Hi, These are RFC patches. They're intended to add fault callback support so IOMMU users can debug or react when a fault happens. IOMMU faults might be very difficult to reproduce and then to figure out the source of the problem. Currently IOMMU driver prints not so useful debug message and does not notice user about such issue. With a fault callback, IOMMU user may debug much more useful information and/or react to go back to a valid state or, in worse cases, to leave device in a state where it's still possible to use it and proceed with some investigation.
Comments are welcome. Br, David --- David Cohen (3): OMAP: IOMMU: Add generic IOMMU errors code OMAP2+: IOMMU: change OMAP2+ error message to dev_dbg() OMAP: IOMMU: add support to callback during fault handling arch/arm/mach-omap2/iommu2.c | 23 ++++++++++++++--- arch/arm/plat-omap/include/plat/iommu.h | 15 ++++++++++- arch/arm/plat-omap/iommu.c | 41 ++++++++++++++++++++++++++++--- 3 files changed, 70 insertions(+), 9 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
