tunnels: fix netns vs proto registration ordering

[safe/jmp/linux-2.6] / Documentation / Intel-IOMMU.txt

diff --git a/Documentation/Intel-IOMMU.txt b/Documentation/Intel-IOMMU.txt
index cbb4dba..cf9431d 100644 (file)
--- a/Documentation/Intel-IOMMU.txt
+++ b/Documentation/Intel-IOMMU.txt
@@ -48,7 +48,7 @@ IOVA generation is pretty generic. We used the same technique as vmalloc()
 but these are not global address spaces, but separate for each domain.
 Different DMA engines may support different number of domains.
 
-We also allocate gaurd pages with each mapping, so we can attempt to catch
+We also allocate guard pages with each mapping, so we can attempt to catch
 any overflow that might happen.
 
 
@@ -56,6 +56,7 @@ Graphics Problems?
 ------------------
 If you encounter issues with graphics devices, you can try adding
 option intel_iommu=igfx_off to turn off the integrated graphics engine.
+If this fixes anything, please ensure you file a bug reporting the problem.
 
 Some exceptions to IOVA
 -----------------------
@@ -63,6 +64,15 @@ Interrupt ranges are not address translated, (0xfee00000 - 0xfeefffff).
 The same is true for peer to peer transactions. Hence we reserve the
 address from PCI MMIO ranges so they are not allocated for IOVA addresses.
 
+
+Fault reporting
+---------------
+When errors are reported, the DMA engine signals via an interrupt. The fault
+reason and device that caused it with fault reason is printed on console.
+
+See below for sample.
+
+
 Boot Message Sample
 -------------------
 
@@ -85,9 +95,17 @@ When DMAR is enabled for use, you will notice..
 
 PCI-DMA: Using DMAR IOMMU
 
+Fault reporting
+---------------
+
+DMAR:[DMA Write] Request device [00:02.0] fault addr 6df084000
+DMAR:[fault reason 05] PTE Write access is not set
+DMAR:[DMA Write] Request device [00:02.0] fault addr 6df084000
+DMAR:[fault reason 05] PTE Write access is not set
+
 TBD
 ----
 
 - For compatibility testing, could use unity map domain for all devices, just
   provide a 1-1 for all useful memory under a single domain for all devices.
-- API for paravirt ops for abstracting functionlity for VMM folks.
+- API for paravirt ops for abstracting functionality for VMM folks.