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| author | Igor Mammedov | 2020-02-19 17:08:37 +0100 |
|---|---|---|
| committer | Patchew Importer | 2020-02-19 17:49:53 +0100 |
| commit | 900c0ba373aada4c13d47d95330aa72ec4067ba5 (patch) | |
| tree | 33a2a784e058d805440f8e2c8f7dac7ba6f4a1a5 /include | |
| parent | machine: introduce memory-backend property (diff) | |
| download | qemu-900c0ba373aada4c13d47d95330aa72ec4067ba5.tar.gz qemu-900c0ba373aada4c13d47d95330aa72ec4067ba5.tar.xz qemu-900c0ba373aada4c13d47d95330aa72ec4067ba5.zip | |
machine: alias -mem-path and -mem-prealloc into memory-foo backend
Allow machine to opt in for hostmem backend based initial RAM
even if user uses old -mem-path/prealloc options by providing
MachineClass::default_ram_id
Follow up patches will incrementally convert machines to new API,
by dropping memory_region_allocate_system_memory() and setting
default_ram_id that board used to use before conversion to keep
migration stream the same.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20200219160953.13771-4-imammedo@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/hw/boards.h | 8 | ||||
| -rw-r--r-- | include/sysemu/hostmem.h | 16 |
2 files changed, 24 insertions, 0 deletions
diff --git a/include/hw/boards.h b/include/hw/boards.h index 7b4b6b79d7..8e536cafb2 100644 --- a/include/hw/boards.h +++ b/include/hw/boards.h @@ -170,6 +170,13 @@ typedef struct { * false is returned, an error must be set to show the reason of * the rejection. If the hook is not provided, all hotplug will be * allowed. + * @default_ram_id: + * Specifies inital RAM MemoryRegion name to be used for default backend + * creation if user explicitly hasn't specified backend with "memory-backend" + * property. + * It also will be used as a way to optin into "-m" option support. + * If it's not set by board, '-m' will be ignored and generic code will + * not create default RAM MemoryRegion. */ struct MachineClass { /*< private >*/ @@ -226,6 +233,7 @@ struct MachineClass { bool nvdimm_supported; bool numa_mem_supported; bool auto_enable_numa; + const char *default_ram_id; HotplugHandler *(*get_hotplug_handler)(MachineState *machine, DeviceState *dev); diff --git a/include/sysemu/hostmem.h b/include/sysemu/hostmem.h index 4dbdadd39e..5db0d668ec 100644 --- a/include/sysemu/hostmem.h +++ b/include/sysemu/hostmem.h @@ -27,6 +27,22 @@ #define MEMORY_BACKEND_CLASS(klass) \ OBJECT_CLASS_CHECK(HostMemoryBackendClass, (klass), TYPE_MEMORY_BACKEND) +/* hostmem-ram.c */ +/** + * @TYPE_MEMORY_BACKEND_RAM: + * name of backend that uses mmap on the anonymous RAM + */ + +#define TYPE_MEMORY_BACKEND_RAM "memory-backend-ram" + +/* hostmem-file.c */ +/** + * @TYPE_MEMORY_BACKEND_FILE: + * name of backend that uses mmap on a file descriptor + */ +#define TYPE_MEMORY_BACKEND_FILE "memory-backend-file" + +typedef struct HostMemoryBackend HostMemoryBackend; typedef struct HostMemoryBackendClass HostMemoryBackendClass; /** |