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Re: [Qemu-devel] [PATCH v3 04/10] hw/ppc: Replace global smp variables w
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From: |
Eduardo Habkost |
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Subject: |
Re: [Qemu-devel] [PATCH v3 04/10] hw/ppc: Replace global smp variables with machine smp properties |
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Date: |
Wed, 5 Jun 2019 23:54:56 -0300 |
On Wed, Jun 05, 2019 at 11:52:41PM -0300, Eduardo Habkost wrote:
> On Sun, May 19, 2019 at 04:54:22AM +0800, Like Xu wrote:
> > The global smp variables in ppc are replaced with smp machine properties.
> >
> > A local variable of the same name would be introduced in the declaration
> > phase if it's used widely in the context OR replace it on the spot if it's
> > only used once. No semantic changes.
> >
> > Signed-off-by: Like Xu <address@hidden>
>
> Any objections from the ppc maintainers to queueing this through
> the Machine Core tree?
Oops, CCing the ppc maintainers.
>
> > ---
> > hw/ppc/e500.c | 3 +++
> > hw/ppc/mac_newworld.c | 3 ++-
> > hw/ppc/mac_oldworld.c | 3 ++-
> > hw/ppc/pnv.c | 6 ++++--
> > hw/ppc/prep.c | 4 ++--
> > hw/ppc/spapr.c | 34 ++++++++++++++++++++++++++--------
> > hw/ppc/spapr_rtas.c | 4 +++-
> > 7 files changed, 42 insertions(+), 15 deletions(-)
> >
> > diff --git a/hw/ppc/e500.c b/hw/ppc/e500.c
> > index beb2efd694..5e42e5a059 100644
> > --- a/hw/ppc/e500.c
> > +++ b/hw/ppc/e500.c
> > @@ -307,6 +307,7 @@ static int ppce500_load_device_tree(PPCE500MachineState
> > *pms,
> > bool dry_run)
> > {
> > MachineState *machine = MACHINE(pms);
> > + unsigned int smp_cpus = machine->smp.cpus;
> > const PPCE500MachineClass *pmc = PPCE500_MACHINE_GET_CLASS(pms);
> > CPUPPCState *env = first_cpu->env_ptr;
> > int ret = -1;
> > @@ -734,6 +735,7 @@ static DeviceState
> > *ppce500_init_mpic_qemu(PPCE500MachineState *pms,
> > SysBusDevice *s;
> > int i, j, k;
> > MachineState *machine = MACHINE(pms);
> > + unsigned int smp_cpus = machine->smp.cpus;
> > const PPCE500MachineClass *pmc = PPCE500_MACHINE_GET_CLASS(pms);
> >
> > dev = qdev_create(NULL, TYPE_OPENPIC);
> > @@ -846,6 +848,7 @@ void ppce500_init(MachineState *machine)
> > struct boot_info *boot_info;
> > int dt_size;
> > int i;
> > + unsigned int smp_cpus = machine->smp.cpus;
> > /* irq num for pin INTA, INTB, INTC and INTD is 1, 2, 3 and
> > * 4 respectively */
> > unsigned int pci_irq_nrs[PCI_NUM_PINS] = {1, 2, 3, 4};
> > diff --git a/hw/ppc/mac_newworld.c b/hw/ppc/mac_newworld.c
> > index 02d8559621..257b26ee24 100644
> > --- a/hw/ppc/mac_newworld.c
> > +++ b/hw/ppc/mac_newworld.c
> > @@ -135,6 +135,7 @@ static void ppc_core99_init(MachineState *machine)
> > DeviceState *dev, *pic_dev;
> > hwaddr nvram_addr = 0xFFF04000;
> > uint64_t tbfreq;
> > + unsigned int smp_cpus = machine->smp.cpus;
> >
> > linux_boot = (kernel_filename != NULL);
> >
> > @@ -464,7 +465,7 @@ static void ppc_core99_init(MachineState *machine)
> > sysbus_mmio_map(s, 1, CFG_ADDR + 2);
> >
> > fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, (uint16_t)smp_cpus);
> > - fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS, (uint16_t)max_cpus);
> > + fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS,
> > (uint16_t)machine->smp.max_cpus);
> > fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
> > fw_cfg_add_i16(fw_cfg, FW_CFG_MACHINE_ID, machine_arch);
> > fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, kernel_base);
> > diff --git a/hw/ppc/mac_oldworld.c b/hw/ppc/mac_oldworld.c
> > index 460cbc7923..1968f05a6c 100644
> > --- a/hw/ppc/mac_oldworld.c
