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Re: [Qemu-devel] [PATCH v3 2/2] machine: Move nvdimms state into struct
From: |
Philippe Mathieu-Daudé |
Subject: |
Re: [Qemu-devel] [PATCH v3 2/2] machine: Move nvdimms state into struct MachineState |
Date: |
Fri, 8 Mar 2019 22:04:40 +0100 |
On Fri, Mar 8, 2019 at 7:16 PM Auger Eric <address@hidden> wrote:
> Hi Philippe,
> On 3/8/19 7:02 PM, Philippe Mathieu-Daudé wrote:
> > hi Eric,
> >
> > On 3/8/19 4:25 PM, Eric Auger wrote:
> >> As NVDIMM support is looming for ARM and SPAPR, let's
> >> move the acpi_nvdimm_state to the generic machine struct
> >> instead of duplicating the same code in several machines.
> >> It is also renamed into nvdimms_state and becomes a pointer.
> >>
> >> nvdimm and nvdimm-persistence become generic machine options.
> >> They become guarded by a nvdimm_supported machine class member.
> >> We also add a description for those options.
> >>
> >> Signed-off-by: Eric Auger <address@hidden>
> >> Suggested-by: Igor Mammedov <address@hidden>
> >>
> >> ---
> >> v2 -> v3
> >> - nvdimms_state becomes a pointer
> >> - add machine class nvdimm_supported
> >>
> >> v1 -> v2:
> >> - s/acpi_nvdimm_state/nvdimms_state
> >> - remove ms->nvdimms_state.is_enabled initialization to false.
> >> ---
> >> hw/core/machine.c | 65 ++++++++++++++++++++++++++++++++++++++++++++
> >> hw/i386/acpi-build.c | 6 ++--
> >> hw/i386/pc.c | 57 ++++----------------------------------
> >> hw/i386/pc_piix.c | 4 +--
> >> hw/i386/pc_q35.c | 4 +--
> >> include/hw/boards.h | 2 ++
> >> include/hw/i386/pc.h | 4 ---
> >> 7 files changed, 79 insertions(+), 63 deletions(-)
> >>
> >> diff --git a/hw/core/machine.c b/hw/core/machine.c
> >> index 766ca5899d..29a33194a9 100644
> >> --- a/hw/core/machine.c
> >> +++ b/hw/core/machine.c
> >> @@ -22,6 +22,7 @@
> >> #include "qemu/error-report.h"
> >> #include "sysemu/qtest.h"
> >> #include "hw/pci/pci.h"
> >> +#include "hw/mem/nvdimm.h"
> >>
> >> GlobalProperty hw_compat_3_1[] = {
> >> { "pcie-root-port", "x-speed", "2_5" },
> >> @@ -481,6 +482,47 @@ static void machine_set_memory_encryption(Object
> >> *obj, const char *value,
> >> ms->memory_encryption = g_strdup(value);
> >> }
> >>
> >> +static bool machine_get_nvdimm(Object *obj, Error **errp)
> >> +{
> >> + MachineState *ms = MACHINE(obj);
> >> +
> >> + return ms->nvdimms_state->is_enabled;
> >> +}
> >> +
> >> +static void machine_set_nvdimm(Object *obj, bool value, Error **errp)
> >> +{
> >> + MachineState *ms = MACHINE(obj);
> >> +
> >> + ms->nvdimms_state->is_enabled = value;
> >> +}
> >> +
> >> +static char *machine_get_nvdimm_persistence(Object *obj, Error **errp)
> >> +{
> >> + MachineState *ms = MACHINE(obj);
> >> +
> >> + return g_strdup(ms->nvdimms_state->persistence_string);
> >> +}
> >> +
> >> +static void machine_set_nvdimm_persistence(Object *obj, const char *value,
> >> + Error **errp)
> >> +{
> >> + MachineState *ms = MACHINE(obj);
> >> + NVDIMMState *nvdimms_state = ms->nvdimms_state;
> >> +
> >> + if (strcmp(value, "cpu") == 0) {
> >> + nvdimms_state->persistence = 3;
> >> + } else if (strcmp(value, "mem-ctrl") == 0) {
> >> + nvdimms_state->persistence = 2;
> >> + } else {
> >> + error_setg(errp, "-machine nvdimm-persistence=%s: unsupported
> >> option",
> >> + value);
> >> + return;
> >> + }
> >> +
> >> + g_free(nvdimms_state->persistence_string);
> >> + nvdimms_state->persistence_string = g_strdup(value);
> >> +}
> >> +
