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-rw-r--r--docs/specs/vhost-user.txt7
1 files changed, 4 insertions, 3 deletions
diff --git a/docs/specs/vhost-user.txt b/docs/specs/vhost-user.txt
index 2641390244..6abb6977ff 100644
--- a/docs/specs/vhost-user.txt
+++ b/docs/specs/vhost-user.txt
@@ -78,13 +78,14 @@ Depending on the request type, payload can be:
Padding: 32-bit
A region is:
- ---------------------------------------
- | guest address | size | user address |
- ---------------------------------------
+ -----------------------------------------------------
+ | guest address | size | user address | mmap offset |
+ -----------------------------------------------------
Guest address: a 64-bit guest address of the region
Size: a 64-bit size
User address: a 64-bit user address
+ mmmap offset: 64-bit offset where region starts in the mapped memory
In QEMU the vhost-user message is implemented with the following struct: