diff options
Diffstat (limited to 'target/ppc/excp_helper.c')
| -rw-r--r-- | target/ppc/excp_helper.c | 64 |
1 files changed, 53 insertions, 11 deletions
diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c index 7499fa1..f44b9da 100644 --- a/target/ppc/excp_helper.c +++ b/target/ppc/excp_helper.c @@ -1280,6 +1280,18 @@ static void powerpc_excp_booke(PowerPCCPU *cpu, int excp) powerpc_set_excp_state(cpu, vector, new_msr); } +/* + * When running a nested HV guest under vhyp, external interrupts are + * delivered as HVIRT. + */ +static bool books_vhyp_promotes_external_to_hvirt(PowerPCCPU *cpu) +{ + if (cpu->vhyp) { + return vhyp_cpu_in_nested(cpu); + } + return false; +} + #ifdef TARGET_PPC64 /* * When running under vhyp, hcalls are always intercepted and sent to the @@ -1288,7 +1300,21 @@ static void powerpc_excp_booke(PowerPCCPU *cpu, int excp) static bool books_vhyp_handles_hcall(PowerPCCPU *cpu) { if (cpu->vhyp) { - return true; + return !vhyp_cpu_in_nested(cpu); + } + return false; +} + +/* + * When running a nested KVM HV guest under vhyp, HV exceptions are not + * delivered to the guest (because there is no concept of HV support), but + * rather they are sent tothe vhyp to exit from the L2 back to the L1 and + * return from the H_ENTER_NESTED hypercall. + */ +static bool books_vhyp_handles_hv_excp(PowerPCCPU *cpu) +{ + if (cpu->vhyp) { + return vhyp_cpu_in_nested(cpu); } return false; } @@ -1541,12 +1567,6 @@ static void powerpc_excp_books(PowerPCCPU *cpu, int excp) break; } - /* Sanity check */ - if (!(env->msr_mask & MSR_HVB) && srr0 == SPR_HSRR0) { - cpu_abort(cs, "Trying to deliver HV exception (HSRR) %d with " - "no HV support\n", excp); - } - /* * Sort out endianness of interrupt, this differs depending on the * CPU, the HV mode, etc... @@ -1565,10 +1585,26 @@ static void powerpc_excp_books(PowerPCCPU *cpu, int excp) env->spr[srr1] = msr; } - /* This can update new_msr and vector if AIL applies */ - ppc_excp_apply_ail(cpu, excp, msr, &new_msr, &vector); + if ((new_msr & MSR_HVB) && books_vhyp_handles_hv_excp(cpu)) { + PPCVirtualHypervisorClass *vhc = + PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp); + /* Deliver interrupt to L1 by returning from the H_ENTER_NESTED call */ + vhc->deliver_hv_excp(cpu, excp); - powerpc_set_excp_state(cpu, vector, new_msr); + powerpc_reset_excp_state(cpu); + + } else { + /* Sanity check */ + if (!(env->msr_mask & MSR_HVB) && srr0 == SPR_HSRR0) { + cpu_abort(cs, "Trying to deliver HV exception (HSRR) %d with " + "no HV support\n", excp); + } + + /* This can update new_msr and vector if AIL applies */ + ppc_excp_apply_ail(cpu, excp, msr, &new_msr, &vector); + + powerpc_set_excp_state(cpu, vector, new_msr); + } } #else static inline void powerpc_excp_books(PowerPCCPU *cpu, int excp) @@ -1688,7 +1724,11 @@ static void ppc_hw_interrupt(CPUPPCState *env) /* HEIC blocks delivery to the hypervisor */ if ((async_deliver && !(heic && msr_hv && !msr_pr)) || (env->has_hv_mode && msr_hv == 0 && !lpes0)) { - powerpc_excp(cpu, POWERPC_EXCP_EXTERNAL); + if (books_vhyp_promotes_external_to_hvirt(cpu)) { + powerpc_excp(cpu, POWERPC_EXCP_HVIRT); + } else { + powerpc_excp(cpu, POWERPC_EXCP_EXTERNAL); + } return; } } @@ -1798,6 +1838,8 @@ void ppc_cpu_do_fwnmi_machine_check(CPUState *cs, target_ulong vector) msr |= (1ULL << MSR_LE); } + /* Anything for nested required here? MSR[HV] bit? */ + powerpc_set_excp_state(cpu, vector, msr); } |