Improved fault handling for AMD-IOMMU (AMD-Vi)

Hi,

this series of patches implements improved fault handling in the AMD-IOMMU
(AMD-Vi) driver. The debug output is more verbose for some errors. With these
patches the driver also tries to recover from IOMMU command handling errors
instead of just do a panic.

Joerg

Diffstat:

 arch/x86/include/asm/amd_iommu_types.h |    6 ++
 arch/x86/kernel/amd_iommu.c            |  109 ++++++++++++++++++++++++++------
 arch/x86/kernel/amd_iommu_init.c       |   20 +++++--
 3 files changed, 111 insertions(+), 24 deletions(-)

Shortlog:

Joerg Roedel (8):
      x86/amd-iommu: Dump fault entry on DTE error
      x86/amd-iommu: Dump illegal command on ILLEGAL_COMMAND_ERROR
      x86/amd-iommu: Introduce function for iommu-local domain flush
      x86/amd-iommu: Add function to flush all DTEs on one IOMMU
      x86/amd-iommu: Add reset function for command buffers
      x86/amd-iommu: Reset command buffer on ILLEGAL_COMMAND_ERROR
      x86/amd-iommu: Panic if IOMMU command buffer reset fails
      x86/amd-iommu: Reset command buffer if wait loop fails


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