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memory, exec: switch file ram allocation functions to 'flags' parameters

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As more flag parameters besides the existing 'share' are going to be
added to following functions
memory_region_init_ram_from_file
qemu_ram_alloc_from_fd
qemu_ram_alloc_from_file
let's switch them to use the 'flags' parameters so as to ease future
flag additions.

The existing 'share' flag is converted to the RAM_SHARED bit in ram_flags,
and other flag bits are ignored by above functions right now.

Signed-off-by: Junyan He <junyan.he@intel.com>
Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Junyan He 2018-07-18 15:47:58 +08:00 • committed by Michael S. Tsirkin
parent b0e5de9381
commit cbfc017103
6 changed files with 41 additions and 14 deletions
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7
include/exec/memory.h
View file

@ -640,6 +640,7 @@ void memory_region_init_resizeable_ram(MemoryRegion *mr,
void *host),
Error **errp);
#ifdef __linux__
/**
* memory_region_init_ram_from_file: Initialize RAM memory region with a
* mmap-ed backend.
@ -651,7 +652,9 @@ void memory_region_init_resizeable_ram(MemoryRegion *mr,
* @size: size of the region.
* @align: alignment of the region base address; if 0, the default alignment
* (getpagesize()) will be used.
* @share: %true if memory must be mmaped with the MAP_SHARED flag
* @ram_flags: Memory region features:
* - RAM_SHARED: memory must be mmaped with the MAP_SHARED flag
* Other bits are ignored now.
* @path: the path in which to allocate the RAM.
* @errp: pointer to Error*, to store an error if it happens.
*
@ -663,7 +666,7 @@ void memory_region_init_ram_from_file(MemoryRegion *mr,
const char *name,
uint64_t size,
uint64_t align,
bool share,
uint32_t ram_flags,
const char *path,
Error **errp);