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Jon Smirl wrote: > On 5/23/06, Jeff Garzik <jeff@garzik.org> wrote: >> OTOH, I think a perfect video driver would be in kernel space, and do >>>> * delivery of GPU commands from userspace to hardware, hopefully via >> zero-copy DMA. For older cards without a true instruction set, "GPU >> commands" simply means userspace prepares hardware register >> read/write/test commands, and blasts the sequence to hardware at the >> appropriate moment (a la S3 Savage's BCI). > > You have to security check those commands in the kernel driver to keep > normal users from using the GPU to do nasty things. Users can only > play with memory that they own and no ones else's. Obviously. Jeff - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||
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