Gitweb: http://git.kernel.org/linus/3d7b0e4154b4963d6bd39991ec8eaa09caeb3994
Commit: 3d7b0e4154b4963d6bd39991ec8eaa09caeb3994
Parent: 1bf20f0dc5629032ddd07617139d9fbca66c1642
Author: David Woodhouse <David.Woodhouse@intel.com>
AuthorDate: Tue Jun 30 03:38:09 2009 +0100
Committer: David Woodhouse <David.Woodhouse@intel.com>
CommitDate: Tue Jun 30 03:57:38 2009 +0100
intel-iommu: Don't free too much in dma_pte_free_pagetable()
The loop condition was wrong -- we should free a PMD only if its
_entire_ range is within the range we're intending to clear. The
early-termination condition was right, but not the loop.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
---
drivers/pci/intel-iommu.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index 40ce5a0..35bdd2a 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -815,7 +815,7 @@ static void dma_pte_free_pagetable(struct dmar_domain *domain,
if (tmp + level_size(level) - 1 > last_pfn)
return;
- while (tmp <= last_pfn) {
+ while (tmp + level_size(level) - 1 <= last_pfn) {
pte = dma_pfn_level_pte(domain, tmp, level);
if (pte) {
free_pgtable_page(
--
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