diff options
Diffstat (limited to 'hw/arm/virt.c')
| -rw-r--r-- | hw/arm/virt.c | 43 |
1 files changed, 40 insertions, 3 deletions
diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 92ab0fd094..d509504631 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -151,6 +151,7 @@ static const MemMapEntry base_memmap[] = { [VIRT_PCDIMM_ACPI] = { 0x09070000, MEMORY_HOTPLUG_IO_LEN }, [VIRT_ACPI_GED] = { 0x09080000, ACPI_GED_EVT_SEL_LEN }, [VIRT_NVDIMM_ACPI] = { 0x09090000, NVDIMM_ACPI_IO_LEN}, + [VIRT_PVTIME] = { 0x090a0000, 0x00010000 }, [VIRT_MMIO] = { 0x0a000000, 0x00000200 }, /* ...repeating for a total of NUM_VIRTIO_TRANSPORTS, each of that size */ [VIRT_PLATFORM_BUS] = { 0x0c000000, 0x02000000 }, @@ -1666,15 +1667,39 @@ static void finalize_gic_version(VirtMachineState *vms) * virt_cpu_post_init() must be called after the CPUs have * been realized and the GIC has been created. */ -static void virt_cpu_post_init(VirtMachineState *vms) +static void virt_cpu_post_init(VirtMachineState *vms, int max_cpus, + MemoryRegion *sysmem) { - bool aarch64, pmu; + bool aarch64, pmu, steal_time; CPUState *cpu; aarch64 = object_property_get_bool(OBJECT(first_cpu), "aarch64", NULL); pmu = object_property_get_bool(OBJECT(first_cpu), "pmu", NULL); + steal_time = object_property_get_bool(OBJECT(first_cpu), + "kvm-steal-time", NULL); if (kvm_enabled()) { + hwaddr pvtime_reg_base = vms->memmap[VIRT_PVTIME].base; + hwaddr pvtime_reg_size = vms->memmap[VIRT_PVTIME].size; + + if (steal_time) { + MemoryRegion *pvtime = g_new(MemoryRegion, 1); + hwaddr pvtime_size = max_cpus * PVTIME_SIZE_PER_CPU; + + /* The memory region size must be a multiple of host page size. */ + pvtime_size = REAL_HOST_PAGE_ALIGN(pvtime_size); + + if (pvtime_size > pvtime_reg_size) { + error_report("pvtime requires a %ld byte memory region for " + "%d CPUs, but only %ld has been reserved", + pvtime_size, max_cpus, pvtime_reg_size); + exit(1); + } + + memory_region_init_ram(pvtime, NULL, "pvtime", pvtime_size, NULL); + memory_region_add_subregion(sysmem, pvtime_reg_base, pvtime); + } + CPU_FOREACH(cpu) { if (pmu) { assert(arm_feature(&ARM_CPU(cpu)->env, ARM_FEATURE_PMU)); @@ -1683,6 +1708,10 @@ static void virt_cpu_post_init(VirtMachineState *vms) } kvm_arm_pmu_init(cpu); } + if (steal_time) { + kvm_arm_pvtime_init(cpu, pvtime_reg_base + + cpu->cpu_index * PVTIME_SIZE_PER_CPU); + } } } else { if (aarch64 && vms->highmem) { @@ -1853,6 +1882,11 @@ static void machvirt_init(MachineState *machine) object_property_set_bool(cpuobj, "kvm-no-adjvtime", true, NULL); } + if (vmc->no_kvm_steal_time && + object_property_find(cpuobj, "kvm-steal-time")) { + object_property_set_bool(cpuobj, "kvm-steal-time", false, NULL); + } + if (vmc->no_pmu && object_property_find(cpuobj, "pmu")) { object_property_set_bool(cpuobj, "pmu", false, NULL); } @@ -1924,7 +1958,7 @@ static void machvirt_init(MachineState *machine) create_gic(vms); - virt_cpu_post_init(vms); + virt_cpu_post_init(vms, possible_cpus->len, sysmem); fdt_add_pmu_nodes(vms); @@ -2566,8 +2600,11 @@ DEFINE_VIRT_MACHINE_AS_LATEST(5, 2) static void virt_machine_5_1_options(MachineClass *mc) { + VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc)); + virt_machine_5_2_options(mc); compat_props_add(mc->compat_props, hw_compat_5_1, hw_compat_5_1_len); + vmc->no_kvm_steal_time = true; } DEFINE_VIRT_MACHINE(5, 1) |