linux-kernel - [PATCH v2 1/7] vduse: add v1 API definition

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250916130833.329087-2-eperezma@redhat.com>
Date: Tue, 16 Sep 2025 15:08:27 +0200
From: Eugenio Pérez <eperezma@...hat.com>
To: "Michael S . Tsirkin " <mst@...hat.com>
Cc: Stefano Garzarella <sgarzare@...hat.com>,
	jasowang@...hat.com,
	Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
	linux-kernel@...r.kernel.org,
	Maxime Coquelin <mcoqueli@...hat.com>,
	Yongji Xie <xieyongji@...edance.com>,
	Cindy Lu <lulu@...hat.com>,
	Laurent Vivier <lvivier@...hat.com>,
	virtualization@...ts.linux.dev,
	Eugenio Pérez <eperezma@...hat.com>
Subject: [PATCH 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 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.
-- 
2.51.0