diff options
Diffstat (limited to 'arch/powerpc/kernel/exceptions-64s.S')
| -rw-r--r-- | arch/powerpc/kernel/exceptions-64s.S | 228 |
1 files changed, 143 insertions, 85 deletions
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index a85f4874cba..41b02c792aa 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -40,7 +40,6 @@ __start_interrupts: .globl system_reset_pSeries; system_reset_pSeries: HMT_MEDIUM; - DO_KVM 0x100; SET_SCRATCH0(r13) #ifdef CONFIG_PPC_P7_NAP BEGIN_FTR_SECTION @@ -50,82 +49,73 @@ BEGIN_FTR_SECTION * state loss at this time. */ mfspr r13,SPRN_SRR1 - rlwinm r13,r13,47-31,30,31 - cmpwi cr0,r13,1 - bne 1f - b .power7_wakeup_noloss -1: cmpwi cr0,r13,2 - bne 1f - b .power7_wakeup_loss + rlwinm. r13,r13,47-31,30,31 + beq 9f + + /* waking up from powersave (nap) state */ + cmpwi cr1,r13,2 /* Total loss of HV state is fatal, we could try to use the * PIR to locate a PACA, then use an emergency stack etc... * but for now, let's just stay stuck here */ -1: cmpwi cr0,r13,3 - beq . -END_FTR_SECTION_IFSET(CPU_FTR_HVMODE_206) + bgt cr1,. + GET_PACA(r13) + +#ifdef CONFIG_KVM_BOOK3S_64_HV + lbz r0,PACAPROCSTART(r13) + cmpwi r0,0x80 + bne 1f + li r0,0 + stb r0,PACAPROCSTART(r13) + b kvm_start_guest +1: +#endif + + beq cr1,2f + b .power7_wakeup_noloss +2: b .power7_wakeup_loss +9: +END_FTR_SECTION_IFSET(CPU_FTR_HVMODE | CPU_FTR_ARCH_206) #endif /* CONFIG_PPC_P7_NAP */ - EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, system_reset_common, EXC_STD) + EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, system_reset_common, EXC_STD, + NOTEST, 0x100) . = 0x200 -_machine_check_pSeries: - HMT_MEDIUM - DO_KVM 0x200 - SET_SCRATCH0(r13) - EXCEPTION_PROLOG_PSERIES(PACA_EXMC, machine_check_common, EXC_STD) +machine_check_pSeries_1: + /* This is moved out of line as it can be patched by FW, but + * some code path might still want to branch into the original + * vector + */ + b machine_check_pSeries . = 0x300 .globl data_access_pSeries data_access_pSeries: HMT_MEDIUM - DO_KVM 0x300 SET_SCRATCH0(r13) +#ifndef CONFIG_POWER4_ONLY BEGIN_FTR_SECTION - GET_PACA(r13) - std r9,PACA_EXSLB+EX_R9(r13) - std r10,PACA_EXSLB+EX_R10(r13) - mfspr r10,SPRN_DAR - mfspr r9,SPRN_DSISR - srdi r10,r10,60 - rlwimi r10,r9,16,0x20 - mfcr r9 - cmpwi r10,0x2c - beq do_stab_bolted_pSeries - ld r10,PACA_EXSLB+EX_R10(r13) - std r11,PACA_EXGEN+EX_R11(r13) - ld r11,PACA_EXSLB+EX_R9(r13) - std r12,PACA_EXGEN+EX_R12(r13) - GET_SCRATCH0(r12) - std r10,PACA_EXGEN+EX_R10(r13) - std r11,PACA_EXGEN+EX_R9(r13) - std r12,PACA_EXGEN+EX_R13(r13) - EXCEPTION_PROLOG_PSERIES_1(data_access_common, EXC_STD) -FTR_SECTION_ELSE - EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, data_access_common, EXC_STD) -ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_SLB) + b data_access_check_stab +data_access_not_stab: +END_MMU_FTR_SECTION_IFCLR(MMU_FTR_SLB) +#endif + EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, data_access_common, EXC_STD, + KVMTEST_PR, 0x300) . = 0x380 .globl data_access_slb_pSeries data_access_slb_pSeries: HMT_MEDIUM - DO_KVM 0x380 SET_SCRATCH0(r13) - GET_PACA(r13) + EXCEPTION_PROLOG_1(PACA_EXSLB, KVMTEST_PR, 0x380) std r3,PACA_EXSLB+EX_R3(r13) mfspr r3,SPRN_DAR - std r9,PACA_EXSLB+EX_R9(r13) /* save r9 - r12 */ - mfcr r9 #ifdef __DISABLED__ /* Keep that around for when we re-implement dynamic VSIDs */ cmpdi r3,0 bge slb_miss_user_pseries #endif /* __DISABLED__ */ - std r10,PACA_EXSLB+EX_R10(r13) - std r11,PACA_EXSLB+EX_R11(r13) - std r12,PACA_EXSLB+EX_R12(r13) - GET_SCRATCH0(r10) - std r10,PACA_EXSLB+EX_R13(r13) - mfspr r12,SPRN_SRR1 /* and SRR1 */ + mfspr r12,SPRN_SRR1 #ifndef CONFIG_RELOCATABLE b .slb_miss_realmode #else @@ -147,24 +137,16 @@ data_access_slb_pSeries: .globl instruction_access_slb_pSeries instruction_access_slb_pSeries: HMT_MEDIUM - DO_KVM 0x480 SET_SCRATCH0(r13) - GET_PACA(r13) + EXCEPTION_PROLOG_1(PACA_EXSLB, KVMTEST_PR, 0x480) std r3,PACA_EXSLB+EX_R3(r13) mfspr r3,SPRN_SRR0 /* SRR0 is faulting address */ - std r9,PACA_EXSLB+EX_R9(r13) /* save r9 - r12 */ - mfcr r9 #ifdef __DISABLED__ /* Keep that around for when we re-implement dynamic VSIDs */ cmpdi r3,0 bge slb_miss_user_pseries #endif /* __DISABLED__ */ - std r10,PACA_EXSLB+EX_R10(r13) - std r11,PACA_EXSLB+EX_R11(r13) - std r12,PACA_EXSLB+EX_R12(r13) - GET_SCRATCH0(r10) - std r10,PACA_EXSLB+EX_R13(r13) - mfspr r12,SPRN_SRR1 /* and SRR1 */ + mfspr r12,SPRN_SRR1 #ifndef CONFIG_RELOCATABLE b .slb_miss_realmode #else @@ -184,26 +166,46 @@ instruction_access_slb_pSeries: hardware_interrupt_pSeries: hardware_interrupt_hv: BEGIN_FTR_SECTION - _MASKABLE_EXCEPTION_PSERIES(0x500, hardware_interrupt, EXC_STD) + _MASKABLE_EXCEPTION_PSERIES(0x502, hardware_interrupt, + EXC_HV, SOFTEN_TEST_HV) + KVM_HANDLER(PACA_EXGEN, EXC_HV, 0x502) FTR_SECTION_ELSE - _MASKABLE_EXCEPTION_PSERIES(0x502, hardware_interrupt, EXC_HV) - ALT_FTR_SECTION_END_IFCLR(CPU_FTR_HVMODE_206) + _MASKABLE_EXCEPTION_PSERIES(0x500, hardware_interrupt, + EXC_STD, SOFTEN_TEST_HV_201) + KVM_HANDLER(PACA_EXGEN, EXC_STD, 0x500) + ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE | CPU_FTR_ARCH_206) STD_EXCEPTION_PSERIES(0x600, 0x600, alignment) + KVM_HANDLER_PR(PACA_EXGEN, EXC_STD, 0x600) + STD_EXCEPTION_PSERIES(0x700, 0x700, program_check) + KVM_HANDLER_PR(PACA_EXGEN, EXC_STD, 0x700) + STD_EXCEPTION_PSERIES(0x800, 0x800, fp_unavailable) + KVM_HANDLER_PR(PACA_EXGEN, EXC_STD, 