diff options
Diffstat (limited to 'hw/ppc/spapr_hcall.c')
| -rw-r--r-- | hw/ppc/spapr_hcall.c | 45 |
1 files changed, 33 insertions, 12 deletions
diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c index 57bb411394..8d72bb7c1c 100644 --- a/hw/ppc/spapr_hcall.c +++ b/hw/ppc/spapr_hcall.c @@ -686,6 +686,37 @@ static int rehash_hpt(PowerPCCPU *cpu, return H_SUCCESS; } +static void do_push_sregs_to_kvm_pr(CPUState *cs, run_on_cpu_data data) +{ + int ret; + + cpu_synchronize_state(cs); + + ret = kvmppc_put_books_sregs(POWERPC_CPU(cs)); + if (ret < 0) { + error_report("failed to push sregs to KVM: %s", strerror(-ret)); + exit(1); + } +} + +static void push_sregs_to_kvm_pr(sPAPRMachineState *spapr) +{ + CPUState *cs; + + /* + * This is a hack for the benefit of KVM PR - it abuses the SDR1 + * slot in kvm_sregs to communicate the userspace address of the + * HPT + */ + if (!kvm_enabled() || !spapr->htab) { + return; + } + + CPU_FOREACH(cs) { + run_on_cpu(cs, do_push_sregs_to_kvm_pr, RUN_ON_CPU_NULL); + } +} + static target_ulong h_resize_hpt_commit(PowerPCCPU *cpu, sPAPRMachineState *spapr, target_ulong opcode, @@ -733,12 +764,7 @@ static target_ulong h_resize_hpt_commit(PowerPCCPU *cpu, spapr->htab = pending->hpt; spapr->htab_shift = pending->shift; - if (kvm_enabled()) { - /* For KVM PR, update the HPT pointer */ - target_ulong sdr1 = (target_ulong)(uintptr_t)spapr->htab - | (spapr->htab_shift - 18); - kvmppc_update_sdr1(sdr1); - } + push_sregs_to_kvm_pr(spapr); pending->hpt = NULL; /* so it's not free()d */ } @@ -1564,12 +1590,7 @@ static target_ulong h_client_architecture_support(PowerPCCPU *cpu, * the point this is called, nothing should have been * entered into the existing HPT */ spapr_reallocate_hpt(spapr, maxshift, &error_fatal); - if (kvm_enabled()) { - /* For KVM PR, update the HPT pointer */ - target_ulong sdr1 = (target_ulong)(uintptr_t)spapr->htab - | (spapr->htab_shift - 18); - kvmppc_update_sdr1(sdr1); - } + push_sregs_to_kvm_pr(spapr); } } |