Messages in this thread | | | Date | Sun, 23 Mar 1997 00:13:29 -0800 | From | Rakesh Dubey <> | Subject | Mapping non-prefetchable memory |
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Hi,
I have some questions about mapping PCI device memory in Linux 2.0.x. My device requires that the memory be mapped non-prefetchable (i.e. non-cached). I am using the vremap(phyAddr, size) to get the virtual address but is this memory cached or non-cached? There does not seem to be any options to control this.
Also, just to confirm this, in 2.0.x world kmalloc() returns contiguous, same phy as virt, locked, non-cached memory -- right?
I know this will change in 2.1.X but I am debugging my driver now and don't want to move to 2.1.x at this time.
Thanks.
-Rakesh
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