On 22/02/2021 17.10, Stefan Hajnoczi wrote:
For some reason memfd never used share=on. vhost-user relies on
mmap(MAP_SHARED) so this seems like a problem, but the tests still run
without it.

Add share=on for consistency and to prevent future bugs in the test.

Signed-off-by: Stefan Hajnoczi <stefa...@redhat.com>
---
  tests/qtest/vhost-user-test.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/qtest/vhost-user-test.c b/tests/qtest/vhost-user-test.c
index 1a5f5313ff..2db98c4920 100644
--- a/tests/qtest/vhost-user-test.c
+++ b/tests/qtest/vhost-user-test.c
@@ -40,7 +40,7 @@
  #define QEMU_CMD_MEM    " -m %d -object memory-backend-file,id=mem,size=%dM," 
\
                          "mem-path=%s,share=on -numa node,memdev=mem"
  #define QEMU_CMD_MEMFD  " -m %d -object 
memory-backend-memfd,id=mem,size=%dM," \
-                        " -numa node,memdev=mem"
+                        "share=on -numa node,memdev=mem"

Even if it's not required, it seems to be a good clean up, also with regards to the lonely comma at the end of the previous line.

Acked-by: Thomas Huth <th...@redhat.com>

I assume this will go through the vhost tree, or do you want me to take this single patch through my qtest tree?


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