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| author | Arnd Bergmann <arnd@arndb.de> | 2021-04-22 15:35:33 +0200 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2021-04-27 13:36:54 -0600 |
| commit | adaeb718d46f6b42a3fc1dffd4f946f26b33779a (patch) | |
| tree | a0373c1c8fc15be3bbf59af07174ca0cf0e61d69 /drivers | |
| parent | 43dcf6ccf8953a868dfd194ff2fad279eb55883e (diff) | |
| download | linux-adaeb718d46f6b42a3fc1dffd4f946f26b33779a.tar.gz linux-adaeb718d46f6b42a3fc1dffd4f946f26b33779a.tar.bz2 linux-adaeb718d46f6b42a3fc1dffd4f946f26b33779a.zip | |
vfio/gvt: fix DRM_I915_GVT dependency on VFIO_MDEV
The Kconfig dependency is incomplete since DRM_I915_GVT is a 'bool'
symbol that depends on the 'tristate' VFIO_MDEV. This allows a
configuration with VFIO_MDEV=m, DRM_I915_GVT=y and DRM_I915=y that
causes a link failure:
x86_64-linux-ld: drivers/gpu/drm/i915/gvt/gvt.o: in function `available_instances_show':
gvt.c:(.text+0x67a): undefined reference to `mtype_get_parent_dev'
x86_64-linux-ld: gvt.c:(.text+0x6a5): undefined reference to `mtype_get_type_group_id'
x86_64-linux-ld: drivers/gpu/drm/i915/gvt/gvt.o: in function `description_show':
gvt.c:(.text+0x76e): undefined reference to `mtype_get_parent_dev'
x86_64-linux-ld: gvt.c:(.text+0x799): undefined reference to `mtype_get_type_group_id'
Clarify the dependency by specifically disallowing the broken
configuration. If VFIO_MDEV is built-in, it will work, but if
VFIO_MDEV=m, the i915 driver cannot be built-in here.
Fixes: 07e543f4f9d1 ("vfio/gvt: Make DRM_I915_GVT depend on VFIO_MDEV")
Fixes: 9169cff168ff ("vfio/mdev: Correct the function signatures for the mdev_type_attributes")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Message-Id: <20210422133547.1861063-1-arnd@kernel.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/Kconfig | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig index 483e9ff8ca1d..369695df8b15 100644 --- a/drivers/gpu/drm/i915/Kconfig +++ b/drivers/gpu/drm/i915/Kconfig @@ -101,7 +101,7 @@ config DRM_I915_GVT bool "Enable Intel GVT-g graphics virtualization host support" depends on DRM_I915 depends on 64BIT - depends on VFIO_MDEV + depends on VFIO_MDEV=y || VFIO_MDEV=DRM_I915 default n help Choose this option if you want to enable Intel GVT-g graphics |