diff options
Diffstat (limited to 'arch/powerpc/kvm/book3s_hv_rmhandlers.S')
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv_rmhandlers.S | 138 |
1 files changed, 46 insertions, 92 deletions
diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S index 32a4b4d412b9..37f50861dd98 100644 --- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S +++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S @@ -51,6 +51,14 @@ #define STACK_SLOT_FSCR (SFS-96) /* + * Use the last LPID (all implemented LPID bits = 1) for partition switching. + * This is reserved in the LPID allocator. POWER7 only implements 0x3ff, but + * we write 0xfff into the LPID SPR anyway, which seems to work and just + * ignores the top bits. + */ +#define LPID_RSVD 0xfff + +/* * Call kvmppc_hv_entry in real mode. * Must be called with interrupts hard-disabled. * @@ -229,14 +237,14 @@ kvm_novcpu_wakeup: cmpdi r4, 0 beq kvmppc_primary_no_guest -#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING +#ifdef CONFIG_KVM_BOOK3S_HV_P8_TIMING addi r3, r4, VCPU_TB_RMENTRY bl kvmhv_start_timing #endif b kvmppc_got_guest kvm_novcpu_exit: -#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING +#ifdef CONFIG_KVM_BOOK3S_HV_P8_TIMING ld r4, HSTATE_KVM_VCPU(r13) cmpdi r4, 0 beq 13f @@ -515,7 +523,7 @@ kvmppc_hv_entry: li r6, KVM_GUEST_MODE_HOST_HV stb r6, HSTATE_IN_GUEST(r13) -#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING +#ifdef CONFIG_KVM_BOOK3S_HV_P8_TIMING /* Store initial timestamp */ cmpdi r4, 0 beq 1f @@ -778,17 +786,14 @@ END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_207S) /* Restore AMR and UAMOR, set AMOR to all 1s */ ld r5,VCPU_AMR(r4) ld r6,VCPU_UAMOR(r4) - li r7,-1 mtspr SPRN_AMR,r5 mtspr SPRN_UAMOR,r6 - mtspr SPRN_AMOR,r7 - /* Restore state of CTRL run bit; assume 1 on entry */ + /* Restore state of CTRL run bit; the host currently has it set to 1 */ lwz r5,VCPU_CTRL(r4) andi. r5,r5,1 bne 4f - mfspr r6,SPRN_CTRLF - clrrdi r6,r6,1 + li r6,0 mtspr SPRN_CTRLT,r6 4: /* Secondary threads wait for primary to have done partition switch */ @@ -817,10 +822,6 @@ END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_207S) * Set the decrementer to the guest decrementer. */ ld r8,VCPU_DEC_EXPIRES(r4) - /* r8 is a host timebase value here, convert to guest TB */ - ld r5,HSTATE_KVM_VCORE(r13) - ld r6,VCORE_TB_OFFSET_APPL(r5) - add r8,r8,r6 mftb r7 subf r3,r7,r8 mtspr SPRN_DEC,r3 @@ -893,7 +894,7 @@ fast_guest_return: li r9, KVM_GUEST_MODE_GUEST_HV stb r9, HSTATE_IN_GUEST(r13) -#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING +#ifdef CONFIG_KVM_BOOK3S_HV_P8_TIMING /* Accumulate timing */ addi r3, r4, VCPU_TB_GUEST bl kvmhv_accumulate_time @@ -944,7 +945,7 @@ secondary_too_late: cmpdi r4, 0 beq 11f stw r12, VCPU_TRAP(r4) -#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING +#ifdef CONFIG_KVM_BOOK3S_HV_P8_TIMING addi r3, r4, VCPU_TB_RMEXIT bl kvmhv_accumulate_time #endif @@ -958,7 +959,7 @@ hdec_soon: li r12, BOOK3S_INTERRUPT_HV_DECREMENTER 