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x86/vt-d: Fix comment for dma_pte_free_pagetable() 

dma_pte_free_pagetable no longer depends on last level ptes
being clear, it clears them itself.  Fix up the comment to
match.

Cc: Jiang Liu <jiang.liu@linux.intel.com>
Suggested-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Michael S. Tsirkin 2016-03-23 20:34:19 +02:00 committed by Joerg Roedel
parent a0fe14d7dc
commit 3d1a2442d2
1 changed files with 1 additions and 1 deletions
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drivers/iommu/intel-iommu.c
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@ -1143,7 +1143,7 @@ static void dma_pte_free_level(struct dmar_domain *domain, int level,
} while (!first_pte_in_page(++pte) && pfn <= last_pfn);
}
/* free page table pages. last level pte should already be cleared */
/* clear last level (leaf) ptes and free page table pages. */
static void dma_pte_free_pagetable(struct dmar_domain *domain,
unsigned long start_pfn,
unsigned long last_pfn)