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authorJoerg Roedel <jroedel@suse.de>2015-06-12 15:00:21 +0200
committerJoerg Roedel <jroedel@suse.de>2015-06-16 10:59:36 +0200
commitaf3b358e48115588d905cc07a47b3f356e0d01d1 (patch)
tree4e43bcfc0e952052a7a8ff97ade492692fce02d6 /include/linux/intel-iommu.h
parentd4d1c0f3d6a9558fe3857853afdf2f93e1679c03 (diff)
iommu/vt-d: Copy IR table from old kernel when in kdump mode
When we are booting into a kdump kernel and find IR enabled, copy over the contents of the previous IR table so that spurious interrupts will not be target aborted. Tested-by: ZhenHua Li <zhen-hual@hp.com> Tested-by: Baoquan He <bhe@redhat.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'include/linux/intel-iommu.h')
-rw-r--r--include/linux/intel-iommu.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index b85b81ad5eba..9e14edcf7f6e 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -296,6 +296,7 @@ struct q_inval {
/* 1MB - maximum possible interrupt remapping table size */
#define INTR_REMAP_PAGE_ORDER 8
#define INTR_REMAP_TABLE_REG_SIZE 0xf
+#define INTR_REMAP_TABLE_REG_SIZE_MASK 0xf
#define INTR_REMAP_TABLE_ENTRIES 65536