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Tsirkin " Cc: Stefano Garzarella , virtualization@lists.linux.dev, Xuan Zhuo , Maxime Coquelin , Laurent Vivier , Yongji Xie , Cindy Lu , linux-kernel@vger.kernel.org, =?UTF-8?q?Eugenio=20P=C3=A9rez?= , jasowang@redhat.com Subject: [PATCH v13 02/13] vduse: add v1 API definition Date: Fri, 16 Jan 2026 12:42:20 +0100 Message-ID: <20260116114231.1474306-3-eperezma@redhat.com> In-Reply-To: <20260116114231.1474306-1-eperezma@redhat.com> References: <20260116114231.1474306-1-eperezma@redhat.com> Precedence: bulk X-Mailing-List: virtualization@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 This allows the kernel to detect whether the userspace VDUSE device supports the VQ group and ASID features. VDUSE devices that don't set the V1 API will not receive the new messages, and vdpa device will be created with only one vq group and asid. The next patches implement the new feature incrementally, only enabling the VDUSE device to set the V1 API version by the end of the series. Acked-by: Jason Wang Reviewed-by: Xie Yongji Signed-off-by: Eugenio Pérez --- include/uapi/linux/vduse.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/uapi/linux/vduse.h b/include/uapi/linux/vduse.h index 10ad71aa00d6..ccb92a1efce0 100644 --- a/include/uapi/linux/vduse.h +++ b/include/uapi/linux/vduse.h @@ -10,6 +10,10 @@ #define VDUSE_API_VERSION 0 +/* VQ groups and ASID support */ + +#define VDUSE_API_VERSION_1 1 + /* * Get the version of VDUSE API that kernel supported (VDUSE_API_VERSION). * This is used for future extension. -- 2.52.0