Commit 3d7b0e41 authored Jun 30, 2009 by David Woodhouse

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>

parent 1bf20f0d

drivers/pci/intel-iommu.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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(