On Fri, 14 Jun 2019 23:56:23 +0800
Tao Xu <tao3...@intel.com> wrote:
> Add build_mem_ranges callback to AcpiDeviceIfClass and use
> it for generating SRAT and HMAT numa memory ranges.
>
> Suggested-by: Igor Mammedov <imamm...@redhat.com>
> Co-developed-by: Liu Jingqi <jingqi....@intel.com>
> Signed-off-by: Liu Jingqi <jingqi....@intel.com>
> Signed-off-by: Tao Xu <tao3...@intel.com>
> ---
>
> Changes in v5 -> v4:
> - Add the missing if 'mem_len > 0' in pc_build_mem_ranges() (Igor)
> - Correct the descriptions of build_mem_ranges
> in AcpiDeviceIfClass (Igor)
> - Use GArray for NUMA memory ranges data (Igor)
> - Add the reason of using stub (Igor)
> ---
> hw/acpi/piix4.c | 1 +
> hw/i386/acpi-build.c | 133 +++++++++++++++++----------
> hw/isa/lpc_ich9.c | 1 +
> include/hw/acpi/acpi_dev_interface.h | 4 +
> include/hw/i386/pc.h | 1 +
> include/sysemu/numa.h | 12 +++
> stubs/Makefile.objs | 1 +
> stubs/pc_build_mem_ranges.c | 14 +++
> 8 files changed, 120 insertions(+), 47 deletions(-)
> create mode 100644 stubs/pc_build_mem_ranges.c
>
> diff --git a/hw/acpi/piix4.c b/hw/acpi/piix4.c
> index ec4e186cec..bc078c1ad7 100644
> --- a/hw/acpi/piix4.c
> +++ b/hw/acpi/piix4.c
> @@ -702,6 +702,7 @@ static void piix4_pm_class_init(ObjectClass *klass, void
> *data)
> adevc->ospm_status = piix4_ospm_status;
> adevc->send_event = piix4_send_gpe;
> adevc->madt_cpu = pc_madt_cpu_entry;
> + adevc->build_mem_ranges = pc_build_mem_ranges;
> }
>
> static const TypeInfo piix4_pm_info = {
> diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
> index 055e677c30..44dd447fa5 100644
> --- a/hw/i386/acpi-build.c
> +++ b/hw/i386/acpi-build.c
> @@ -2279,18 +2279,89 @@ build_tpm2(GArray *table_data, BIOSLinker *linker,
> GArray *tcpalog)
> #define HOLE_640K_START (640 * KiB)
> #define HOLE_640K_END (1 * MiB)
>
> +void pc_build_mem_ranges(AcpiDeviceIf *adev, MachineState *ms)
> +{
> + uint64_t mem_len, mem_base, next_base;
> + int i;
> + PCMachineState *pcms = PC_MACHINE(ms);
> + NumaState *nstat = ms->numa_state;
> + NumaMemRange *mem_range;
> + nstat->mem_ranges_num = 0;
> + next_base = 0;
> +
> + /*
> + * the memory map is a bit tricky, it contains at least one hole
> + * from 640k-1M and possibly another one from 3.5G-4G.
> + */
> +
> + for (i = 0; i < pcms->numa_nodes; ++i) {
> + mem_base = next_base;
> + mem_len = pcms->node_mem[i];
> + next_base = mem_base + mem_len;
> +
> + /* Cut out the 640K hole */
> + if (mem_base <= HOLE_640K_START &&
> + next_base > HOLE_640K_START) {
> + mem_len -= next_base - HOLE_640K_START;
> + if (mem_len > 0) {
> + mem_range = acpi_data_push(nstat->mem_ranges,
> + sizeof *mem_range);
> + mem_range->base = mem_base;
> + mem_range->length = mem_len;
> + mem_range->node = i;
> + nstat->mem_ranges_num++;
> + }
> +
> + /* Check for the rare case: 640K < RAM < 1M */
> + if (next_base <= HOLE_640K_END) {
> + next_base = HOLE_640K_END;
> + continue;
> + }
> + mem_base = HOLE_640K_END;
> + mem_len = next_base - HOLE_640K_END;
> + }
> +
> + /* Cut out the ACPI_PCI hole */
> + if (mem_base <= pcms->below_4g_mem_size &&
> + next_base > pcms->below_4g_mem_size) {
> + mem_len -= next_base - pcms->below_4g_mem_size;
> + if (mem_len > 0) {
> + mem_range = acpi_data_push(nstat->mem_ranges,
> + sizeof *mem_range);
> + mem_range->base = mem_base;
> + mem_range->length = mem_len;
> + mem_range->node = i;
