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  1. 19 Apr, 2009 3 commits
    • Matias Zabaljauregui's avatar
      lguest: fix crash on vmlinux images · 88df781a
      Matias Zabaljauregui authored 
      Typical message: 'lguest: unhandled trap 6 at 0x418726 (0x0)'

vmlinux guests were broken by 4cd8b5e2
'lguest: use KVM hypercalls', which rewrites guest text from kvm hypercalls
to trap 31.

The Launcher mmaps the kernel image.  The Guest executes and
immediately faults in the first text page (read-only).  Then it hits a
hypercall, and we rewrite that hypercall, causing a copy-on-write.
But the Guest pagetables still refer to the old page: we fault again,
but as Host we see the hypercall already rewritten, and pass the fault
back to the Guest.  The Guest hasn't set up an IDT yet, so we kill it.

This doesn't happen with bzImages: they unpack themselves and so the
text pages are already read-write.
Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
Tested-by: default avatarPatrick McHardy <kaber@trash.net>
      88df781a
    • Linus Torvalds's avatar
      Remove 'recurse into child resources' logic from 'reserve_region_with_split()' · ff54250a
      Linus Torvalds authored 
      This function is not actually used right now, since the original use
case for it was done with insert_resource_expand_to_fit() instead.

However, we now have another usage case that wants to basically do a
"reserve IO resource, splitting around existing resources", however that
one doesn't actually want the "recurse into the conflicting resource"
logic at all.

And since recursing into the conflicting resource was the most complex
part, and isn't wanted, just remove it.  Maybe we'll some day want both
versions, but we can just resurrect the logic then.
Tested-by: default avatarYinghai Lu <yinghai@kernel.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      ff54250a
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6 · 8d4ab5da
      Linus Torvalds authored 
      * git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  cifs: when renaming don't try to unlink negative dentry
  cifs: remove unneeded bcc_ptr update in CIFSTCon
  cifs: add cFYI messages with some of the saved strings from ssetup/tcon
  cifs: fix buffer size for tcon->nativeFileSystem field
  cifs: fix unicode string area word alignment in session setup
  [CIFS] Fix build break caused by change to new current_umask helper function
  [CIFS] Fix sparse warnings
  [CIFS] Add support for posix open during lookup
  cifs: no need to use rcu_assign_pointer on immutable keys
  cifs: remove dnotify thread code
  [CIFS] remove some build warnings
  cifs: vary timeout on writes past EOF based on offset (try #5)
  [CIFS] Fix build break from recent DFS patch when DFS support not enabled
  Remote DFS root support.
  [CIFS] Endian convert UniqueId when reporting inode numbers from server files
  cifs: remove some pointless conditionals before kfree()
  cifs: flush data on any setattr
      8d4ab5da
  3. 18 Apr, 2009 10 commits
  5. 17 Apr, 2009 27 commits
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