12: stw r12, VCPU_TRAP(r4) mr r9, r4 -#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING +#ifdef CONFIG_KVM_BOOK3S_HV_P8_TIMING addi r3, r4, VCPU_TB_RMEXIT bl kvmhv_accumulate_time #endif @@ -1023,7 +1024,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR) /* Restore R1/R2 so we can handle faults */ ld r1, HSTATE_HOST_R1(r13) - ld r2, PACATOC(r13) + LOAD_PACA_TOC() mfspr r10, SPRN_SRR0 mfspr r11, SPRN_SRR1 @@ -1055,7 +1056,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR) li r0, MSR_RI mtmsrd r0, 1 -#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING +#ifdef CONFIG_KVM_BOOK3S_HV_P8_TIMING addi r3, r9, VCPU_TB_RMINTR mr r4, r9 bl kvmhv_accumulate_time @@ -1134,7 +1135,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR) guest_exit_cont: /* r9 = vcpu, r12 = trap, r13 = paca */ -#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING +#ifdef CONFIG_KVM_BOOK3S_HV_P8_TIMING addi r3, r9, VCPU_TB_RMEXIT mr r4, r9 bl kvmhv_accumulate_time @@ -1195,9 +1196,6 @@ guest_bypass: mftb r6 extsw r5,r5 16: add r5,r5,r6 - /* r5 is a guest timebase value here, convert to host TB */ - ld r4,VCORE_TB_OFFSET_APPL(r3) - subf r5,r4,r5 std r5,VCPU_DEC_EXPIRES(r9) /* Increment exit count, poke other threads to exit */ @@ -1211,12 +1209,12 @@ guest_bypass: stw r0, VCPU_CPU(r9) stw r0, VCPU_THREAD_CPU(r9) - /* Save guest CTRL register, set runlatch to 1 */ + /* Save guest CTRL register, set runlatch to 1 if it was clear */ mfspr r6,SPRN_CTRLF stw r6,VCPU_CTRL(r9) andi. r0,r6,1 bne 4f - ori r6,r6,1 + li r6,1 mtspr SPRN_CTRLT,r6 4: /* @@ -1497,7 +1495,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) mtspr SPRN_LPCR,r8 isync -#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING +#ifdef CONFIG_KVM_BOOK3S_HV_P8_TIMING /* Finish timing, if we have a vcpu */ ld r4, HSTATE_KVM_VCPU(r13) cmpdi r4, 0 @@ -1794,13 +1792,8 @@ hcall_real_table: .long DOTSYM(kvmppc_h_clear_mod) - hcall_real_table .long DOTSYM(kvmppc_h_clear_ref) - hcall_real_table .long DOTSYM(kvmppc_h_protect) - hcall_real_table -#ifdef CONFIG_SPAPR_TCE_IOMMU - .long DOTSYM(kvmppc_h_get_tce) - hcall_real_table - .long DOTSYM(kvmppc_rm_h_put_tce) - hcall_real_table -#else .long 0 /* 0x1c */ .long 0 /* 0x20 */ -#endif .long 0 /* 0x24 - H_SET_SPRG0 */ .long DOTSYM(kvmppc_h_set_dabr) - hcall_real_table .long DOTSYM(kvmppc_rm_h_page_init) - hcall_real_table @@ -1818,11 +1811,11 @@ hcall_real_table: .long 0 /* 0x5c */ .long 0 /* 0x60 */ #ifdef CONFIG_KVM_XICS - .long DOTSYM(kvmppc_rm_h_eoi) - hcall_real_table - .long DOTSYM(kvmppc_rm_h_cppr) - hcall_real_table - .long DOTSYM(kvmppc_rm_h_ipi) - hcall_real_table - .long DOTSYM(kvmppc_rm_h_ipoll) - hcall_real_table - .long DOTSYM(kvmppc_rm_h_xirr) - hcall_real_table + .long DOTSYM(xics_rm_h_eoi) - hcall_real_table + .long DOTSYM(xics_rm_h_cppr) - hcall_real_table + .long DOTSYM(xics_rm_h_ipi) - hcall_real_table + .long 0 /* 0x70 - H_IPOLL */ + .long DOTSYM(xics_rm_h_xirr) - hcall_real_table #else .long 0 /* 0x64 - H_EOI */ .long 