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From 3a44f7aaad8dd8ce1c2c5b75a30326df1f043f22 Mon Sep 17 00:00:00 2001
From: David Stevens <stevensd@chromium.org>
Date: Thu, 13 Oct 2022 10:37:47 +0900
Subject: [PATCH 3/3] vhost-user: add protocol flag for shmem
Add a vhost protocol feature flag for shared memory region support. This
is necessary to avoid sending the GET_SHARED_MEMORY_REGIONS message to
backends which don't support it.
BUG=b:252901073
TEST=crosvm device wl
Change-Id: I044926e982526c3c76063b5386cab0db72524707
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/3951472
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Commit-Queue: David Stevens <stevensd@chromium.org>
(cherry-picked from commit 60aa43629ae9be2cc3df37c648ab7e0e5ff2172c)
Signed-off-by: Alyssa Ross <hi@alyssa.is>
---
crates/vhost/src/vhost_user/message.rs | 2 ++
1 file changed, 2 insertions(+)
diff --git a/crates/vhost/src/vhost_user/message.rs b/crates/vhost/src/vhost_user/message.rs
index be24992..5fb2fb8 100644
--- a/crates/vhost/src/vhost_user/message.rs
+++ b/crates/vhost/src/vhost_user/message.rs
@@ -435,6 +435,8 @@ bitflags! {
const STATUS = 0x0001_0000;
/// Support Xen mmap.
const XEN_MMAP = 0x0002_0000;
+ /// Support shared memory regions.
+ const SHARED_MEMORY_REGIONS = 0x0002_0000;
}
}
--
2.42.0
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