0x800) MASKABLE_EXCEPTION_PSERIES(0x900, 0x900, decrementer) - MASKABLE_EXCEPTION_HV(0x980, 0x980, decrementer) + MASKABLE_EXCEPTION_HV(0x980, 0x982, decrementer) STD_EXCEPTION_PSERIES(0xa00, 0xa00, trap_0a) + KVM_HANDLER_PR(PACA_EXGEN, EXC_STD, 0xa00) + STD_EXCEPTION_PSERIES(0xb00, 0xb00, trap_0b) + KVM_HANDLER_PR(PACA_EXGEN, EXC_STD, 0xb00) . = 0xc00 .globl system_call_pSeries system_call_pSeries: HMT_MEDIUM - DO_KVM 0xc00 +#ifdef CONFIG_KVM_BOOK3S_64_HANDLER + SET_SCRATCH0(r13) + GET_PACA(r13) + std r9,PACA_EXGEN+EX_R9(r13) + std r10,PACA_EXGEN+EX_R10(r13) + mfcr r9 + KVMTEST(0xc00) + GET_SCRATCH0(r13) +#endif BEGIN_FTR_SECTION cmpdi r0,0x1ebe beq- 1f @@ -220,6 +222,8 @@ END_FTR_SECTION_IFSET(CPU_FTR_REAL_LE) rfid b . /* prevent speculative execution */ + KVM_HANDLER(PACA_EXGEN, EXC_STD, 0xc00) + /* Fast LE/BE switch system call */ 1: mfspr r12,SPRN_SRR1 xori r12,r12,MSR_LE @@ -228,6 +232,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_REAL_LE) b . STD_EXCEPTION_PSERIES(0xd00, 0xd00, single_step) + KVM_HANDLER_PR(PACA_EXGEN, EXC_STD, 0xd00) /* At 0xe??? we have a bunch of hypervisor exceptions, we branch * out of line to handle them @@ -262,30 +267,93 @@ vsx_unavailable_pSeries_1: #ifdef CONFIG_CBE_RAS STD_EXCEPTION_HV(0x1200, 0x1202, cbe_system_error) + KVM_HANDLER_PR_SKIP(PACA_EXGEN, EXC_HV, 0x1202) #endif /* CONFIG_CBE_RAS */ + STD_EXCEPTION_PSERIES(0x1300, 0x1300, instruction_breakpoint) + KVM_HANDLER_PR_SKIP(PACA_EXGEN, EXC_STD, 0x1300) + #ifdef CONFIG_CBE_RAS STD_EXCEPTION_HV(0x1600, 0x1602, cbe_maintenance) + KVM_HANDLER_PR_SKIP(PACA_EXGEN, EXC_HV, 0x1602) #endif /* CONFIG_CBE_RAS */ + STD_EXCEPTION_PSERIES(0x1700, 0x1700, altivec_assist) + KVM_HANDLER_PR(PACA_EXGEN, EXC_STD, 0x1700) + #ifdef CONFIG_CBE_RAS STD_EXCEPTION_HV(0x1800, 0x1802, cbe_thermal) + KVM_HANDLER_PR_SKIP(PACA_EXGEN, EXC_HV, 0x1802) #endif /* CONFIG_CBE_RAS */ . = 0x3000 /*** Out of line interrupts support ***/ + /* moved from 0x200 */ +machine_check_pSeries: + .globl machine_check_fwnmi +machine_check_fwnmi: + HMT_MEDIUM + SET_SCRATCH0(r13) /* save r13 */ + EXCEPTION_PROLOG_PSERIES(PACA_EXMC, machine_check_common, + EXC_STD, KVMTEST, 0x200) + KVM_HANDLER_SKIP(PACA_EXMC, EXC_STD, 0x200) + +#ifndef CONFIG_POWER4_ONLY + /* moved from 0x300 */ +data_access_check_stab: + GET_PACA(r13) + std r9,PACA_EXSLB+EX_R9(r13) + std r10,PACA_EXSLB+EX_R10(r13) + mfspr r10,SPRN_DAR + mfspr r9,SPRN_DSISR + srdi r10,r10,60 + rlwimi r10,r9,16,0x20 +#ifdef CONFIG_KVM_BOOK3S_PR + lbz r9,HSTATE_IN_GUEST(r13) + rlwimi r10,r9,8,0x300 +#endif + mfcr r9 + cmpwi r10,0x2c + beq do_stab_bolted_pSeries + mtcrf 0x80,r9 + ld r9,PACA_EXSLB+EX_R9(r13) + ld r10,PACA_EXSLB+EX_R10(r13) + b