0 /* 0x68 - H_CPPR */ @@ -1878,13 +1871,8 @@ hcall_real_table: .long 0 /* 0x12c */ .long 0 /* 0x130 */ .long DOTSYM(kvmppc_h_set_xdabr) - hcall_real_table -#ifdef CONFIG_SPAPR_TCE_IOMMU - .long DOTSYM(kvmppc_rm_h_stuff_tce) - hcall_real_table - .long DOTSYM(kvmppc_rm_h_put_tce_indirect) - hcall_real_table -#else .long 0 /* 0x138 */ .long 0 /* 0x13c */ -#endif .long 0 /* 0x140 */ .long 0 /* 0x144 */ .long 0 /* 0x148 */ @@ -1997,7 +1985,7 @@ hcall_real_table: .long 0 /* 0x2f4 */ .long 0 /* 0x2f8 */ #ifdef CONFIG_KVM_XICS - .long DOTSYM(kvmppc_rm_h_xirr_x) - hcall_real_table + .long DOTSYM(xics_rm_h_xirr_x) - hcall_real_table #else .long 0 /* 0x2fc - H_XIRR_X*/ #endif @@ -2163,12 +2151,9 @@ END_FTR_SECTION_IFCLR(CPU_FTR_TM) /* save expiry time of guest decrementer */ add r3, r3, r5 ld r4, HSTATE_KVM_VCPU(r13) - ld r5, HSTATE_KVM_VCORE(r13) - ld r6, VCORE_TB_OFFSET_APPL(r5) - subf r3, r6, r3 /* convert to host TB value */ std r3, VCPU_DEC_EXPIRES(r4) -#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING +#ifdef CONFIG_KVM_BOOK3S_HV_P8_TIMING ld r4, HSTATE_KVM_VCPU(r13) addi r3, r4, VCPU_TB_CEDE bl kvmhv_accumulate_time @@ -2186,8 +2171,7 @@ END_FTR_SECTION_IFCLR(CPU_FTR_TM) * Also clear the runlatch bit before napping. */ kvm_do_nap: - mfspr r0, SPRN_CTRLF - clrrdi r0, r0, 1 + li r0,0 mtspr SPRN_CTRLT, r0 li r0,1 @@ -2206,8 +2190,7 @@ kvm_nap_sequence: /* desired LPCR value in r5 */ bl isa206_idle_insn_mayloss - mfspr r0, SPRN_CTRLF - ori r0, r0, 1 + li r0,1 mtspr SPRN_CTRLT, r0 mtspr SPRN_SRR1, r3 @@ -2238,7 +2221,7 @@ kvm_end_cede: /* get vcpu pointer */ ld r4, HSTATE_KVM_VCPU(r13) -#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING +#ifdef CONFIG_KVM_BOOK3S_HV_P8_TIMING addi r3, r4, VCPU_TB_RMINTR bl kvmhv_accumulate_time #endif @@ -2264,9 +2247,6 @@ END_FTR_SECTION_IFCLR(CPU_FTR_TM) /* Restore guest decrementer */ ld r3, VCPU_DEC_EXPIRES(r4) - ld r5, HSTATE_KVM_VCORE(r13) - ld r6, VCORE_TB_OFFSET_APPL(r5) - add r3, r3, r6 /* convert host TB to guest TB value */ mftb r7 subf r3, r7, r3 mtspr SPRN_DEC, r3 @@ -2711,8 +2691,7 @@ kvmppc_bad_host_intr: std r0, GPR0(r1) std r9, GPR1(r1) std r2, GPR2(r1) - SAVE_4GPRS(3, r1) - SAVE_2GPRS(7, r1) + SAVE_GPRS(3, 8, r1) srdi r0, r12, 32 clrldi r12, r12, 32 std r0, _CCR(r1) @@ -2735,7 +2714,7 @@ kvmppc_bad_host_intr: ld r9, HSTATE_SCRATCH2(r13) ld r12, HSTATE_SCRATCH0(r13) GET_SCRATCH0(r0) - SAVE_4GPRS(9, r1) + SAVE_GPRS(9, 12, r1) std r0, GPR13(r1) SAVE_NVGPRS(r1) ld r5, HSTATE_CFAR(r13) @@ -2748,8 +2727,8 @@ kvmppc_bad_host_intr: std r4, _CTR(r1) std r5, _XER(r1) std r6, SOFTE(r1) - ld r2, PACATOC(r13) - LOAD_REG_IMMEDIATE(3, 0x7265677368657265) + LOAD_PACA_TOC() + LOAD_REG_IMMEDIATE(3, STACK_FRAME_REGS_MARKER) std r3, STACK_FRAME_OVERHEAD-16(r1) /* @@ -2778,10 +2757,11 @@ kvmppc_msr_interrupt: blr /* + * void kvmhv_load_guest_pmu(struct kvm_vcpu *vcpu) + * * Load up guest PMU state. R3 points to the vcpu struct. */ -_GLOBAL(kvmhv_load_guest_pmu) -EXPORT_SYMBOL_GPL(kvmhv_load_guest_pmu) +kvmhv_load_guest_pmu: mr r4, r3 mflr r0 li r3, 1 @@ -2816,26 +2796,16 @@ END_FTR_SECTION_IFSET(CPU_FTR_PMAO_BUG) mtspr SPRN_SIAR, r7 mtspr SPRN_SDAR, r8 BEGIN_FTR_SECTION - ld r5, VCPU_MMCR + 24(r4) - ld r6, VCPU_SIER + 8(r4) - ld r7, VCPU_SIER + 16(r4) - mtspr SPRN_MMCR3, r5 - mtspr SPRN_SIER2, r6 - mtspr SPRN_SIER3, r7 -END_FTR_SECTION_IFSET(CPU_FTR_ARCH_31) -BEGIN_FTR_SECTION ld r5, VCPU_MMCR + 16(r4) ld r6, VCPU_SIER(r4) mtspr SPRN_MMCR2, r5 mtspr SPRN_SIER, r6 -BEGIN_FTR_SECTION_NESTED(96) lwz r7, VCPU_PMC + 24(r4) lwz r8, VCPU_PMC + 28(r4) ld r9, VCPU_MMCRS(r4) mtspr SPRN_SPMC1, r7 mtspr SPRN_SPMC2, r8 mtspr SPRN_MMCRS, r9 -END_FTR_SECTION_NESTED(CPU_FTR_ARCH_300, 0, 96) END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) mtspr SPRN_MMCR0, r3 isync @@ -2843,10 +2813,11 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) blr /* + * void kvmhv_load_host_pmu(void) + * * Reload host PMU state saved in the PACA by kvmhv_save_host_pmu. */ -_GLOBAL(kvmhv_load_host_pmu) -EXPORT_SYMBOL_GPL(kvmhv_load_host_pmu) +kvmhv_load_host_pmu: mflr r0 lbz r4, PACA_PMCINUSE(r13) /* is the host using the PMU? */ cmpwi r4, 0 @@ -2884,25 +2855,18 @@ BEGIN_FTR_SECTION mtspr SPRN_MMCR2, r8 mtspr SPRN_SIER, r9 END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) -BEGIN_FTR_SECTION - ld r5, HSTATE_MMCR3(r13) - ld r6, HSTATE_SIER2(r13) - ld r7, HSTATE_SIER3(r13) - mtspr SPRN_MMCR3, r5 - mtspr SPRN_SIER2, r6 - mtspr SPRN_SIER3, r7 -END_FTR_SECTION_IFSET(CPU_FTR_ARCH_31) mtspr SPRN_MMCR0, r3 isync mtlr r0 23: blr /* + * void kvmhv_save_guest_pmu(struct kvm_vcpu *vcpu, bool pmu_in_use) + * * Save guest PMU state into the vcpu struct. * r3 = vcpu, r4 = full save flag (PMU in use flag set in VPA) */ -_GLOBAL(kvmhv_save_guest_pmu) -EXPORT_SYMBOL_GPL(kvmhv_save_guest_pmu) +kvmhv_save_guest_pmu: mr r9, r3 mr r8, r4 BEGIN_FTR_SECTION @@ -2951,14 +2915,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) BEGIN_FTR_SECTION std r10, VCPU_MMCR + 16(r9) END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) -BEGIN_FTR_SECTION - mfspr r5, SPRN_MMCR3 - mfspr r6, SPRN_SIER2 - mfspr r7, SPRN_SIER3 - std r5, VCPU_MMCR + 24(r9) - std r6, VCPU_SIER + 8(r9) - std r7, VCPU_SIER + 16(r9) -END_FTR_SECTION_IFSET(CPU_FTR_ARCH_31) std r7, VCPU_SIAR(r9) std r8, VCPU_SDAR(r9) mfspr r3, SPRN_PMC1 @@ -2976,7 +2932,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_31) BEGIN_FTR_SECTION mfspr r5, SPRN_SIER std r5, VCPU_SIER(r9) -BEGIN_FTR_SECTION_NESTED(96) mfspr r6, SPRN_SPMC1 mfspr r7, SPRN_SPMC2 mfspr r8, SPRN_MMCRS @@ -2985,7 +2940,6 @@ BEGIN_FTR_SECTION_NESTED(96) std r8, VCPU_MMCRS(r9) lis r4, 0x8000 mtspr SPRN_MMCRS, r4 -END_FTR_SECTION_NESTED(CPU_FTR_ARCH_300, 0, 96) END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) 22: blr @@ -3007,7 +2961,7 @@ kvmppc_fix_pmao: isync blr -#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING +#ifdef CONFIG_KVM_BOOK3S_HV_P8_TIMING /* * Start timing an activity * r3 = pointer to time accumulation struct, r4 = vcpu |