> >> void machine_class_allow_dynamic_sysbus_dev(MachineClass *mc, const char
> >> *type)
> >> {
> >> strList *item = g_new0(strList, 1);
> >> @@ -791,6 +833,28 @@ static void machine_initfn(Object *obj)
> >> ms->mem_merge = true;
> >> ms->enable_graphics = true;
> >>
> >> + if (mc->nvdimm_supported) {
> >> + ObjectClass *oc = OBJECT_CLASS(mc);
> >> +
> >> + ms->nvdimms_state = g_new0(NVDIMMState, 1);
> >> + object_class_property_add_bool(oc, "nvdimm",
> >> + machine_get_nvdimm,
> >> machine_set_nvdimm,
> >> + &error_abort);
> >> + object_class_property_set_description(oc, "nvdimm",
> >> + "Set on/off to
> >> enable/disable "
> >> + "NVDIMM instantiation",
> >> NULL);
> >> +
> >> + object_class_property_add_str(oc, "nvdimm-persistence",
> >> + machine_get_nvdimm_persistence,
> >> + machine_set_nvdimm_persistence,
> >> + &error_abort);
> >> + object_class_property_set_description(oc, "nvdimm-persistence",
> >> + "Set NVDIMM persistence"
> >> + "Valid values are cpu,
> >> mem-ctrl",
> >> + NULL);
> >> + }
> >> +
> >> +
> >> /* Register notifier when init is done for sysbus sanity checks */
> >> ms->sysbus_notifier.notify = machine_init_notify;
> >> qemu_add_machine_init_done_notifier(&ms->sysbus_notifier);
> >> @@ -809,6 +873,7 @@ static void machine_finalize(Object *obj)
> >> g_free(ms->dt_compatible);
> >> g_free(ms->firmware);
> >> g_free(ms->device_memory);
> >> + g_free(ms->nvdimms_state);
> >> }
> >>
> >> bool machine_usb(MachineState *machine)
> >> diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
> >> index 9ecc96dcc7..416da318ae 100644
> >> --- a/hw/i386/acpi-build.c
> >> +++ b/hw/i386/acpi-build.c
> >> @@ -1867,7 +1867,7 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
> >> aml_append(scope, method);
> >> }
> >>
> >> - if (pcms->acpi_nvdimm_state.is_enabled) {
> >> + if (machine->nvdimms_state->is_enabled) {
> >> method = aml_method("_E04", 0, AML_NOTSERIALIZED);
> >> aml_append(method, aml_notify(aml_name("\\_SB.NVDR"),
> >> aml_int(0x80)));
> >> @@ -2704,9 +2704,9 @@ void acpi_build(AcpiBuildTables *tables,
> >> MachineState *machine)
> >> build_dmar_q35(tables_blob, tables->linker);
> >> }
> >> }
> >> - if (pcms->acpi_nvdimm_state.is_enabled) {
> >> + if (machine->nvdimms_state->is_enabled) {
> >> nvdimm_build_acpi(table_offsets, tables_blob, tables->linker,
> >> - &pcms->acpi_nvdimm_state, machine->ram_slots);
> >> + machine->nvdimms_state, machine->ram_slots);
> >> }
> >>
> >> /* Add tables supplied by user (if any) */
> >> diff --git a/hw/i386/pc.c b/hw/i386/pc.c
> >> index 0338dbe9da..71385cfac9 100644
> >> --- a/hw/i386/pc.c
> >> +++ b/hw/i386/pc.c
> >> @@ -2069,6 +2069,7 @@ static void pc_memory_pre_plug(HotplugHandler
> >> *hotplug_dev, DeviceState *dev,
> >> {
> >> const PCMachineState *pcms = PC_MACHINE(hotplug_dev);
> >> const PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
> >> + const MachineState *ms = MACHINE(hotplug_dev);
> >> const bool is_nvdimm = object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM);
> >> const uint64_t legacy_align = TARGET_PAGE_SIZE;
> >>
> >> @@ -2083,7 +2084,7 @@ static void pc_memory_pre_plug(HotplugHandler
> >> *hotplug_dev, DeviceState *dev,
> >> return;
> >> }
> >>
> >> - if (is_nvdimm && !pcms->acpi_nvdimm_state.is_enabled) {
> >> + if (is_nvdimm && !ms->nvdimms_state->is_enabled) {
> >> error_setg(errp, "nvdimm is not enabled: missing 'nvdimm' in
> >> '-M'");
> >> return;
> >> }