> > +++ b/hw/ppc/mac_oldworld.c
> > @@ -99,6 +99,7 @@ static void ppc_heathrow_init(MachineState *machine)
> > DeviceState *dev, *pic_dev;
> > BusState *adb_bus;
> > int bios_size;
> > + unsigned int smp_cpus = machine->smp.cpus;
> > uint16_t ppc_boot_device;
> > DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
> > void *fw_cfg;
> > @@ -322,7 +323,7 @@ static void ppc_heathrow_init(MachineState *machine)
> > sysbus_mmio_map(s, 1, CFG_ADDR + 2);
> >
> > fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, (uint16_t)smp_cpus);
> > - fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS, (uint16_t)max_cpus);
> > + fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS,
> > (uint16_t)machine->smp.max_cpus);
> > fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
> > fw_cfg_add_i16(fw_cfg, FW_CFG_MACHINE_ID, ARCH_HEATHROW);
> > fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, kernel_base);
> > diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
> > index 1e8c505936..3bb15338de 100644
> > --- a/hw/ppc/pnv.c
> > +++ b/hw/ppc/pnv.c
> > @@ -678,7 +678,8 @@ static void pnv_init(MachineState *machine)
> > object_property_add_child(OBJECT(pnv), chip_name, chip,
> > &error_fatal);
> > object_property_set_int(chip, PNV_CHIP_HWID(i), "chip-id",
> > &error_fatal);
> > - object_property_set_int(chip, smp_cores, "nr-cores", &error_fatal);
> > + object_property_set_int(chip, machine->smp.cores,
> > + "nr-cores", &error_fatal);
> > object_property_set_bool(chip, true, "realized", &error_fatal);
> > }
> > g_free(chip_typename);
> > @@ -1134,6 +1135,7 @@ static void pnv_chip_instance_init(Object *obj)
> >
> > static void pnv_chip_core_realize(PnvChip *chip, Error **errp)
> > {
> > + MachineState *ms = MACHINE(qdev_get_machine());
> > Error *error = NULL;
> > PnvChipClass *pcc = PNV_CHIP_GET_CLASS(chip);
> > const char *typename = pnv_chip_core_typename(chip);
> > @@ -1168,7 +1170,7 @@ static void pnv_chip_core_realize(PnvChip *chip,
> > Error **errp)
> > snprintf(core_name, sizeof(core_name), "core[%d]", core_hwid);
> > object_property_add_child(OBJECT(chip), core_name,
> > OBJECT(pnv_core),
> > &error_fatal);
> > - object_property_set_int(OBJECT(pnv_core), smp_threads,
> > "nr-threads",
> > + object_property_set_int(OBJECT(pnv_core), ms->smp.threads,
> > "nr-threads",
> > &error_fatal);
> > object_property_set_int(OBJECT(pnv_core), core_hwid,
> > CPU_CORE_PROP_CORE_ID, &error_fatal);
> > diff --git a/hw/ppc/prep.c b/hw/ppc/prep.c
> > index b7f459d475..968fd3ade2 100644
> > --- a/hw/ppc/prep.c
> > +++ b/hw/ppc/prep.c
> > @@ -428,7 +428,7 @@ static void ppc_prep_init(MachineState *machine)
> > linux_boot = (kernel_filename != NULL);
> >
> > /* init CPUs */
> > - for (i = 0; i < smp_cpus; i++) {
> > + for (i = 0; i < machine->smp.cpus; i++) {
> > cpu = POWERPC_CPU(cpu_create(machine->cpu_type));
> > env = &cpu->env;
> >
> > @@ -765,7 +765,7 @@ static void ibm_40p_init(MachineState *machine)
> > boot_device = machine->boot_order[0];
> > }
> >
> > - fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS, (uint16_t)max_cpus);
> > + fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS,
> > (uint16_t)machine->smp.max_cpus);
> > fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)machine->ram_size);
> > fw_cfg_add_i16(fw_cfg, FW_CFG_MACHINE_ID, ARCH_PREP);
> >
> > diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
> > index 7fb34decb9..25da337f84 100644
> > --- a/hw/ppc/spapr.c
> > +++ b/hw/ppc/spapr.c
> > @@ -105,6 +105,9 @@
> > */
> > static int spapr_vcpu_id(SpaprMachineState *spapr, int cpu_index)
> > {
> > + MachineState *ms = MACHINE(spapr);
