linux-kernel - [PATCH] vfio-mdev: reinstate VFIO

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Message-ID: <20240912141956.237734-1-jon@nutanix.com>
Date: Thu, 12 Sep 2024 07:19:55 -0700
From: Jon Kohler <jon@...anix.com>
To: Kirti Wankhede <kwankhede@...dia.com>,
        Alex Williamson <alex.williamson@...hat.com>,
        Jason Gunthorpe <jgg@...pe.ca>, Tony Krowiak <akrowiak@...ux.ibm.com>,
        kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Jon Kohler <jon@...anix.com>, Christoph Hellwig <hch@....de>,
        Jason Gunthorpe <jgg@...dia.com>, Rohit Shenoy <rshenoy@...dia.com>,
        Tarun Gupta <targupta@...dia.com>
Subject: [PATCH] vfio-mdev: reinstate VFIO_MDEV Kconfig

Reinstate Kconfig setup for CONFIG_VFIO_MDEV to help support out of
tree drivers that use VFIO_MDEV library (e.g. Nvidia GPU drivers).

Fixes: 8bf8c5ee1f38 ("vfio-mdev: turn VFIO_MDEV into a selectable symbol")
Signed-off-by: Jon Kohler <jon@...anix.com>
Cc: Alex Williamson <alex.williamson@...hat.com>
Cc: Christoph Hellwig <hch@....de>
Cc: Jason Gunthorpe <jgg@...dia.com>
Cc: Rohit Shenoy <rshenoy@...dia.com>
Cc: Tarun Gupta <targupta@...dia.com>
Cc: Tony Krowiak <akrowiak@...ux.ibm.com>
---
 drivers/vfio/mdev/Kconfig | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/vfio/mdev/Kconfig b/drivers/vfio/mdev/Kconfig
index e5fb84e07965..b5e1eb634e62 100644
--- a/drivers/vfio/mdev/Kconfig
+++ b/drivers/vfio/mdev/Kconfig
@@ -1,4 +1,10 @@
 # SPDX-License-Identifier: GPL-2.0-only
 
 config VFIO_MDEV
-	tristate
+	tristate "Mediated device driver framework"
+	default n
+	help
+	  Provides a framework to virtualize devices.
+	  See Documentation/driver-api/vfio-mediated-device.rst for more details.
+
+	  If you don't know what do here, say N.
\ No newline at end of file
-- 
2.43.0