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| author | Paolo Bonzini <pbonzini@redhat.com> | 2014-06-10 19:15:23 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2014-06-19 18:44:20 +0300 |
| commit | a35ba7be4b696d4c7b47318fd2022e6c3eca0a63 (patch) | |
| tree | f206d1f7d758c159e96724fb066c8c6c3d38c57b /memory.c | |
| parent | 605d0a945d020e3024aa7faf8a0e8b471371d8ff (diff) | |
| download | focaccia-qemu-a35ba7be4b696d4c7b47318fd2022e6c3eca0a63.tar.gz focaccia-qemu-a35ba7be4b696d4c7b47318fd2022e6c3eca0a63.zip | |
hostmem: allow preallocation of any memory region
And allow preallocation of file-based memory even without -mem-prealloc. Some care is necessary because -mem-prealloc does not allow disabling preallocation for hostmem-file. 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>
Diffstat (limited to 'memory.c')
| -rw-r--r-- | memory.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/memory.c b/memory.c index 5ef7167848..e7f1160f4e 100644 --- a/memory.c +++ b/memory.c @@ -1271,6 +1271,17 @@ void memory_region_reset_dirty(MemoryRegion *mr, hwaddr addr, cpu_physical_memory_reset_dirty(mr->ram_addr + addr, size, client); } +int memory_region_get_fd(MemoryRegion *mr) +{ + if (mr->alias) { + return memory_region_get_fd(mr->alias); + } + + assert(mr->terminates); + + return qemu_get_ram_fd(mr->ram_addr & TARGET_PAGE_MASK); +} + void *memory_region_get_ram_ptr(MemoryRegion *mr) { if (mr->alias) { |