On Sat, Mar 29, 2008 at 03:20:31AM -0400, Robert P. J. Day wrote: > following up on a short article i just read, where is /dev/kmem > these days? was it actually deleted? back in 2005, jon corbet was > certainly hinting at this: > > http://lwn.net/Articles/147901/ > > and i don't see it today on my system, and i don't see a kernel config > option for it either, but i also don't see an explicit removal of that > feature in "git log" and log entries as recent as january of last year > still talk about it. > > so where's it at? if anywhere. thanks. erik@arthur:~ > ls -l /dev/kmem crw-r----- 1 root kmem 1, 2 2008-03-29 23:39 /dev/kmem Udev created it for me, so there should be kernel support. I can even read from it: root@arthur:/tmp # dd bs=4k count=1 skip=786688 if=/dev/kmem of=kmem 1+0 records in 1+0 records out 4096 bytes (4.1 kB) copied, 0.000272952 seconds, 15.0 MB/s 786688 * 4096 = 3222274048 = 0xc0100000, which according to the System.map is startup_32. Erik -- Erik Mouw -- mouw@xxxxxxxxxxxx
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