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authorJagannathan Raman <jag.raman@oracle.com>2021-01-29 11:46:04 -0500
committerStefan Hajnoczi <stefanha@redhat.com>2021-02-09 20:53:56 +0000
commit44a4ff31c01082ffce08ec3b9a87a4fdf15919d5 (patch)
tree12d221ae0ba47bf3a853248b3b42bae208a07c6b /hw
parent639090d85057e7e8251e2509fa136f1a2384f131 (diff)
memory: alloc RAM from file at offset
Allow RAM MemoryRegion to be created from an offset in a file, instead of allocating at offset of 0 by default. This is needed to synchronize RAM between QEMU & remote process. Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 609996697ad8617e3b01df38accc5c208c24d74e.1611938319.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'hw')
-rw-r--r--hw/misc/ivshmem.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/hw/misc/ivshmem.c b/hw/misc/ivshmem.c
index 0505b52c98..603e992a7f 100644
--- a/hw/misc/ivshmem.c
+++ b/hw/misc/ivshmem.c
@@ -495,7 +495,8 @@ static void process_msg_shmem(IVShmemState *s, int fd, Error **errp)
/* mmap the region and map into the BAR2 */
memory_region_init_ram_from_fd(&s->server_bar2, OBJECT(s),
- "ivshmem.bar2", size, true, fd, &local_err);
+ "ivshmem.bar2", size, true, fd, 0,
+ &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;