Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/agpgart

* master.kernel.org:/pub/scm/linux/kernel/git/davej/agpgart:
  [AGPGART] drivers/char/agp/sgi-agp.c: check kmalloc() return value
  [AGPGART] Fix PCI-posting flush typo.
  [AGPGART] fix detection of aperture size versus GTT size on G965
  [AGPGART] Remove unnecessary flushes when inserting and removing pages.
  [AGPGART] K8M890 support for amd-k8.