Software is allowed to write up to a cache line of data to the flush hint address (ACPI spec 6.1, Table 5-135). NVDIMM ACPI code needs this parameter to decide the address space size for flush hint addresses.
Signed-off-by: Haozhong Zhang <haozhong.zh...@intel.com> --- hw/acpi/nvdimm.c | 5 ++++- hw/i386/pc_piix.c | 2 +- hw/i386/pc_q35.c | 2 +- include/hw/mem/nvdimm.h | 5 ++++- 4 files changed, 10 insertions(+), 4 deletions(-) diff --git a/hw/acpi/nvdimm.c b/hw/acpi/nvdimm.c index 8e7d6ec..ea2ac3e 100644 --- a/hw/acpi/nvdimm.c +++ b/hw/acpi/nvdimm.c @@ -881,7 +881,8 @@ void nvdimm_acpi_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev) } void nvdimm_init_acpi_state(AcpiNVDIMMState *state, MemoryRegion *io, - FWCfgState *fw_cfg, Object *owner) + FWCfgState *fw_cfg, Object *owner, + unsigned int cache_line_size) { memory_region_init_io(&state->io_mr, owner, &nvdimm_dsm_ops, state, "nvdimm-acpi-io", NVDIMM_ACPI_IO_LEN); @@ -893,6 +894,8 @@ void nvdimm_init_acpi_state(AcpiNVDIMMState *state, MemoryRegion *io, state->dsm_mem->len); nvdimm_init_fit_buffer(&state->fit_buf); + + state->cache_line_size = cache_line_size; } #define NVDIMM_COMMON_DSM "NCAL" diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c index 9f102aa..81dd379 100644 --- a/hw/i386/pc_piix.c +++ b/hw/i386/pc_piix.c @@ -298,7 +298,7 @@ static void pc_init1(MachineState *machine, if (pcms->acpi_nvdimm_state.is_enabled) { nvdimm_init_acpi_state(&pcms->acpi_nvdimm_state, system_io, - pcms->fw_cfg, OBJECT(pcms)); + pcms->fw_cfg, OBJECT(pcms), 64); } } diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c index dd792a8..19f5515 100644 --- a/hw/i386/pc_q35.c +++ b/hw/i386/pc_q35.c @@ -272,7 +272,7 @@ static void pc_q35_init(MachineState *machine) if (pcms->acpi_nvdimm_state.is_enabled) { nvdimm_init_acpi_state(&pcms->acpi_nvdimm_state, system_io, - pcms->fw_cfg, OBJECT(pcms)); + pcms->fw_cfg, OBJECT(pcms), 64); } } diff --git a/include/hw/mem/nvdimm.h b/include/hw/mem/nvdimm.h index eb71f41..888def6 100644 --- a/include/hw/mem/nvdimm.h +++ b/include/hw/mem/nvdimm.h @@ -134,11 +134,14 @@ struct AcpiNVDIMMState { /* the IO region used by OSPM to transfer control to QEMU. */ MemoryRegion io_mr; + + unsigned int cache_line_size; }; typedef struct AcpiNVDIMMState AcpiNVDIMMState; void nvdimm_init_acpi_state(AcpiNVDIMMState *state, MemoryRegion *io, - FWCfgState *fw_cfg, Object *owner); + FWCfgState *fw_cfg, Object *owner, + unsigned int cache_line_size); void nvdimm_build_acpi(GArray *table_offsets, GArray *table_data, BIOSLinker *linker, AcpiNVDIMMState *state, uint32_t ram_slots); -- 2.10.1