> > + unsigned int smp_threads = ms->smp.threads;
> > +
> > assert(spapr->vsmt);
> > return
> > (cpu_index / smp_threads) * spapr->vsmt + cpu_index % smp_threads;
> > @@ -152,8 +155,10 @@ static void pre_2_10_vmstate_unregister_dummy_icp(int
> > i)
> >
> > int spapr_max_server_number(SpaprMachineState *spapr)
> > {
> > + MachineState *ms = MACHINE(spapr);
> > +
> > assert(spapr->vsmt);
> > - return DIV_ROUND_UP(max_cpus * spapr->vsmt, smp_threads);
> > + return DIV_ROUND_UP(ms->smp.max_cpus * spapr->vsmt, ms->smp.threads);
> > }
> >
> > static int spapr_fixup_cpu_smt_dt(void *fdt, int offset, PowerPCCPU *cpu,
> > @@ -286,6 +291,7 @@ static void
> > spapr_populate_pa_features(SpaprMachineState *spapr,
> >
> > static int spapr_fixup_cpu_dt(void *fdt, SpaprMachineState *spapr)
> > {
> > + MachineState *ms = MACHINE(spapr);
> > int ret = 0, offset, cpus_offset;
> > CPUState *cs;
> > char cpu_model[32];
> > @@ -295,7 +301,7 @@ static int spapr_fixup_cpu_dt(void *fdt,
> > SpaprMachineState *spapr)
> > PowerPCCPU *cpu = POWERPC_CPU(cs);
> > DeviceClass *dc = DEVICE_GET_CLASS(cs);
> > int index = spapr_get_vcpu_id(cpu);
> > - int compat_smt = MIN(smp_threads, ppc_compat_max_vthreads(cpu));
> > + int compat_smt = MIN(ms->smp.threads,
> > ppc_compat_max_vthreads(cpu));
> >
> > if (!spapr_is_thread0_in_vcore(spapr, cpu)) {
> > continue;
> > @@ -441,6 +447,7 @@ static int spapr_populate_memory(SpaprMachineState
> > *spapr, void *fdt)
> > static void spapr_populate_cpu_dt(CPUState *cs, void *fdt, int offset,
> > SpaprMachineState *spapr)
> > {
> > + MachineState *ms = MACHINE(spapr);
> > PowerPCCPU *cpu = POWERPC_CPU(cs);
> > CPUPPCState *env = &cpu->env;
> > PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs);
> > @@ -452,7 +459,8 @@ static void spapr_populate_cpu_dt(CPUState *cs, void
> > *fdt, int offset,
> > uint32_t cpufreq = kvm_enabled() ? kvmppc_get_clockfreq() : 1000000000;
> > uint32_t page_sizes_prop[64];
> > size_t page_sizes_prop_size;
> > - uint32_t vcpus_per_socket = smp_threads * smp_cores;
> > + unsigned int smp_threads = ms->smp.threads;
> > + uint32_t vcpus_per_socket = smp_threads * ms->smp.cores;
> > uint32_t pft_size_prop[] = {0, cpu_to_be32(spapr->htab_shift)};
> > int compat_smt = MIN(smp_threads, ppc_compat_max_vthreads(cpu));
> > SpaprDrc *drc;
> > @@ -1022,6 +1030,7 @@ int spapr_h_cas_compose_response(SpaprMachineState
> > *spapr,
> >
> > static void spapr_dt_rtas(SpaprMachineState *spapr, void *fdt)
> > {
> > + MachineState *ms = MACHINE(spapr);
> > int rtas;
> > GString *hypertas = g_string_sized_new(256);
> > GString *qemu_hypertas = g_string_sized_new(256);
> > @@ -1032,7 +1041,7 @@ static void spapr_dt_rtas(SpaprMachineState *spapr,
> > void *fdt)
> > cpu_to_be32(max_device_addr >> 32),
> > cpu_to_be32(max_device_addr & 0xffffffff),
> > 0, cpu_to_be32(SPAPR_MEMORY_BLOCK_SIZE),
> > - cpu_to_be32(max_cpus / smp_threads),
> > + cpu_to_be32(ms->smp.max_cpus / ms->smp.threads),
> > };
> > uint32_t maxdomain = cpu_to_be32(spapr->gpu_numa_id > 1 ? 1 : 0);
> > uint32_t maxdomains[] = {
> > @@ -2540,7 +2549,7 @@ static void spapr_validate_node_memory(MachineState
> > *machine, Error **errp)
> > /* find cpu slot in machine->possible_cpus by core_id */
> > static CPUArchId *spapr_find_cpu_slot(MachineState *ms, uint32_t id, int
> > *idx)
> > {
> > - int index = id / smp_threads;
> > + int index = id / ms->smp.threads;
> >
> > if (index >= ms->possible_cpus->len) {
> > return NULL;
> > @@ -2553,10 +2562,12 @@ static CPUArchId *spapr_find_cpu_slot(MachineState
> > *ms, uint32_t id, int *idx)
> >
> > static void spapr_set_vsmt_mode(SpaprMachineState *spapr, Error **errp)
