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| author | Igor Mammedov | 2020-02-19 17:08:38 +0100 |
|---|---|---|
| committer | Patchew Importer | 2020-02-19 17:49:53 +0100 |
| commit | 82b911aaff3ba33a3c028a533c5e169c274a7c3d (patch) | |
| tree | 884387b1f8c4657ab5a1e8e366d7a159f11ca282 /include | |
| parent | machine: alias -mem-path and -mem-prealloc into memory-foo backend (diff) | |
| download | qemu-82b911aaff3ba33a3c028a533c5e169c274a7c3d.tar.gz qemu-82b911aaff3ba33a3c028a533c5e169c274a7c3d.tar.xz qemu-82b911aaff3ba33a3c028a533c5e169c274a7c3d.zip | |
machine: introduce convenience MachineState::ram
the new field will be used by boards to get access to main
RAM memory region and will help to save boiler plate in
boards which often introduce a field or variable just for
this purpose.
Memory region will be equivalent to what currently used
memory_region_allocate_system_memory() is returning apart
from that it will come from hostmem backend.
Followup patches will incrementally switch boards to using
RAM from MachineState::ram.
Patch takes care of non-NUMA case and follow up patch will
initialize MachineState::ram for NUMA case.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200219160953.13771-5-imammedo@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/hw/boards.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/include/hw/boards.h b/include/hw/boards.h index 8e536cafb2..ae2b60fb5e 100644 --- a/include/hw/boards.h +++ b/include/hw/boards.h @@ -73,7 +73,12 @@ void machine_set_cpu_numa_node(MachineState *machine, Error **errp); void machine_class_allow_dynamic_sysbus_dev(MachineClass *mc, const char *type); - +/* + * Checks that backend isn't used, preps it for exclusive usage and + * returns migratable MemoryRegion provided by backend. + */ +MemoryRegion *machine_consume_memdev(MachineState *machine, + HostMemoryBackend *backend); /** * CPUArchId: @@ -295,6 +300,11 @@ struct MachineState { bool enable_graphics; char *memory_encryption; char *ram_memdev_id; + /* + * convenience alias to ram_memdev_id backend memory region + * or to numa container memory region + */ + MemoryRegion *ram; DeviceMemoryState *device_memory; ram_addr_t ram_size; |