> + nstat->mem_ranges_num++;
> + }
> + mem_base = 1ULL << 32;
> + mem_len = next_base - pcms->below_4g_mem_size;
> + next_base = mem_base + mem_len;
> + }
> + if (mem_len > 0) {
> + mem_range = acpi_data_push(nstat->mem_ranges,
> + sizeof *mem_range);
> + mem_range->base = mem_base;
> + mem_range->length = mem_len;
> + mem_range->node = i;
> + nstat->mem_ranges_num++;
> + }
> + }
> +}
> +
> static void
> build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
> {
> AcpiSystemResourceAffinityTable *srat;
> AcpiSratMemoryAffinity *numamem;
>
> - int i;
> - int srat_start, numa_start, slots;
> - uint64_t mem_len, mem_base, next_base;
> + int i, srat_start, numa_start, slots;
> MachineClass *mc = MACHINE_GET_CLASS(machine);
> const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(machine);
> PCMachineState *pcms = PC_MACHINE(machine);
> + AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(pcms->acpi_dev);
> + AcpiDeviceIf *adev = ACPI_DEVICE_IF(pcms->acpi_dev);
> + NumaState *nstat = machine->numa_state;
> + NumaMemRange *mem_range;
> ram_addr_t hotplugabble_address_space_size =
> object_property_get_int(OBJECT(pcms), PC_MACHINE_DEVMEM_REGION_SIZE,
> NULL);
> @@ -2327,57 +2398,25 @@ build_srat(GArray *table_data, BIOSLinker *linker,
> MachineState *machine)
> }
> }
>
> + if (pcms->numa_nodes && !nstat->mem_ranges_num) {
suggest to drop nstat->mem_ranges_num field and use nstat->mem_ranges->len
instead,
also its probably better to initialize nstat->mem_ranges
at the same place where ms->numa_state is initialized, so that
a specific platform code won't need to duplicate it.
> + nstat->mem_ranges = g_array_new(false, true /* clear */,
> + sizeof *mem_range);
> + adevc->build_mem_ranges(adev, machine);
> + }
>
> - /* the memory map is a bit tricky, it contains at least one hole
> - * from 640k-1M and possibly another one from 3.5G-4G.
> - */
> - next_base = 0;
> numa_start = table_data->len;
>
> - for (i = 1; i < pcms->numa_nodes + 1; ++i) {
> - mem_base = next_base;
> - mem_len = pcms->node_mem[i - 1];
> - next_base = mem_base + mem_len;
> -
> - /* Cut out the 640K hole */
> - if (mem_base <= HOLE_640K_START &&
> - next_base > HOLE_640K_START) {
> - mem_len -= next_base - HOLE_640K_START;
> - if (mem_len > 0) {
> - numamem = acpi_data_push(table_data, sizeof *numamem);
> - build_srat_memory(numamem, mem_base, mem_len, i - 1,
> - MEM_AFFINITY_ENABLED);
> - }
> -
> - /* Check for the rare case: 640K < RAM < 1M */
> - if (next_base <= HOLE_640K_END) {
> - next_base = HOLE_640K_END;
> - continue;
> - }
> - mem_base = HOLE_640K_END;
> - mem_len = next_base - HOLE_640K_END;
> - }
> -
> - /* Cut out the ACPI_PCI hole */
> - if (mem_base <= pcms->below_4g_mem_size &&
> - next_base > pcms->below_4g_mem_size) {
> - mem_len -= next_base - pcms->below_4g_mem_size;
> - if (mem_len > 0) {
> - numamem = acpi_data_push(table_data, sizeof *numamem);
> - build_srat_memory(numamem, mem_base, mem_len, i - 1,
> - MEM_AFFINITY_ENABLED);
> - }
> - mem_base = 1ULL << 32;
> - mem_len = next_base - pcms->below_4g_mem_size;
> - next_base = mem_base + mem_len;
> - }
> -
> - if (mem_len > 0) {
> + for (i = 0; i < nstat->mem_ranges_num; i++) {
> + mem_range = &g_array_index(nstat->mem_ranges, NumaMemRange, i);
> + if (mem_range->length > 0) {
why do we have this condition,
I'd assume adevc->build_mem_ranges() shouldn't return empty ranges.
