diff options
Diffstat (limited to 'hw/ppc/spapr.c')
| -rw-r--r-- | hw/ppc/spapr.c | 166 |
1 files changed, 155 insertions, 11 deletions
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index cec441cbf4..caffa12763 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -26,6 +26,7 @@ */ #include "qemu/osdep.h" #include "qapi/error.h" +#include "qapi/visitor.h" #include "sysemu/sysemu.h" #include "sysemu/numa.h" #include "hw/hw.h" @@ -208,7 +209,7 @@ static int spapr_fixup_cpu_smt_dt(void *fdt, int offset, PowerPCCPU *cpu, int i, ret = 0; uint32_t servers_prop[smt_threads]; uint32_t gservers_prop[smt_threads * 2]; - int index = ppc_get_vcpu_dt_id(cpu); + int index = spapr_vcpu_id(cpu); if (cpu->compat_pvr) { ret = fdt_setprop_cell(fdt, offset, "cpu-version", cpu->compat_pvr); @@ -237,7 +238,7 @@ static int spapr_fixup_cpu_smt_dt(void *fdt, int offset, PowerPCCPU *cpu, static int spapr_fixup_cpu_numa_dt(void *fdt, int offset, PowerPCCPU *cpu) { - int index = ppc_get_vcpu_dt_id(cpu); + int index = spapr_vcpu_id(cpu); uint32_t associativity[] = {cpu_to_be32(0x5), cpu_to_be32(0x0), cpu_to_be32(0x0), @@ -341,7 +342,7 @@ static int spapr_fixup_cpu_dt(void *fdt, sPAPRMachineState *spapr) PowerPCCPU *cpu = POWERPC_CPU(cs); CPUPPCState *env = &cpu->env; DeviceClass *dc = DEVICE_GET_CLASS(cs); - int index = ppc_get_vcpu_dt_id(cpu); + int index = spapr_vcpu_id(cpu); int compat_smt = MIN(smp_threads, ppc_compat_max_threads(cpu)); if ((index % smt) != 0) { @@ -493,7 +494,7 @@ static void spapr_populate_cpu_dt(CPUState *cs, void *fdt, int offset, PowerPCCPU *cpu = POWERPC_CPU(cs); CPUPPCState *env = &cpu->env; PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs); - int index = ppc_get_vcpu_dt_id(cpu); + int index = spapr_vcpu_id(cpu); uint32_t segs[] = {cpu_to_be32(28), cpu_to_be32(40), 0xffffffff, 0xffffffff}; uint32_t tbfreq = kvm_enabled() ? kvmppc_get_tbfreq() @@ -626,7 +627,7 @@ static void spapr_populate_cpus_dt_node(void *fdt, sPAPRMachineState *spapr) */ CPU_FOREACH_REVERSE(cs) { PowerPCCPU *cpu = POWERPC_CPU(cs); - int index = ppc_get_vcpu_dt_id(cpu); + int index = spapr_vcpu_id(cpu); DeviceClass *dc = DEVICE_GET_CLASS(cs); int offset; @@ -790,6 +791,26 @@ out: return ret; } +static bool spapr_hotplugged_dev_before_cas(void) +{ + Object *drc_container, *obj; + ObjectProperty *prop; + ObjectPropertyIterator iter; + + drc_container = container_get(object_get_root(), "/dr-connector"); + object_property_iter_init(&iter, drc_container); + while ((prop = object_property_iter_next(&iter))) { + if (!strstart(prop->type, "link<", NULL)) { + continue; + } + obj = object_property_get_link(drc_container, prop->name, NULL); + if (spapr_drc_needed(obj)) { + return true; + } + } + return false; +} + int spapr_h_cas_compose_response(sPAPRMachineState *spapr, target_ulong addr, target_ulong size, sPAPROptionVector *ov5_updates) @@ -797,9 +818,13 @@ int spapr_h_cas_compose_response(sPAPRMachineState *spapr, void *fdt, *fdt_skel; sPAPRDeviceTreeUpdateHeader hdr = { .version_id = 1 }; + if (spapr_hotplugged_dev_before_cas()) { + return 1; + } + size -= sizeof(hdr); - /* Create sceleton */ + /* Create skeleton */ fdt_skel = g_malloc0(size); _FDT((fdt_create(fdt_skel, size))); _FDT((fdt_begin_node(fdt_skel, ""))); @@ -1392,6 +1417,7 @@ static void ppc_spapr_reset(void) } qemu_devices_reset(); + spapr_clear_pending_events(spapr); /* * We place the device tree and RTAS just below either the top of the RMA, @@ -2140,6 +2166,61 @@ static void spapr_init_cpus(sPAPRMachineState *spapr) g_free(type); } +static void spapr_set_vsmt_mode(sPAPRMachineState *spapr, Error **errp) +{ + Error *local_err = NULL; + bool vsmt_user = !!spapr->vsmt; + int kvm_smt = kvmppc_smt_threads(); + int ret; + + if (!kvm_enabled() && (smp_threads > 1)) { + error_setg(&local_err, "TCG cannot support more than 1 thread/core " + "on a pseries machine"); + goto out; + } + if (!is_power_of_2(smp_threads)) { + error_setg(&local_err, "Cannot support %d threads/core on a pseries " + "machine because it must be a power of 2", smp_threads); + goto out; + } + + /* Detemine the VSMT mode to use: */ + if (vsmt_user) { + if (spapr->vsmt < smp_threads) { + error_setg(&local_err, "Cannot support VSMT mode %d" + " because it must be >= threads/core (%d)", + spapr->vsmt, smp_threads); + goto