linux-kernel - [PATCH RFC v4 3/5] virtio: pack config changed flags

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: <ae1546541834abe3296c6341f6dd02a73a49f29a.1751534711.git.mst@redhat.com>
Date: Thu, 3 Jul 2025 05:26:32 -0400
From: "Michael S. Tsirkin" <mst@...hat.com>
To: linux-kernel@...r.kernel.org
Cc: Lukas Wunner <lukas@...ner.de>, Keith Busch <kbusch@...nel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Parav Pandit <parav@...dia.com>, virtualization@...ts.linux.dev,
	stefanha@...hat.com, alok.a.tiwari@...cle.com,
	Jason Wang <jasowang@...hat.com>,
	Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
	Eugenio Pérez <eperezma@...hat.com>
Subject: [PATCH RFC v4 3/5] virtio: pack config changed flags

In anticipation of adding more, use bit-fields instead of bool.

Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
---
 include/linux/virtio.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/linux/virtio.h b/include/linux/virtio.h
index 64cb4b04be7a..be0beb16b487 100644
--- a/include/linux/virtio.h
+++ b/include/linux/virtio.h
@@ -149,9 +149,9 @@ struct virtio_admin_cmd {
 struct virtio_device {
 	int index;
 	bool failed;
-	bool config_core_enabled;
-	bool config_driver_disabled;
-	bool config_change_pending;
+	u8 config_core_enabled:1;
+	u8 config_driver_disabled:1;
+	u8 config_change_pending:1;
 	spinlock_t config_lock;
 	spinlock_t vqs_list_lock;
 	struct device dev;
-- 
MST