Re: Getting physical addresses of mmap'd pages from userspace

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Tom Cooksey wrote:
> Yup, I think that's what I'm going to end up having to do. Even if I can get
> the physical address, I need some way to flush the CPU cache to RAM before I
> ask the GPU to blit. I doubt there's any way to do that from userspace. :-( I'm
> not even sure of the kernel API to do it. Any ideas?

MIPS has it: http://www.linux-mips.org/wiki/Cacheflush_Syscall
and so does SH. I'm afraid I don't know about ARM though.

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Daniel Thompson (STMicroelectronics) <daniel.thompson@xxxxxx>
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