Messages in this thread |  | | | Date | Mon, 6 Oct 2008 14:48:35 +0100 | | From | Alan Cox <> | | Subject | Re: RFC: banning device driver reserved resources from /dev/mem |
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> I think the proper solution is to make /dev/mem pure diagnostic tool. > Drivers should use /sys mappings of pci devices to access their iomem
Only a tiny fraction of devices in the world are PCI, and those platforms where you most what /dev/mem type debugging tools are often those without PCI
> , or even better they should not touch pci mappings > directly at all, but talk to kernel, and if xorg needs access > to video memory it should talk to drm and get its mapping from there.
Most video cards don't use DRM, but the kernel does have the same video memory mapped for text consoles.
Alan
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