| Message ID | 20220405153323.2082242-7-stefanha@redhat.com |
|---|---|
| State | New |
| Headers | show |
| Series | blkio: add libblkio BlockDriver | expand |
diff --git a/stubs/memory.c b/stubs/memory.c new file mode 100644 index 0000000000..e9ec4e384b --- /dev/null +++ b/stubs/memory.c @@ -0,0 +1,13 @@ +#include "qemu/osdep.h" +#include "exec/memory.h" + +MemoryRegion *memory_region_from_host(void *host, ram_addr_t *offset) +{ + return NULL; +} + +int memory_region_get_fd(MemoryRegion *mr) +{ + return -1; +} + diff --git a/stubs/meson.build b/stubs/meson.build index 6f80fec761..1e274d2db2 100644 --- a/stubs/meson.build +++ b/stubs/meson.build @@ -25,6 +25,7 @@ stub_ss.add(files('is-daemonized.c')) if libaio.found() stub_ss.add(files('linux-aio.c')) endif +stub_ss.add(files('memory.c')) stub_ss.add(files('migr-blocker.c')) stub_ss.add(files('module-opts.c')) stub_ss.add(files('monitor.c'))
The blkio block driver will need to look up the file descriptor for a given pointer. This is possible in softmmu builds where the memory API is available for querying guest RAM. Add stubs so tools like qemu-img that link the block layer still build successfully. In this case there is no guest RAM but that is fine. Bounce buffers and their file descriptors will be allocated with libblkio's blkio_alloc_mem_region() so we won't rely on QEMU's memory_region_get_fd() in that case. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> --- stubs/memory.c | 13 +++++++++++++ stubs/meson.build | 1 + 2 files changed, 14 insertions(+) create mode 100644 stubs/memory.c