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vfio/mdev: Remove CONFIG_VFIO_MDEV_DEVICE

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For some reason the vfio_mdev shim mdev_driver has its own module and
kconfig. As the next patch requires access to it from mdev.ko merge the
two modules together and remove VFIO_MDEV_DEVICE.

A later patch deletes this driver entirely.

Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com>
Link: https://lore.kernel.org/r/20210617142218.1877096-7-hch@lst.de
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Jason Gunthorpe 2021-06-17 16:22:14 +02:00 committed by Alex Williamson
parent 0d9f837c69
commit af3ab3f9b9
9 changed files with 23 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
Documentation/s390/vfio-ap.rst
View File

@ -514,7 +514,6 @@ These are the steps:
* S390_AP_IOMMU
* VFIO
* VFIO_MDEV
* VFIO_MDEV_DEVICE
* KVM
If using make menuconfig select the following to build the vfio_ap module::

2
arch/s390/Kconfig
View File

@ -768,7 +768,7 @@ config VFIO_CCW
config VFIO_AP
def_tristate n
prompt "VFIO support for AP devices"
depends on S390_AP_IOMMU && VFIO_MDEV_DEVICE && KVM
depends on S390_AP_IOMMU && VFIO_MDEV && KVM
depends on ZCRYPT
help
This driver grants access to Adjunct Processor (AP) devices

2
drivers/gpu/drm/i915/Kconfig
View File

@ -124,7 +124,7 @@ config DRM_I915_GVT_KVMGT
tristate "Enable KVM/VFIO support for Intel GVT-g"
depends on DRM_I915_GVT
depends on KVM
depends on VFIO_MDEV && VFIO_MDEV_DEVICE
depends on VFIO_MDEV
default n
help
Choose this option if you want to enable KVMGT support for

7
drivers/vfio/mdev/Kconfig
View File

@ -9,10 +9,3 @@ config VFIO_MDEV
See Documentation/driver-api/vfio-mediated-device.rst for more details.
If you don't know what do here, say N.
config VFIO_MDEV_DEVICE
tristate "VFIO driver for Mediated devices"
depends on VFIO && VFIO_MDEV
default n
help
VFIO based driver for Mediated devices.

3
drivers/vfio/mdev/Makefile
View File

@ -1,6 +1,5 @@
# SPDX-License-Identifier: GPL-2.0-only
mdev-y := mdev_core.o mdev_sysfs.o mdev_driver.o
mdev-y := mdev_core.o mdev_sysfs.o mdev_driver.o vfio_mdev.o
obj-$(CONFIG_VFIO_MDEV) += mdev.o
obj-$(CONFIG_VFIO_MDEV_DEVICE) += vfio_mdev.o

16
drivers/vfio/mdev/mdev_core.c
View File

@ -360,11 +360,24 @@ int mdev_device_remove(struct mdev_device *mdev)
static int __init mdev_init(void)
{
return mdev_bus_register();
int rc;
rc = mdev_bus_register();
if (rc)
return rc;
rc = mdev_register_driver(&vfio_mdev_driver);
if (rc)
goto err_bus;
return 0;
err_bus:
mdev_bus_unregister();
return rc;
}
static void __exit mdev_exit(void)
{
mdev_unregister_driver(&vfio_mdev_driver);
if (mdev_bus_compat_class)
class_compat_unregister(mdev_bus_compat_class);
@ -378,4 +391,3 @@ MODULE_VERSION(DRIVER_VERSION);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_SOFTDEP("post: vfio_mdev");

2
drivers/vfio/mdev/mdev_private.h
View File

@ -37,6 +37,8 @@ struct mdev_type {
#define to_mdev_type(_kobj) \
container_of(_kobj, struct mdev_type, kobj)
extern struct mdev_driver vfio_mdev_driver;
int parent_create_sysfs_files(struct mdev_parent *parent);
void parent_remove_sysfs_files(struct mdev_parent *parent);

24
drivers/vfio/mdev/vfio_mdev.c
View File

@ -17,10 +17,6 @@
#include "mdev_private.h"
#define DRIVER_VERSION "0.1"
#define DRIVER_AUTHOR "NVIDIA Corporation"
#define DRIVER_DESC "VFIO based driver for Mediated device"
static int vfio_mdev_open(struct vfio_device *core_vdev)
{
struct mdev_device *mdev = to_mdev_device(core_vdev->dev);
@ -151,7 +147,7 @@ static void vfio_mdev_remove(struct mdev_device *mdev)
kfree(vdev);
}
static struct mdev_driver vfio_mdev_driver = {
struct mdev_driver vfio_mdev_driver = {
.driver = {
.name = "vfio_mdev",
.owner = THIS_MODULE,
@ -160,21 +156,3 @@ static struct mdev_driver vfio_mdev_driver = {
.probe = vfio_mdev_probe,
.remove = vfio_mdev_remove,
};
static int __init vfio_mdev_init(void)
{
return mdev_register_driver(&vfio_mdev_driver);
}
static void __exit vfio_mdev_exit(void)
{
mdev_unregister_driver(&vfio_mdev_driver);
}
module_init(vfio_mdev_init)
module_exit(vfio_mdev_exit)
MODULE_VERSION(DRIVER_VERSION);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);

6
samples/Kconfig
View File

@ -154,14 +154,14 @@ config SAMPLE_UHID
config SAMPLE_VFIO_MDEV_MTTY
tristate "Build VFIO mtty example mediated device sample code -- loadable modules only"
depends on VFIO_MDEV_DEVICE && m
depends on VFIO_MDEV && m
help
Build a virtual tty sample driver for use as a VFIO
mediated device
config SAMPLE_VFIO_MDEV_MDPY
tristate "Build VFIO mdpy example mediated device sample code -- loadable modules only"
depends on VFIO_MDEV_DEVICE && m
depends on VFIO_MDEV && m
help
Build a virtual display sample driver for use as a VFIO
mediated device. It is a simple framebuffer and supports
@ -178,7 +178,7 @@ config SAMPLE_VFIO_MDEV_MDPY_FB
config SAMPLE_VFIO_MDEV_MBOCHS
tristate "Build VFIO mdpy example mediated device sample code -- loadable modules only"
depends on VFIO_MDEV_DEVICE && m
depends on VFIO_MDEV && m
select DMA_SHARED_BUFFER
help
Build a virtual display sample driver for use as a VFIO