diff options
| author | Marcel Apfelbaum <marcel@redhat.com> | 2017-12-13 16:37:37 +0200 |
|---|---|---|
| committer | Marcel Apfelbaum <marcel@redhat.com> | 2018-02-19 13:03:24 +0200 |
| commit | 06329ccecfa022494fdba288b3ab5bcb8dff4159 (patch) | |
| tree | 6ac05bd91e27d422a5e7d4e1804d626f17216e8e /include/exec/ram_addr.h | |
| parent | e5ecc287a7bd24a1364e23e263cb60cfc8d21eb5 (diff) | |
mem: add share parameter to memory-backend-ram
Currently only file backed memory backend can
be created with a "share" flag in order to allow
sharing guest RAM with other processes in the host.
Add the "share" flag also to RAM Memory Backend
in order to allow remapping parts of the guest RAM
to different host virtual addresses. This is needed
by the RDMA devices in order to remap non-contiguous
QEMU virtual addresses to a contiguous virtual address range.
Moved the "share" flag to the Host Memory base class,
modified phys_mem_alloc to include the new parameter
and a new interface memory_region_init_ram_shared_nomigrate.
There are no functional changes if the new flag is not used.
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
Diffstat (limited to 'include/exec/ram_addr.h')
| -rw-r--r-- | include/exec/ram_addr.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/exec/ram_addr.h b/include/exec/ram_addr.h index 7633ef6342..cf2446a176 100644 --- a/include/exec/ram_addr.h +++ b/include/exec/ram_addr.h @@ -80,7 +80,8 @@ RAMBlock *qemu_ram_alloc_from_fd(ram_addr_t size, MemoryRegion *mr, Error **errp); RAMBlock *qemu_ram_alloc_from_ptr(ram_addr_t size, void *host, MemoryRegion *mr, Error **errp); -RAMBlock *qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr, Error **errp); +RAMBlock *qemu_ram_alloc(ram_addr_t size, bool share, MemoryRegion *mr, + Error **errp); RAMBlock *qemu_ram_alloc_resizeable(ram_addr_t size, ram_addr_t max_size, void (*resized)(const char*, uint64_t length, |