Hey, here are a couple of patches to fix the fall-out from the patch set fixing the kdump faults with VT-d enabled. A few important issues have been fixed: * Moved sleeping functions out of atomic sections, mainly iremap_cache/iounmap. * Mark domain ids used in the old kernel as reserved in the kdump kernel, so that any new domains don't interfere with domains from the old kernel * Mark all IRT entries from the old kernel as reservered in the new kernel, so that we don't overwrite an entry which might still be in use by a device * Only try to load anything from the old kernel when we are in a kdump kernel. If we find the iommu hardware enabled and we are not in a kdump kernel, just disable the iommu and proceed with initialization. * Fix a compile error Besides that I also cleaned up the code to simplify it: * Move necessary initialization steps before the root entry table and the irq remapping table is programmed into hardware. This makes sure QI is initialized so that we can flush the iommu caches when hardware got the new tables. * Make the new root entry table and irq remapping table visible to hardware immediatly after they are created and loaded with the data from the old kernel. This allows to remove the code to update both, the old and the new version of the table at the same time. * Clean up log messages from the VT-d driver to have a common prefix that can be grepped for. * Remove unused code The changes have been tested by me an Baoquan He. I'll plan to put them into the x86/vt-d branch for v4.2. Regards, Joerg Joerg Roedel (17): iommu/vt-d: Fix compile error when CONFIG_INTEL_IOMMU=n iommu/vt-d: Remove __iommu_save_to_oldmem() function iommu/vt-d: Make two functions static iommu/vt-d: Load old data structures only in kdump kernel iommu/vt-d: Mark root-entry present in set_root_entry iommu/vt-d: Rework loading of old root-entry table iommu/vt-d: Copy context-tables outside of spin_lock iommu/vt-d: Don't reuse domain-ids from old kernel iommu/vt-d: Clean up log messages in intel-iommu.c iommu/vt-d: Allocate irq remapping table bitmap with GFP_KERNEL iommu/vt-d: Move QI initialization to intel_setup_irq_remapping iommu/vt-d: Move EIM detection to intel_prepare_irq_remapping iommu/vt-d: Split up iommu_set_irq_remapping iommu/vt-d: Move kdump pointer intialization to __iommu_load_old_irte iommu/vt-d: Mark irt entries from old kernel as allocated iommu/vt-d: Copy old irte in intel_setup_irq_remapping iommu/vt-d: Remove update code for old ir-table drivers/iommu/dmar.c | 26 +- drivers/iommu/intel-iommu.c | 463 ++++++++++++++---------------------- drivers/iommu/intel_irq_remapping.c | 263 +++++++++----------- include/linux/intel-iommu.h | 17 +- 4 files changed, 299 insertions(+), 470 deletions(-) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
