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memory: move mem_path handling to memory_region_allocate_system_memory

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Like the previous patch did in exec.c, split memory_region_init_ram and
memory_region_init_ram_from_file, and push mem_path one step further up.
Other RAM regions than system memory will now be backed by regular RAM.

Also, boards that do not use memory_region_allocate_system_memory will
not support -mem-path anymore.  This can be changed before the patches
are merged by migrating boards to use the function.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Paolo Bonzini 2014-05-14 17:43:19 +08:00 • committed by Michael S. Tsirkin
parent 7febe36f9a
commit 0b183fc871
4 changed files with 46 additions and 14 deletions
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18
include/exec/memory.h
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@ -311,6 +311,24 @@ void memory_region_init_ram(MemoryRegion *mr,
const char *name,
uint64_t size);
#ifdef __linux__
/**
* memory_region_init_ram_from_file: Initialize RAM memory region with a
* mmap-ed backend.
*
* @mr: the #MemoryRegion to be initialized.
* @owner: the object that tracks the region's reference count
* @name: the name of the region.
* @size: size of the region.
* @path: the path in which to allocate the RAM.
*/
void memory_region_init_ram_from_file(MemoryRegion *mr,
struct Object *owner,
const char *name,
uint64_t size,
const char *path);
#endif
/**
* memory_region_init_ram_ptr: Initialize RAM memory region from a
* user-provided pointer. Accesses into the