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| author | Li, Zhen-Hua <zhen-hual@hp.com> | 2013-03-06 10:43:17 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-03-06 09:41:51 +0100 |
| commit | 4ecccd9edd5eb4dd185486e6e593c671484691bc (patch) | |
| tree | 2226b57b328e4a8bede6167665e6eab1121c343f | |
| parent | 576cfb404c9cab728e9462ea713f3422679d5cf7 (diff) | |
| download | lwn-4ecccd9edd5eb4dd185486e6e593c671484691bc.tar.gz lwn-4ecccd9edd5eb4dd185486e6e593c671484691bc.zip | |
iommu, x86: Add DMA remap fault reason
The number of DMA fault reasons in intel's document are from 1
to 0xD, but in dmar.c fault reason 0xD is not printed out.
In this document:
"Intel Virtualization Technology for Directed I/O Architecture Specification"
http://download.intel.com/technology/computing/vptech/Intel(r)_VT_for_Direct_IO.pdf
Chapter 4. Support For Device-IOTLBs
Table 6. Unsuccessful Translated Requests
There is fault reason for 0xD not listed in kernel:
Present context-entry used to process translation request
specifies blocking of Translation Requests (Translation Type (T)
field value not equal to 01b).
This patch adds reason 0xD as well.
Signed-off-by: Li, Zhen-Hua <zhen-hual@hp.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Donald Dutile <ddutile@redhat.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Hannes Reinecke <hare@suse.de>
Link: http://lkml.kernel.org/r/1362537797-6034-1-git-send-email-zhen-hual@hp.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
| -rw-r--r-- | drivers/iommu/dmar.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c index dc7e478b7e5f..e5cdaf87822c 100644 --- a/drivers/iommu/dmar.c +++ b/drivers/iommu/dmar.c @@ -1083,6 +1083,7 @@ static const char *dma_remap_fault_reasons[] = "non-zero reserved fields in RTP", "non-zero reserved fields in CTP", "non-zero reserved fields in PTE", + "PCE for translation request specifies blocking", }; static const char *irq_remap_fault_reasons[] = |