Messages in this thread | | | From | Jesse Barnes <> | Subject | Re: pci-sysfs resource mmap broken (and PATCH) | Date | Fri, 29 Apr 2005 22:16:27 +0000 (UTC) |
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David S. Miller <davem <at> davemloft.net> writes: > The only problem could me getting the generic mmap() code to > properly pass the flag down into the driver, I seem to recall > that it either does an -EINVAL or masks out any flags which > are not in the standard set.
But it would be a relatively clean solution, if a bit arch specific (i.e. some arches would allow MAP_WRITECOMBINE or somesuch, while others have different sorts of batching attributes).
> But then again this conflicts with what I remember seeing in the > XFree86 PCI support, in that IA64 passed in such a mmap() flag > to indicate a framebuffer like mapping that didn't need a guard-like > bit to be set.
It used an ioctl last time I looked.
Jesse
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