Messages in this thread | | | Subject | Re: [PATCH] Fix mmap_kmem (was: [question] What's the difference between /dev/kmem and /dev/mem) | From | Andi Kleen <> | Date | 12 Aug 2005 18:54:49 +0200 |
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Linus Torvalds <torvalds@osdl.org> writes: > > I'm actually more inclined to try to deprecate /dev/kmem.. I don't think > anybody has ever really used it except for some rootkits.
I don't think that's true.
> So I'd be perfectly happy to fix this, but I'd be even happier if we made > the whole kmem thing a config variable (maybe even default it to "off").
Acessing vmalloc in /dev/mem would be pretty awkward. Yes it doesn't also work in mmap of /dev/kmem, but at least in read/write. There are quite a lot of scripts that use it for kernel debugging like dumping variables. And for that you really want to access modules and vmalloc. And it's much easier to parse than /proc/kcore
In fact I have some patches queued to fix it for x86-64 again (people who used such scripts on i386 are complaining)
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