> >> @@ -2097,6 +2098,7 @@ static void pc_memory_plug(HotplugHandler
> >> *hotplug_dev,
> >> {
> >> Error *local_err = NULL;
> >> PCMachineState *pcms = PC_MACHINE(hotplug_dev);
> >> + MachineState *ms = MACHINE(hotplug_dev);
> >> bool is_nvdimm = object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM);
> >>
> >> pc_dimm_plug(PC_DIMM(dev), MACHINE(pcms), &local_err);
> >> @@ -2105,7 +2107,7 @@ static void pc_memory_plug(HotplugHandler
> >> *hotplug_dev,
> >> }
> >>
> >> if (is_nvdimm) {
> >> - nvdimm_plug(&pcms->acpi_nvdimm_state);
> >> + nvdimm_plug(ms->nvdimms_state);
> >> }
> >>
> >> hotplug_handler_plug(HOTPLUG_HANDLER(pcms->acpi_dev), dev,
> >> &error_abort);
> >> @@ -2546,47 +2548,6 @@ static void pc_machine_set_smm(Object *obj, Visitor
> >> *v, const char *name,
> >> visit_type_OnOffAuto(v, name, &pcms->smm, errp);
> >> }
> >>
> >> -static bool pc_machine_get_nvdimm(Object *obj, Error **errp)
> >> -{
> >> - PCMachineState *pcms = PC_MACHINE(obj);
> >> -
> >> - return pcms->acpi_nvdimm_state.is_enabled;
> >> -}
> >> -
> >> -static void pc_machine_set_nvdimm(Object *obj, bool value, Error **errp)
> >> -{
> >> - PCMachineState *pcms = PC_MACHINE(obj);
> >> -
> >> - pcms->acpi_nvdimm_state.is_enabled = value;
> >> -}
> >> -
> >> -static char *pc_machine_get_nvdimm_persistence(Object *obj, Error **errp)
> >> -{
> >> - PCMachineState *pcms = PC_MACHINE(obj);
> >> -
> >> - return g_strdup(pcms->acpi_nvdimm_state.persistence_string);
> >> -}
> >> -
> >> -static void pc_machine_set_nvdimm_persistence(Object *obj, const char
> >> *value,
> >> - Error **errp)
> >> -{
> >> - PCMachineState *pcms = PC_MACHINE(obj);
> >> - NVDIMMState *nvdimm_state = &pcms->acpi_nvdimm_state;
> >> -
> >> - if (strcmp(value, "cpu") == 0)
> >> - nvdimm_state->persistence = 3;
> >> - else if (strcmp(value, "mem-ctrl") == 0)
> >> - nvdimm_state->persistence = 2;
> >> - else {
> >> - error_setg(errp, "-machine nvdimm-persistence=%s: unsupported
> >> option",
> >> - value);
> >> - return;
> >> - }
> >> -
> >> - g_free(nvdimm_state->persistence_string);
> >> - nvdimm_state->persistence_string = g_strdup(value);
> >> -}
> >> -
> >> static bool pc_machine_get_smbus(Object *obj, Error **errp)
> >> {
> >> PCMachineState *pcms = PC_MACHINE(obj);
> >> @@ -2636,8 +2597,6 @@ static void pc_machine_initfn(Object *obj)
> >> pcms->max_ram_below_4g = 0; /* use default */
> >> pcms->smm = ON_OFF_AUTO_AUTO;
> >> pcms->vmport = ON_OFF_AUTO_AUTO;
> >> - /* nvdimm is disabled on default. */
> >> - pcms->acpi_nvdimm_state.is_enabled = false;
> >> /* acpi build is enabled by default if machine supports it */
> >> pcms->acpi_build_enabled = PC_MACHINE_GET_CLASS(pcms)->has_acpi_build;
> >> pcms->smbus_enabled = true;
> >> @@ -2774,6 +2733,7 @@ static void pc_machine_class_init(ObjectClass *oc,
> >> void *data)
> >> hc->unplug = pc_machine_device_unplug_cb;
> >> nc->nmi_monitor_handler = x86_nmi;
> >> mc->default_cpu_type = TARGET_DEFAULT_CPU_TYPE;
> >> + mc->nvdimm_supported = true;
> >>
> >> object_class_property_add(oc, PC_MACHINE_DEVMEM_REGION_SIZE, "int",
> >> pc_machine_get_device_memory_region_size, NULL,
> >> @@ -2798,13 +2758,6 @@ static void pc_machine_class_init(ObjectClass *oc,
> >> void *data)
> >> object_class_property_set_description(oc, PC_MACHINE_VMPORT,
> >> "Enable vmport (pc & q35)", &error_abort);
> >>
> >> - object_class_property_add_bool(oc, PC_MACHINE_NVDIMM,
> >> - pc_machine_get_nvdimm, pc_machine_set_nvdimm, &error_abort);
