From: Michael S. Tsirkin <mst@redhat.com>
Date: Wed, 23 Mar 2016 18:34:19 +0000 (+0200)
Subject: x86/vt-d: Fix comment for dma_pte_free_pagetable()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3d1a2442d2c08c872150db7a554647c06f6e864f;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

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>
---

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index a2e1b7f14df2..01005531891b 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -1143,7 +1143,7 @@ next:
 	} 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)