diff options
| -rw-r--r-- | hw/ppc/spapr.c | 1 | ||||
| -rw-r--r-- | hw/ppc/spapr_hcall.c | 32 | ||||
| -rw-r--r-- | include/hw/ppc/spapr_cpu_core.h | 1 |
3 files changed, 34 insertions, 0 deletions
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 08cc7c2bd6..0890c2840f 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -4312,6 +4312,7 @@ static void spapr_cpu_exec_enter(PPCVirtualHypervisor *vhyp, PowerPCCPU *cpu) /* These are only called by TCG, KVM maintains dispatch state */ + spapr_cpu->prod = false; if (spapr_cpu->vpa_addr) { CPUState *cs = CPU(cpu); uint32_t dispatch; diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c index 4c5ea17250..dd584da1ce 100644 --- a/hw/ppc/spapr_hcall.c +++ b/hw/ppc/spapr_hcall.c @@ -1051,14 +1051,44 @@ static target_ulong h_cede(PowerPCCPU *cpu, SpaprMachineState *spapr, { CPUPPCState *env = &cpu->env; CPUState *cs = CPU(cpu); + SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); env->msr |= (1ULL << MSR_EE); hreg_compute_hflags(env); + + if (spapr_cpu->prod) { + spapr_cpu->prod = false; + return H_SUCCESS; + } + if (!cpu_has_work(cs)) { cs->halted = 1; cs->exception_index = EXCP_HLT; cs->exit_request = 1; } + + return H_SUCCESS; +} + +static target_ulong h_prod(PowerPCCPU *cpu, SpaprMachineState *spapr, + target_ulong opcode, target_ulong *args) +{ + target_long target = args[0]; + PowerPCCPU *tcpu; + CPUState *cs; + SpaprCpuState *spapr_cpu; + + tcpu = spapr_find_cpu(target); + cs = CPU(tcpu); + if (!cs) { + return H_PARAMETER; + } + + spapr_cpu = spapr_cpu_state(tcpu); + spapr_cpu->prod = true; + cs->halted = 0; + qemu_cpu_kick(cs); + return H_SUCCESS; } @@ -1885,6 +1915,8 @@ static void hypercall_register_types(void) /* hcall-splpar */ spapr_register_hypercall(H_REGISTER_VPA, h_register_vpa); spapr_register_hypercall(H_CEDE, h_cede); + spapr_register_hypercall(H_PROD, h_prod); + spapr_register_hypercall(H_SIGNAL_SYS_RESET, h_signal_sys_reset); /* processor register resource access h-calls */ diff --git a/include/hw/ppc/spapr_cpu_core.h b/include/hw/ppc/spapr_cpu_core.h index 35e0a7eead..1c4cc6559c 100644 --- a/include/hw/ppc/spapr_cpu_core.h +++ b/include/hw/ppc/spapr_cpu_core.h @@ -46,6 +46,7 @@ typedef struct SpaprCpuState { uint64_t vpa_addr; uint64_t slb_shadow_addr, slb_shadow_size; uint64_t dtl_addr, dtl_size; + bool prod; /* not migrated, only used to improve dispatch latencies */ struct ICPState *icp; struct XiveTCTX *tctx; } SpaprCpuState; |