Messages in this thread Patch in this message |  | | From | Joerg Roedel <> | Subject | [PATCH 05/17] iommu/vt-d: Mark root-entry present in set_root_entry | Date | Fri, 5 Jun 2015 16:10:51 +0200 |
| |
From: Joerg Roedel <jroedel@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 <bhe@redhat.com> Signed-off-by: Joerg Roedel <jroedel@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
|  |