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Message-ID: <20250807115752.1663383-2-eperezma@redhat.com> Date: Thu, 7 Aug 2025 13:57:46 +0200 From: Eugenio Pérez <eperezma@...hat.com> To: "Michael S . Tsirkin " <mst@...hat.com> Cc: Cindy Lu <lulu@...hat.com>, Eugenio Pérez <eperezma@...hat.com>, Yongji Xie <xieyongji@...edance.com>, Stefano Garzarella <sgarzare@...hat.com>, virtualization@...ts.linux.dev, Laurent Vivier <lvivier@...hat.com>, linux-kernel@...r.kernel.org, Xuan Zhuo <xuanzhuo@...ux.alibaba.com>, jasowang@...hat.com, Maxime Coquelin <mcoqueli@...hat.com> Subject: [RFC v2 1/7] vduse: add v1 API definition 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. Signed-off-by: Eugenio Pérez <eperezma@...hat.com> --- 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 68a627d04afa..9a56d0416bfe 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. -- 2.50.1
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