On Wednesday, 14 February 2024 19:57:23 CST Randy Dunlap wrote:

Hi,

On 2/14/24 15:36, Elizabeth Figura wrote:

quoted

ntsync uses a misc device as the simplest and least intrusive uAPI interface.

Each file description on the device represents an isolated NT instance, intended
to correspond to a single NT virtual machine.

Signed-off-by: Elizabeth Figura <zfigura@codeweavers.com>
---
 drivers/misc/Kconfig  |  9 ++++++++
 drivers/misc/Makefile |  1 +
 drivers/misc/ntsync.c | 52 +++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 62 insertions(+)
 create mode 100644 drivers/misc/ntsync.c

diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 4fb291f0bf7c..bdd8a71bd853 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig

@@ -504,6 +504,15 @@ config OPEN_DICE
 	  measured boot flow. Userspace can use CDIs for remote attestation
 	  and sealing.
 
+config NTSYNC
+	tristate "NT synchronization primitive emulation"
+	help
+	  This module provides kernel support for emulation of Windows NT
+	  synchronization primitives. It is not a hardware driver.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ntsync.
+
 	  If unsure, say N.

It looks like the "If unsure" line belongs to the OPEN_DICE kconfig entry
above here. If you want one for NTSYNC, please add one.

Oops, looks like that was a bad rebase :-(

quoted

 
 config VCPU_STALL_DETECTOR

quoted

diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
new file mode 100644
index 000000000000..e4969ef90722
--- /dev/null
+++ b/drivers/misc/ntsync.c

@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ntsync.c - Kernel driver for NT synchronization primitives
+ *
+ * Copyright (C) 2024 Elizabeth Figura

It would be nice to have your email address above...

quoted

+ */
+

quoted

+
+MODULE_AUTHOR("Elizabeth Figura");

but at least please add it in MODULE_AUTHOR(). Yes it's optional, but
roughly 7900 of 10400 entries do include it (according to my rough
grepping).

Yes, I know that it's in MAINTAINERS.

Will add, thanks. As you guessed I did just pick an arbitrary module to copy.