> numamem = acpi_data_push(table_data, sizeof *numamem);
> - build_srat_memory(numamem, mem_base, mem_len, i - 1,
> + build_srat_memory(numamem, mem_range->base,
> + mem_range->length,
> + mem_range->node,
> MEM_AFFINITY_ENABLED);
> }
> }
> +
> slots = (table_data->len - numa_start) / sizeof *numamem;
> for (; slots < pcms->numa_nodes + 2; slots++) {
> numamem = acpi_data_push(table_data, sizeof *numamem);
> diff --git a/hw/isa/lpc_ich9.c b/hw/isa/lpc_ich9.c
> index 35d17246e9..20d919c63d 100644
> --- a/hw/isa/lpc_ich9.c
> +++ b/hw/isa/lpc_ich9.c
> @@ -801,6 +801,7 @@ static void ich9_lpc_class_init(ObjectClass *klass, void
> *data)
> adevc->ospm_status = ich9_pm_ospm_status;
> adevc->send_event = ich9_send_gpe;
> adevc->madt_cpu = pc_madt_cpu_entry;
> + adevc->build_mem_ranges = pc_build_mem_ranges;
> }
>
> static const TypeInfo ich9_lpc_info = {
> diff --git a/include/hw/acpi/acpi_dev_interface.h
> b/include/hw/acpi/acpi_dev_interface.h
> index 43ff119179..5956b5ea33 100644
> --- a/include/hw/acpi/acpi_dev_interface.h
> +++ b/include/hw/acpi/acpi_dev_interface.h
> @@ -39,6 +39,8 @@ void acpi_send_event(DeviceState *dev, AcpiEventStatusBits
> event);
> * for CPU indexed by @uid in @apic_ids array,
> * returned structure types are:
> * 0 - Local APIC, 9 - Local x2APIC, 0xB - GICC
> + * build_mem_ranges: build memory ranges of ACPI SRAT (except misc
> + * and hotplug SRAT ranges) and HMAT
> *
> * Interface is designed for providing unified interface
> * to generic ACPI functionality that could be used without
> @@ -54,5 +56,7 @@ typedef struct AcpiDeviceIfClass {
> void (*send_event)(AcpiDeviceIf *adev, AcpiEventStatusBits ev);
> void (*madt_cpu)(AcpiDeviceIf *adev, int uid,
> const CPUArchIdList *apic_ids, GArray *entry);
> + void (*build_mem_ranges)(AcpiDeviceIf *adev, MachineState *ms);
> +
> } AcpiDeviceIfClass;
> #endif
> diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
> index 5d5636241e..21b9ac3d11 100644
> --- a/include/hw/i386/pc.h
> +++ b/include/hw/i386/pc.h
> @@ -281,6 +281,7 @@ void pc_system_firmware_init(PCMachineState *pcms,
> MemoryRegion *rom_memory);
> /* acpi-build.c */
> void pc_madt_cpu_entry(AcpiDeviceIf *adev, int uid,
> const CPUArchIdList *apic_ids, GArray *entry);
> +void pc_build_mem_ranges(AcpiDeviceIf *adev, MachineState *ms);
>
> /* e820 types */
> #define E820_RAM 1
> diff --git a/include/sysemu/numa.h b/include/sysemu/numa.h
> index 437eb21fef..e3c85b77bc 100644
> --- a/include/sysemu/numa.h
> +++ b/include/sysemu/numa.h
> @@ -20,6 +20,12 @@ struct NumaNodeMem {
> uint64_t node_plugged_mem;
> };
>
> +typedef struct NumaMemRange {
> + uint64_t base;
> + uint64_t length;
> + uint32_t node;
> +} NumaMemRange;
> +
> struct NumaState {
> /* Number of NUMA nodes */
> int num_nodes;
> @@ -29,6 +35,12 @@ struct NumaState {
>
> /* NUMA nodes information */
> NodeInfo nodes[MAX_NODES];
> +
> + /* Number of NUMA memory ranges */
> + uint32_t mem_ranges_num;
> +
> + /* NUMA memory ranges */
> + GArray *mem_ranges;
> };
> typedef struct NumaState NumaState;
>
> diff --git a/stubs/Makefile.objs b/stubs/Makefile.objs
> index 9c7393b08c..4f0cdc1a45 100644
> --- a/stubs/Makefile.objs
> +++ b/stubs/Makefile.objs
> @@ -33,6 +33,7 @@ stub-obj-y += qmp_memory_device.o
> stub-obj-y += target-monitor-defs.o
> stub-obj-y += target-get-monitor-def.o
> stub-obj-y += pc_madt_cpu_entry.o
> +stub-obj-y += pc_build_mem_ranges.o
> stub-obj-y += vmgenid.o
> stub-obj-y += xen-common.o
> stub-obj-y += xen-hvm.o
> diff --git a/stubs/pc_build_mem_ranges.c b/stubs/pc_build_mem_ranges.c
> new file mode 100644
> index 0000000000..997cdfe00b
> --- /dev/null
> +++ b/stubs/pc_build_mem_ranges.c
> @@ -0,0 +1,14 @@
> +/*
> + * Stub for pc_build_mem_ranges().
> + * piix4 is used not only pc, but also mips and etc. In order to add
> + * build_mem_ranges callback to AcpiDeviceIfClass and use pc_build_mem_ranges
> + * in hw/acpi/piix4.c, pc_build_mem_ranges() stub is added to make other arch
> + * can compile successfully.
> + */
> +
> +#include "qemu/osdep.h"
> +#include "hw/i386/pc.h"
> +
> +void pc_build_mem_ranges(AcpiDeviceIf *adev, MachineState *ms)
> +{
> +}
