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    Subject[PATCH v6 0/4] drm: Use full allocated minor range for DRM
    Date
    64 DRM device nodes is not enough for everyone.
    Upgrade it to ~512K (which definitely is more than enough).

    To allow testing userspace support for >64 devices, add additional DRM
    modparam (force_extended_minors) which causes DRM to skip allocating minors
    in 0-192 range.
    Additionally - convert minors to use XArray instead of IDR to simplify the
    locking.

    v1 -> v2:
    Don't touch DRM_MINOR_CONTROL and its range (Simon Ser)

    v2 -> v3:
    Don't use legacy scheme for >=192 minor range (Dave Airlie)
    Add modparam for testing (Dave Airlie)
    Add lockdep annotation for IDR (Daniel Vetter)

    v3 -> v4:
    Convert from IDR to XArray (Matthew Wilcox)

    v4 -> v5:
    Fixup IDR to XArray conversion (Matthew Wilcox)

    v5 -> v6:
    Also convert Accel to XArray
    Rename skip_legacy_minors to force_extended_minors

    Michał Winiarski (4):
    drm: Use XArray instead of IDR for minors
    accel: Use XArray instead of IDR for minors
    drm: Expand max DRM device number to full MINORBITS
    drm: Introduce force_extended_minors modparam

    drivers/accel/drm_accel.c | 110 +++------------------------------
    drivers/gpu/drm/drm_drv.c | 105 ++++++++++++++++---------------
    drivers/gpu/drm/drm_file.c | 2 +-
    drivers/gpu/drm/drm_internal.h | 4 --
    include/drm/drm_accel.h | 18 +-----
    include/drm/drm_file.h | 5 ++
    6 files changed, 69 insertions(+), 175 deletions(-)

    --
    2.41.0

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