X11 still uses /dev/mem ?

Adam Jackson ajax at nwnk.net
Wed Feb 17 07:43:14 PST 2010

On Tue, 2010-02-16 at 10:30 +0200, Nameer Yarkon wrote:
> Hi,
> Does X11 still uses /dev/mem to directly manipulate the physical memory ?

strace would tell you.  The answer is "it depends" though.  On Linux,
most memory access goes through the PCI BAR resource files in sysfs, but
there are some situations where we still have to use /dev/mem.

- ajax
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