qemu-e2k/subprojects
Hanna Czenczek d4eb503808 vhost-user: Fix protocol feature bit conflict
The VHOST_USER_PROTOCOL_F_XEN_MMAP feature bit was defined in
f21e95ee97, which has been part of qemu's 8.1.0 release.  However, it
seems it was never added to qemu's code, but it is well possible that it
is already used by different front-ends outside of qemu (i.e., Xen).

VHOST_USER_PROTOCOL_F_SHARED_OBJECT in contrast was added to qemu's code
in 1609476662, but never defined in the vhost-user specification.  As a
consequence, both bits were defined to be 17, which cannot work.

Regardless of whether actual code or the specification should take
precedence, F_XEN_MMAP is already part of a qemu release, while
F_SHARED_OBJECT is not.  Therefore, bump the latter to take number 18
instead of 17, and add this to the specification.

Take the opportunity to add at least a little note on the
VhostUserShared structure to the specification.  This structure is
referenced by the new commands introduced in 1609476662, but was not
defined.

Fixes: 1609476662
       ("vhost-user: add shared_object msg")
Signed-off-by: Hanna Czenczek <hreitz@redhat.com>
Message-Id: <20231016083201.23736-1-hreitz@redhat.com>
Reviewed-by: Emmanouil Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2023-10-22 05:18:17 -04:00
..
libvduse libvduse: Fix compiler warning with -Wshadow=local 2023-10-12 14:09:58 +02:00
libvhost-user vhost-user: Fix protocol feature bit conflict 2023-10-22 05:18:17 -04:00
packagefiles meson: subprojects: replace berkeley-{soft,test}float-3 with wraps 2023-06-06 16:30:01 +02:00
.gitignore meson: subprojects: replace berkeley-{soft,test}float-3 with wraps 2023-06-06 16:30:01 +02:00
berkeley-softfloat-3.wrap subprojects: Use the correct .git suffix in the repository URLs 2023-09-21 11:31:18 +03:00
berkeley-testfloat-3.wrap subprojects: Use the correct .git suffix in the repository URLs 2023-09-21 11:31:18 +03:00
dtc.wrap meson: subprojects: replace submodules with wrap files 2023-06-06 16:30:01 +02:00
keycodemapdb.wrap meson: subprojects: replace submodules with wrap files 2023-06-06 16:30:01 +02:00
libblkio.wrap subprojects: add wrap file for libblkio 2023-09-07 13:32:37 +02:00
libvfio-user.wrap meson: subprojects: replace submodules with wrap files 2023-06-06 16:30:01 +02:00
slirp.wrap subprojects: Use the correct .git suffix in the repository URLs 2023-09-21 11:31:18 +03:00