[PATCH 04/21] AMD IOMMU: make dma_ops_free_pagetable generic

[Joerg Roedel]

Impact: change code to free pagetables from protection domains

The dma_ops_free_pagetable function can only free pagetables from
dma_ops domains. Change that to free pagetables of pure protection
domains.

Signed-off-by: Joerg Roedel <[EMAIL PROTECTED]>
---
 arch/x86/kernel/amd_iommu.c |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index e96a2f3..85a62e9 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -585,12 +585,12 @@ static void dma_ops_reserve_addresses(struct 
dma_ops_domain *dom,
        iommu_area_reserve(dom->bitmap, start_page, pages);
 }
 
-static void dma_ops_free_pagetable(struct dma_ops_domain *dma_dom)
+static void free_pagetable(struct protection_domain *domain)
 {
        int i, j;
        u64 *p1, *p2, *p3;
 
-       p1 = dma_dom->domain.pt_root;
+       p1 = domain->pt_root;
 
        if (!p1)
                return;
@@ -611,6 +611,8 @@ static void dma_ops_free_pagetable(struct dma_ops_domain 
*dma_dom)
        }
 
        free_page((unsigned long)p1);
+
+       domain->pt_root = NULL;
 }
 
 /*
@@ -622,7 +624,7 @@ static void dma_ops_domain_free(struct dma_ops_domain *dom)
        if (!dom)
                return;
 
-       dma_ops_free_pagetable(dom);
+       free_pagetable(&dom->domain);
 
        kfree(dom->pte_pages);
 
-- 
1.5.6.4


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