data_access_not_stab +do_stab_bolted_pSeries: + std r11,PACA_EXSLB+EX_R11(r13) + std r12,PACA_EXSLB+EX_R12(r13) + GET_SCRATCH0(r10) + std r10,PACA_EXSLB+EX_R13(r13) + EXCEPTION_PROLOG_PSERIES_1(.do_stab_bolted, EXC_STD) +#endif /* CONFIG_POWER4_ONLY */ + + KVM_HANDLER_PR_SKIP(PACA_EXGEN, EXC_STD, 0x300) + KVM_HANDLER_PR_SKIP(PACA_EXSLB, EXC_STD, 0x380) + KVM_HANDLER_PR(PACA_EXGEN, EXC_STD, 0x400) + KVM_HANDLER_PR(PACA_EXSLB, EXC_STD, 0x480) + KVM_HANDLER_PR(PACA_EXGEN, EXC_STD, 0x900) + KVM_HANDLER(PACA_EXGEN, EXC_HV, 0x982) + + .align 7 /* moved from 0xe00 */ - STD_EXCEPTION_HV(., 0xe00, h_data_storage) - STD_EXCEPTION_HV(., 0xe20, h_instr_storage) - STD_EXCEPTION_HV(., 0xe40, emulation_assist) - STD_EXCEPTION_HV(., 0xe60, hmi_exception) /* need to flush cache ? */ + STD_EXCEPTION_HV(., 0xe02, h_data_storage) + KVM_HANDLER_SKIP(PACA_EXGEN, EXC_HV, 0xe02) + STD_EXCEPTION_HV(., 0xe22, h_instr_storage) + KVM_HANDLER(PACA_EXGEN, EXC_HV, 0xe22) + STD_EXCEPTION_HV(., 0xe42, emulation_assist) + KVM_HANDLER(PACA_EXGEN, EXC_HV, 0xe42) + STD_EXCEPTION_HV(., 0xe62, hmi_exception) /* need to flush cache ? */ + KVM_HANDLER(PACA_EXGEN, EXC_HV, 0xe62) /* moved from 0xf00 */ STD_EXCEPTION_PSERIES(., 0xf00, performance_monitor) + KVM_HANDLER_PR(PACA_EXGEN, EXC_STD, 0xf00) STD_EXCEPTION_PSERIES(., 0xf20, altivec_unavailable) + KVM_HANDLER_PR(PACA_EXGEN, EXC_STD, 0xf20) STD_EXCEPTION_PSERIES(., 0xf40, vsx_unavailable) + KVM_HANDLER_PR(PACA_EXGEN, EXC_STD, 0xf40) /* * An interrupt came in while soft-disabled; clear EE in SRR1, @@ -317,14 +385,6 @@ masked_Hinterrupt: hrfid b . - .align 7 -do_stab_bolted_pSeries: - std r11,PACA_EXSLB+EX_R11(r13) - std r12,PACA_EXSLB+EX_R12(r13) - GET_SCRATCH0(r10) - std r10,PACA_EXSLB+EX_R13(r13) - EXCEPTION_PROLOG_PSERIES_1(.do_stab_bolted, EXC_STD) - #ifdef CONFIG_PPC_PSERIES /* * Vectors for the FWNMI option. Share common code. @@ -334,14 +394,8 @@ do_stab_bolted_pSeries: system_reset_fwnmi: HMT_MEDIUM SET_SCRATCH0(r13) /* save r13 */ - EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, system_reset_common, EXC_STD) - - .globl machine_check_fwnmi - .align 7 -machine_check_fwnmi: - HMT_MEDIUM - SET_SCRATCH0(r13) /* save r13 */ - EXCEPTION_PROLOG_PSERIES(PACA_EXMC, machine_check_common, EXC_STD) + EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, system_reset_common, EXC_STD, + NOTEST, 0x100) #endif /* CONFIG_PPC_PSERIES */ @@ -376,7 +430,11 @@ slb_miss_user_pseries: /* KVM's trampoline code needs to be close to the interrupt handlers */ #ifdef CONFIG_KVM_BOOK3S_64_HANDLER +#ifdef CONFIG_KVM_BOOK3S_PR #include "../kvm/book3s_rmhandlers.S" +#else +#include "../kvm/book3s_hv_rmhandlers.S" +#endif #endif .align 7 |