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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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961e3beae3
Job submission currently relies on the fact that struct drm_tegra_reloc and struct host1x_reloc are the same size and uses a simple call to the copy_from_user() function to copy them to kernel space. This causes the handle to be stored in the buffer object field, which then needs a cast to a 32 bit integer to resolve it to a proper buffer object pointer and store it back in the buffer object field. On 64-bit architectures that will no longer work, since pointers are 64 bits wide whereas handles will remain 32 bits. This causes the sizes of both structures to because different and copying will no longer work. Fix this by adding a new function, host1x_reloc_get_user(), that copies the structures field by field. While at it, use substructures for the command and target buffers in struct host1x_reloc for better readability. Also use unsized types to make it more obvious that this isn't part of userspace ABI. Signed-off-by: Thierry Reding <treding@nvidia.com> |
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| .. | ||
| hw | ||
| bus.c | ||
| bus.h | ||
| cdma.c | ||
| cdma.h | ||
| channel.c | ||
| channel.h | ||
| debug.c | ||
| debug.h | ||
| dev.c | ||
| dev.h | ||
| intr.c | ||
| intr.h | ||
| job.c | ||
| job.h | ||
| Kconfig | ||
| Makefile | ||
| mipi.c | ||
| syncpt.c | ||
| syncpt.h | ||