out; + } + /* In this case, spapr->vsmt has been set by the command line */ + } else { + /* Choose a VSMT mode that may be higher than necessary but is + * likely to be compatible with hosts that don't have VSMT. */ + spapr->vsmt = MAX(kvm_smt, smp_threads); + } + + /* KVM: If necessary, set the SMT mode: */ + if (kvm_enabled() && (spapr->vsmt != kvm_smt)) { + ret = kvmppc_set_smt_threads(spapr->vsmt); + if (ret) { + error_setg(&local_err, + "Failed to set KVM's VSMT mode to %d (errno %d)", + spapr->vsmt, ret); + if (!vsmt_user) { + error_append_hint(&local_err, "On PPC, a VM with %d threads/" + "core on a host with %d threads/core requires " + " the use of VSMT mode %d.\n", + smp_threads, kvm_smt, spapr->vsmt); + } + kvmppc_hint_smt_possible(&local_err); + goto out; + } + } + /* else TCG: nothing to do currently */ +out: + error_propagate(errp, local_err); +} + /* pSeries LPAR / sPAPR hardware init */ static void ppc_spapr_init(MachineState *machine) { @@ -2272,6 +2353,8 @@ static void ppc_spapr_init(MachineState *machine) spapr_cpu_parse_features(spapr); + spapr_set_vsmt_mode(spapr, &error_fatal); + spapr_init_cpus(spapr); if (kvm_enabled()) { @@ -2656,6 +2739,18 @@ static void spapr_set_resize_hpt(Object *obj, const char *value, Error **errp) } } +static void spapr_get_vsmt(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + visit_type_uint32(v, name, (uint32_t *)opaque, errp); +} + +static void spapr_set_vsmt(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + visit_type_uint32(v, name, (uint32_t *)opaque, errp); +} + static void spapr_machine_initfn(Object *obj) { sPAPRMachineState *spapr = SPAPR_MACHINE(obj); @@ -2686,6 +2781,11 @@ static void spapr_machine_initfn(Object *obj) object_property_set_description(obj, "resize-hpt", "Resizing of the Hash Page Table (enabled, disabled, required)", NULL); + object_property_add(obj, "vsmt", "uint32", spapr_get_vsmt, + spapr_set_vsmt, NULL, &spapr->vsmt, &error_abort); + object_property_set_description(obj, "vsmt", + "Virtual SMT: KVM behaves as if this were" + " the host's SMT mode", &error_abort); } static void spapr_machine_finalizefn(Object *obj) @@ -3000,7 +3100,7 @@ static void *spapr_populate_hotplug_cpu_dt(CPUState *cs, int *fdt_offset, { PowerPCCPU *cpu = POWERPC_CPU(cs); DeviceClass *dc = DEVICE_GET_CLASS(cs); - int id = ppc_get_vcpu_dt_id(cpu); + int id = spapr_vcpu_id(cpu); void *fdt; int offset, fdt_size; char *nodename; @@ -3408,9 +3508,9 @@ static void spapr_ics_resend(XICSFabric *dev) ics_resend(spapr->ics); } -static ICPState *spapr_icp_get(XICSFabric *xi, int cpu_dt_id) +static ICPState *spapr_icp_get(XICSFabric *xi, int vcpu_id) { - PowerPCCPU *cpu = ppc_get_vcpu_by_dt_id(cpu_dt_id); + PowerPCCPU *cpu = spapr_find_cpu(vcpu_id); return cpu ? ICP(cpu->intc) : NULL; } @@ -3430,6 +3530,32 @@ static void spapr_pic_print_info(InterruptStatsProvider *obj, ics_pic_print_info(spapr->ics, mon); } +int spapr_vcpu_id(PowerPCCPU *cpu) +{ + CPUState *cs = CPU(cpu); + + if (kvm_enabled()) { + return kvm_arch_vcpu_id(cs); + } else { + return cs->cpu_index; + } +} + +PowerPCCPU *spapr_find_cpu(int vcpu_id) +{ + CPUState *cs; + + CPU_FOREACH(cs) { + PowerPCCPU *cpu = POWERPC_CPU(cs); + + if (spapr_vcpu_id(cpu) == vcpu_id) { + return cpu; + } + } + + return NULL; +} + static void spapr_machine_class_init(ObjectClass *oc, void *data) { MachineClass *mc = MACHINE_CLASS(oc); @@ -3538,18 +3664,36 @@ static const TypeInfo spapr_machine_info = { type_init(spapr_machine_register_##suffix) /* + * pseries-2.11 + */ +static void spapr_machine_2_11_instance_options(MachineState *machine) +{ +} + +static void spapr_machine_2_11_class_options(MachineClass *mc) +{ + /* Defaults for the latest behaviour inherited from the base class */ +} + +DEFINE_SPAPR_MACHINE(2_11, "2.11", true); + +/* * pseries-2.10 */ +#define SPAPR_COMPAT_2_10 \ + HW_COMPAT_2_10 \ + static void spapr_machine_2_10_instance_options(MachineState *machine) { } static void spapr_machine_2_10_class_options(MachineClass *mc) { - /* Defaults for the latest behaviour inherited from the base class */ + spapr_machine_2_11_class_options(mc); + SET_MACHINE_COMPAT(mc, SPAPR_COMPAT_2_10); } -DEFINE_SPAPR_MACHINE(2_10, "2.10", true); +DEFINE_SPAPR_MACHINE(2_10, "2.10", false); /* * pseries-2.9 |