diff options
| author | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2018-03-12 17:20:58 +0000 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2018-03-20 05:03:27 +0200 |
| commit | 2ce16640b4cc9ab9e7e6bde9e4264b102e0eb73d (patch) | |
| tree | d35a0ed702eaf057ffbd886db9c54d911ee2dd76 /include | |
| parent | f90bb71bfdaca6ece1696e194aad11fb8599ffba (diff) | |
postcopy: use UFFDIO_ZEROPAGE only when available
Use a flag on the RAMBlock to state whether it has the
UFFDIO_ZEROPAGE capability, use it when it's available.
This allows the use of postcopy on tmpfs as well as hugepage
backed files.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/exec/cpu-common.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/exec/cpu-common.h b/include/exec/cpu-common.h index 0d861a6289..24d335f95d 100644 --- a/include/exec/cpu-common.h +++ b/include/exec/cpu-common.h @@ -73,6 +73,9 @@ void qemu_ram_set_idstr(RAMBlock *block, const char *name, DeviceState *dev); void qemu_ram_unset_idstr(RAMBlock *block); const char *qemu_ram_get_idstr(RAMBlock *rb); bool qemu_ram_is_shared(RAMBlock *rb); +bool qemu_ram_is_uf_zeroable(RAMBlock *rb); +void qemu_ram_set_uf_zeroable(RAMBlock *rb); + size_t qemu_ram_pagesize(RAMBlock *block); size_t qemu_ram_pagesize_largest(void); |