> >> -
> >> - object_class_property_add_str(oc, PC_MACHINE_NVDIMM_PERSIST,
> >> - pc_machine_get_nvdimm_persistence,
> >> - pc_machine_set_nvdimm_persistence, &error_abort);
> >> -
> >> object_class_property_add_bool(oc, PC_MACHINE_SMBUS,
> >> pc_machine_get_smbus, pc_machine_set_smbus, &error_abort);
> >>
> >> diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
> >> index 8770ecada9..8ad8e885c6 100644
> >> --- a/hw/i386/pc_piix.c
> >> +++ b/hw/i386/pc_piix.c
> >> @@ -297,8 +297,8 @@ static void pc_init1(MachineState *machine,
> >> PC_MACHINE_ACPI_DEVICE_PROP,
> >> &error_abort);
> >> }
> >>
> >> - if (pcms->acpi_nvdimm_state.is_enabled) {
> >> - nvdimm_init_acpi_state(&pcms->acpi_nvdimm_state, system_io,
> >> + if (machine->nvdimms_state->is_enabled) {
> >> + nvdimm_init_acpi_state(machine->nvdimms_state, system_io,
> >> pcms->fw_cfg, OBJECT(pcms));
> >> }
> >> }
> >> diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
> >> index cfb9043e12..372c6b73be 100644
> >> --- a/hw/i386/pc_q35.c
> >> +++ b/hw/i386/pc_q35.c
> >> @@ -329,8 +329,8 @@ static void pc_q35_init(MachineState *machine)
> >> pc_vga_init(isa_bus, host_bus);
> >> pc_nic_init(pcmc, isa_bus, host_bus);
> >>
> >> - if (pcms->acpi_nvdimm_state.is_enabled) {
> >> - nvdimm_init_acpi_state(&pcms->acpi_nvdimm_state, system_io,
> >> + if (machine->nvdimms_state->is_enabled) {
> >> + nvdimm_init_acpi_state(machine->nvdimms_state, system_io,
> >> pcms->fw_cfg, OBJECT(pcms));
> >> }
> >> }
> >> diff --git a/include/hw/boards.h b/include/hw/boards.h
> >> index 9690c71a6d..e231860666 100644
> >> --- a/include/hw/boards.h
> >> +++ b/include/hw/boards.h
> >> @@ -210,6 +210,7 @@ struct MachineClass {
> >> int nb_nodes, ram_addr_t size);
> >> bool ignore_boot_device_suffixes;
> >> bool smbus_no_migration_support;
> >> + bool nvdimm_supported;
> >>
> >> HotplugHandler *(*get_hotplug_handler)(MachineState *machine,
> >> DeviceState *dev);
> >> @@ -272,6 +273,7 @@ struct MachineState {
> >> const char *cpu_type;
> >> AccelState *accelerator;
> >> CPUArchIdList *possible_cpus;
> >> + struct NVDIMMState *nvdimms_state;
> >
> > What about simply 'nvdimm'?
> > - it is already part of a state
> > - no plural, there is only 1 state
> Well actually I followed Igor's suggestion
> (https://www.mail-archive.com/address@hidden/msg601980.html).
>
> The state contains information about all present NVDIMMs (See
> NvdimmFitBuffer comment and "fit: FIT structures for present NVDIMMs").
So 'nvdimms' then :)
Anyway, Igor's call.
> No strong opinion though.
>
> Thanks
>
> Eric
>
>
>
> >
> >> };
> >>
> >> #define DEFINE_MACHINE(namestr, machine_initfn) \
> >> diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
> >> index 94fb620d65..263a6343ff 100644
> >> --- a/include/hw/i386/pc.h
> >> +++ b/include/hw/i386/pc.h
> >> @@ -45,8 +45,6 @@ struct PCMachineState {
> >> OnOffAuto vmport;
> >> OnOffAuto smm;
> >>
> >> - NVDIMMState acpi_nvdimm_state;
> >> -
> >> bool acpi_build_enabled;
> >> bool smbus_enabled;
> >> bool sata_enabled;
> >> @@ -74,8 +72,6 @@ struct PCMachineState {
> >> #define PC_MACHINE_MAX_RAM_BELOW_4G "max-ram-below-4g"
> >> #define PC_MACHINE_VMPORT "vmport"
> >> #define PC_MACHINE_SMM "smm"
> >> -#define PC_MACHINE_NVDIMM "nvdimm"
> >> -#define PC_MACHINE_NVDIMM_PERSIST "nvdimm-persistence"
> >> #define PC_MACHINE_SMBUS "smbus"
> >> #define PC_MACHINE_SATA "sata"
> >> #define PC_MACHINE_PIT "pit"
> >>