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Subject[PATCH 04/19] AMD IOMMU: make dma_ops_free_pagetable generic
Date
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 <joerg.roedel@amd.com>
---
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 f3dd4cd..bec34fd 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -584,12 +584,12 @@ 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;
@@ -610,6 +610,8 @@ static void dma_ops_free_pagetable(struct dma_ops_domain *dma_dom)
}

free_page((unsigned long)p1);
+
+ domain->pt_root = NULL;
}

/*
@@ -621,7 +623,7 @@ 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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