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Commit a6d41a40 authored by Joerg Roedel's avatar Joerg Roedel
Browse files

x86/amd-iommu: Use fetch_pte in amd_iommu_iova_to_phys 



Don't reimplement the page table walker in this function.
Use the generic one.

Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
parent 38a76eee

arch/x86/kernel/amd_iommu.c

+2 −14
Original line number Diff line number Diff line
@@ -2140,21 +2140,9 @@ static phys_addr_t amd_iommu_iova_to_phys(struct iommu_domain *dom, 
	phys_addr_t paddr;

	u64 *pte;



	pte = &domain->pt_root[IOMMU_PTE_L2_INDEX(iova)];

	pte = fetch_pte(domain, iova);



	if (!IOMMU_PTE_PRESENT(*pte))

		return 0;



	pte = IOMMU_PTE_PAGE(*pte);

	pte = &pte[IOMMU_PTE_L1_INDEX(iova)];



	if (!IOMMU_PTE_PRESENT(*pte))

		return 0;



	pte = IOMMU_PTE_PAGE(*pte);

	pte = &pte[IOMMU_PTE_L0_INDEX(iova)];



	if (!IOMMU_PTE_PRESENT(*pte))

	if (!pte || !IOMMU_PTE_PRESENT(*pte))

		return 0;



	paddr  = *pte & IOMMU_PAGE_MASK;