From: Joerg Roedel <jroe...@suse.de>
When we do no memcpy from the old to the new kernel for the
root entry table, we have to set the present bit ourself.
Tested-by: Baoquan He <b...@redhat.com>
Signed-off-by: Joerg Roedel <jroe...@suse.de>
---
drivers/iommu/intel-iommu.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index d66bec6..cda0901 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -198,8 +198,7 @@ static inline bool root_present(struct root_entry *root)
static inline void set_root_value(struct root_entry *root, unsigned long value)
{
- root->lo &= ~VTD_PAGE_MASK;
- root->lo |= value & VTD_PAGE_MASK;
+ root->lo = (value & VTD_PAGE_MASK) | 1;
}
static inline struct context_entry *
--
1.9.1
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