Re: memory mapped devices

On Nov 7, 7:02 am, Keep Asking <as...@xxxxxxxxx> wrote:
My question is how linux deals with memory cache .
When we have a memory mapped device, for example, at address
0x????????
The only thing I need to do to get the virtual adress is
ioremap(0x????????), then we can access the device just like normal
memory. If I look the ioremap(0 some case it's just as simple as to
add a offset. Then question is what mechanism makes memory cache
disabled for this range of memory?

Thanks,

use "ioremap_nocache()".
Cheers
Janaka
.

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