> > {
> > + MachineState *ms = MACHINE(spapr);
> > Error *local_err = NULL;
> > bool vsmt_user = !!spapr->vsmt;
> > int kvm_smt = kvmppc_smt_threads();
> > int ret;
> > + unsigned int smp_threads = ms->smp.threads;
> >
> > if (!kvm_enabled() && (smp_threads > 1)) {
> > error_setg(&local_err, "TCG cannot support more than 1 thread/core
> > "
> > @@ -2630,6 +2641,9 @@ static void spapr_init_cpus(SpaprMachineState *spapr)
> > SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(machine);
> > const char *type = spapr_get_cpu_core_type(machine->cpu_type);
> > const CPUArchIdList *possible_cpus;
> > + unsigned int smp_cpus = machine->smp.cpus;
> > + unsigned int smp_threads = machine->smp.threads;
> > + unsigned int max_cpus = machine->smp.max_cpus;
> > int boot_cores_nr = smp_cpus / smp_threads;
> > int i;
> >
> > @@ -3856,6 +3870,7 @@ static void spapr_core_pre_plug(HotplugHandler
> > *hotplug_dev, DeviceState *dev,
> > const char *type = object_get_typename(OBJECT(dev));
> > CPUArchId *core_slot;
> > int index;
> > + unsigned int smp_threads = machine->smp.threads;
> >
> > if (dev->hotplugged && !mc->has_hotpluggable_cpus) {
> > error_setg(&local_err, "CPU hotplug not supported for this
> > machine");
> > @@ -4110,14 +4125,16 @@ spapr_cpu_index_to_props(MachineState *machine,
> > unsigned cpu_index)
> >
> > static int64_t spapr_get_default_cpu_node_id(const MachineState *ms, int
> > idx)
> > {
> > - return idx / smp_cores % nb_numa_nodes;
> > + return idx / ms->smp.cores % nb_numa_nodes;
> > }
> >
> > static const CPUArchIdList *spapr_possible_cpu_arch_ids(MachineState
> > *machine)
> > {
> > int i;
> > + unsigned int smp_threads = machine->smp.threads;
> > + unsigned int smp_cpus = machine->smp.cpus;
> > const char *core_type;
> > - int spapr_max_cores = max_cpus / smp_threads;
> > + int spapr_max_cores = machine->smp.max_cpus / smp_threads;
> > MachineClass *mc = MACHINE_GET_CLASS(machine);
> >
> > if (!mc->has_hotpluggable_cpus) {
> > @@ -4240,6 +4257,7 @@ int spapr_get_vcpu_id(PowerPCCPU *cpu)
> > void spapr_set_vcpu_id(PowerPCCPU *cpu, int cpu_index, Error **errp)
> > {
> > SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
> > + MachineState *ms = MACHINE(spapr);
> > int vcpu_id;
> >
> > vcpu_id = spapr_vcpu_id(spapr, cpu_index);
> > @@ -4248,7 +4266,7 @@ void spapr_set_vcpu_id(PowerPCCPU *cpu, int
> > cpu_index, Error **errp)
> > error_setg(errp, "Can't create CPU with id %d in KVM", vcpu_id);
> > error_append_hint(errp, "Adjust the number of cpus to %d "
> > "or try to raise the number of threads per
> > core\n",
> > - vcpu_id * smp_threads / spapr->vsmt);
> > + vcpu_id * ms->smp.threads / spapr->vsmt);
> > return;
> > }
> >
> > diff --git a/hw/ppc/spapr_rtas.c b/hw/ppc/spapr_rtas.c
> > index ee24212765..c9ffe9786c 100644
> > --- a/hw/ppc/spapr_rtas.c
> > +++ b/hw/ppc/spapr_rtas.c
> > @@ -231,6 +231,8 @@ static void rtas_ibm_get_system_parameter(PowerPCCPU
> > *cpu,
> > target_ulong args,
> > uint32_t nret, target_ulong rets)
> > {
> > + MachineState *ms = MACHINE(qdev_get_machine());
> > + unsigned int max_cpus = ms->smp.max_cpus;
> > target_ulong parameter = rtas_ld(args, 0);
> > target_ulong buffer = rtas_ld(args, 1);
> > target_ulong length = rtas_ld(args, 2);
> > @@ -244,7 +246,7 @@ static void rtas_ibm_get_system_parameter(PowerPCCPU
> > *cpu,
> > "MaxPlatProcs=%d",
> > max_cpus,
> > current_machine->ram_size / MiB,
> > - smp_cpus,
> > + ms->smp.cpus,
> > max_cpus);
> > ret = sysparm_st(buffer, length, param_val, strlen(param_val) + 1);
> > g_free(param_val);
> > --
> > 2.21.0
> >
> >
>
> --
> Eduardo
--
Eduardo