4e80) +EXC_VIRT_NONE(0x4e60, 0x4e80) TRAMP_KVM_HV(PACA_EXGEN, 0xe60) TRAMP_REAL_BEGIN(hmi_exception_early) EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST_HV, 0xe60) @@ -1118,6 +1123,7 @@ TRAMP_KVM_HV_SKIP(PACA_EXGEN, 0x1200) EXC_COMMON(cbe_system_error_common, 0x1200, cbe_system_error_exception) #else /* CONFIG_CBE_RAS */ EXC_REAL_NONE(0x1200, 0x1300) +EXC_VIRT_NONE(0x5200, 0x5300) #endif @@ -1126,6 +1132,8 @@ EXC_VIRT(instruction_breakpoint, 0x5300, 0x5400, 0x1300) TRAMP_KVM_SKIP(PACA_EXGEN, 0x1300) EXC_COMMON(instruction_breakpoint_common, 0x1300, instruction_breakpoint_exception) +EXC_REAL_NONE(0x1400, 0x1500) +EXC_VIRT_NONE(0x5400, 0x5500) EXC_REAL_BEGIN(denorm_exception_hv, 0x1500, 0x1600) mtspr SPRN_SPRG_HSCRATCH0,r13 @@ -1228,6 +1236,7 @@ TRAMP_KVM_HV_SKIP(PACA_EXGEN, 0x1600) EXC_COMMON(cbe_maintenance_common, 0x1600, cbe_maintenance_exception) #else /* CONFIG_CBE_RAS */ EXC_REAL_NONE(0x1600, 0x1700) +EXC_VIRT_NONE(0x5600, 0x5700) #endif @@ -1248,6 +1257,7 @@ TRAMP_KVM_HV_SKIP(PACA_EXGEN, 0x1800) EXC_COMMON(cbe_thermal_common, 0x1800, cbe_thermal_exception) #else /* CONFIG_CBE_RAS */ EXC_REAL_NONE(0x1800, 0x1900) +EXC_VIRT_NONE(0x5800, 0x5900) #endif |