Re: [PATCH 0/13] maps: pagemap, kpagemap, and related cleanups

Ananth N Mavinakayanahalli wrote:

On Fri, Apr 13, 2007 at 12:50:20PM +1000, Nick Piggin wrote:

It definitely seems like you can use some kernel functions, but the
ones I saw may just be systemtap facilities. But what is so surprising
about being able to call a kernel function when running in kernel
context? Perhaps there is some fundamental limitation of kprobes that
I don't understand.

The main requirement for kprobes handlers is that they can't sleep. You
could definitely call a kernel function from kprobe handlers as long as
the function doesn't sleep.

That would be enough to access basically all the VM data structures.

--
SUSE Labs, Novell Inc.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

---

• References:
  • Re: [PATCH 0/13] maps: pagemap, kpagemap, and related cleanups
    • From: Andrew Morton <[email protected]>
  • Re: [PATCH 0/13] maps: pagemap, kpagemap, and related cleanups
    • From: Nick Piggin <[email protected]>
  • Re: [PATCH 0/13] maps: pagemap, kpagemap, and related cleanups
    • From: Andrew Morton <[email protected]>
  • Re: [PATCH 0/13] maps: pagemap, kpagemap, and related cleanups
    • From: Nick Piggin <[email protected]>
  • Re: [PATCH 0/13] maps: pagemap, kpagemap, and related cleanups
    • From: Andrew Morton <[email protected]>
  • Re: [PATCH 0/13] maps: pagemap, kpagemap, and related cleanups
    • From: Nick Piggin <[email protected]>
  • Re: [PATCH 0/13] maps: pagemap, kpagemap, and related cleanups
    • From: Andrew Morton <[email protected]>
  • Re: [PATCH 0/13] maps: pagemap, kpagemap, and related cleanups
    • From: Nick Piggin <[email protected]>
  • Re: [PATCH 0/13] maps: pagemap, kpagemap, and related cleanups
    • From: Andrew Morton <[email protected]>
  • Re: [PATCH 0/13] maps: pagemap, kpagemap, and related cleanups
    • From: Nick Piggin <[email protected]>
  • Re: [PATCH 0/13] maps: pagemap, kpagemap, and related cleanups
    • From: Ananth N Mavinakayanahalli <[email protected]>

• Prev by Date: Re: PROBLEM: kernel BUG at mm/rmap.c:522!
• Next by Date: [2.6.20.4] BUG: dentry xattrs still in use in shrink_dcache_for_umount() with reiserfs
• Previous by thread: Re: [PATCH 0/13] maps: pagemap, kpagemap, and related cleanups
• Next by thread: Re: [PATCH 0/13] maps: pagemap, kpagemap, and related cleanups
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]