linux-kernel - [PATCH 1/2] vfio/amba: Mark for removal

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Message-ID: <20250825175807.3264083-2-alex.williamson@redhat.com>
Date: Mon, 25 Aug 2025 11:58:00 -0600
From: Alex Williamson <alex.williamson@...hat.com>
To: alex.williamson@...hat.com,
	kvm@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
	eric.auger@...hat.com,
	smostafa@...gle.com,
	praan@...gle.com
Subject: [PATCH 1/2] vfio/amba: Mark for removal

vfio-amba has only been touched to keep up with the rest of the code
base for the past 10 years.  We have no basis to believe that it's
currently tested or used.  Mark it for deprecation.

Signed-off-by: Alex Williamson <alex.williamson@...hat.com>
---
 drivers/vfio/platform/Kconfig     | 5 ++++-
 drivers/vfio/platform/vfio_amba.c | 2 ++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/vfio/platform/Kconfig b/drivers/vfio/platform/Kconfig
index 88fcde51f024..c6be29b2c24b 100644
--- a/drivers/vfio/platform/Kconfig
+++ b/drivers/vfio/platform/Kconfig
@@ -17,10 +17,13 @@ config VFIO_PLATFORM
 	  If you don't know what to do here, say N.
 
 config VFIO_AMBA
-	tristate "VFIO support for AMBA devices"
+	tristate "VFIO support for AMBA devices (DEPRECATED)"
 	depends on ARM_AMBA || COMPILE_TEST
 	select VFIO_PLATFORM_BASE
 	help
+	  The vfio-amba driver is deprecated and will be removed in a
+	  future kernel release.
+
 	  Support for ARM AMBA devices with VFIO. This is required to make
 	  use of ARM AMBA devices present on the system using the VFIO
 	  framework.
diff --git a/drivers/vfio/platform/vfio_amba.c b/drivers/vfio/platform/vfio_amba.c
index ff8ff8480968..9f5c527baa8a 100644
--- a/drivers/vfio/platform/vfio_amba.c
+++ b/drivers/vfio/platform/vfio_amba.c
@@ -70,6 +70,8 @@ static int vfio_amba_probe(struct amba_device *adev, const struct amba_id *id)
 	struct vfio_platform_device *vdev;
 	int ret;
 
+	dev_err_once(&adev->dev, "DEPRECATION: vfio-amba is deprecated and will be removed in a future kernel release\n");
+
 	vdev = vfio_alloc_device(vfio_platform_device, vdev, &adev->dev,
 				 &vfio_amba_ops);
 	if (IS_ERR(vdev))
-- 
2.50.1