[GIT PULL] AMD IOMMU updates for 2.6.28-rc5

[Ingo Molnar]

* Joerg Roedel <joerg.roedel at amd.com> wrote:

> (sorry for resend, forgot to add the mailing lists)
> 
> Hi Ingo,
> 
> 
> The following changes since commit 4e14e833ac3b97a4aa8803eea49f899adc5bb5f4:
>   Linus Torvalds (1):
>         Merge git://git.kernel.org/.../sfrench/cifs-2.6
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu.git iommu-fixes-2.6.28
> 
> Joerg Roedel (4):
>       AMD IOMMU: add parameter to disable device isolation
>       AMD IOMMU: enable device isolation per default
>       AMD IOMMU: fix fullflush comparison length
>       AMD IOMMU: check for next_bit also in unmapped area
> 
>  Documentation/kernel-parameters.txt |    4 +++-
>  arch/x86/kernel/amd_iommu.c         |    2 +-
>  arch/x86/kernel/amd_iommu_init.c    |    6 ++++--
>  3 files changed, 8 insertions(+), 4 deletions(-)
> 
> As the most important change these patches enable device isolation 
> per default. Tests have shown that there are drivers which have bugs 
> and do double-freeing of DMA memory. This can lead to data 
> corruption with a hardware IOMMU when multiple devices share the 
> same protection domain. Therefore device isolation should be enabled 
> by default. The full diff of these changes is appended. Please pull.

pulled into tip/x86/urgent, thanks Joerg!

	Ingo