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Update vmeta to use the dma_buf handling now provided by libbmm v2.
This permits more flexible buffer management, as the buffers can now
be passed via a standardized mechanism to other subsystems (such as
DRM), and image data to be encoded can be accepted directly from
other subsystems without needing to be copied.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
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The kernel folk don't like the uio ioctl idea, so we can't use uio for
this driver. Instead, switch it to be a self-contained miscdevice.
This adds support to this library for the miscdevice interface.
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Move the user id management into the kernel driver. This removes the
necessity to export operations on kernel semaphores to userspace, along
with the kernel shared memory.
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