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SubjectRe: [PATCH v3 0/3] Improve vfio-pci primary GPU assignment behavior
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Hi,

this patchset has meanwhile reached drm-next and should go into Linux v5.20.


https://cgit.freedesktop.org/drm/drm/commit/?id=d173780620792c725506b0f3c5ec52c7fbac1db0

Best regards
Thomas

Am 22.06.22 um 16:01 schrieb Thomas Zimmermann:
> (I'm taking over this patchset from Alex, [1] as we agreed that it should
> go through the drm-misc tree.)
>
> When assigning a primary graphics device to VM through vfio-pci device
> assignment, users often prevent binding of the native PCI graphics
> driver to avoid device initialization conflicts, however firmware
> console drivers may still be attached to the device which can often be
> cumbersome to manually unbind or exclude via cmdline options.
>
> This series proposes to move the DRM aperture helpers out to
> drivers/video/ to make it more accessible to drivers like vfio-pci,
> which have neither dependencies on DRM code nor a struct drm_driver
> to present to existing interfaces. vfio-pci can then trivially call
> into the aperture helpers to remove conflicting drivers, rather than
> open coding it ourselves as was proposed with a new symbol export in
> v1 of this series. [2]
>
> v3:
> * add aperture_ prefix to all interfaces (Javier)
> * improved documentation (Javier)
> * update MAINTAINERS [3] and add aperture helpers
>
> [1] https://lore.kernel.org/all/165541020563.1955826.16350888595945658159.stgit@omen/
> [2] https://lore.kernel.org/all/165453797543.3592816.6381793341352595461.stgit@omen/
> [3] https://lore.kernel.org/all/20220518183006.14548-2-tzimmermann@suse.de/
>
> Alex Williamson (1):
> vfio/pci: Remove console drivers
>
> Thomas Zimmermann (2):
> MAINTAINERS: Broaden scope of simpledrm entry
> drm: Implement DRM aperture helpers under video/
>
> Documentation/driver-api/aperture.rst | 13 +
> Documentation/driver-api/index.rst | 1 +
> MAINTAINERS | 6 +-
> drivers/gpu/drm/drm_aperture.c | 178 +------------
> drivers/gpu/drm/tiny/Kconfig | 1 +
> drivers/vfio/pci/vfio_pci_core.c | 5 +
> drivers/video/Kconfig | 6 +
> drivers/video/Makefile | 2 +
> drivers/video/aperture.c | 351 ++++++++++++++++++++++++++
> drivers/video/console/Kconfig | 1 +
> drivers/video/fbdev/Kconfig | 7 +-
> include/linux/aperture.h | 56 ++++
> 12 files changed, 456 insertions(+), 171 deletions(-)
> create mode 100644 Documentation/driver-api/aperture.rst
> create mode 100644 drivers/video/aperture.c
> create mode 100644 include/linux/aperture.h
>
>
> base-commit: 7025c1f111b7a057243de45bd56c14b906242a53

--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev
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