From: Joerg Roedel <joerg.roedel@amd.com>
To: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org
Cc: Joerg Roedel <joerg.roedel@amd.com>
Subject: [PATCH 11/14] x86/amd-iommu: Use 2-level page tables for dma_ops domains
Date: Fri, 4 Sep 2009 11:40:49 +0200 [thread overview]
Message-ID: <1252057252-32074-12-git-send-email-joerg.roedel@amd.com> (raw)
In-Reply-To: <1252057252-32074-1-git-send-email-joerg.roedel@amd.com>
The driver now supports a dynamic number of levels for IO
page tables. This allows to reduce the number of levels for
dma_ops domains by one because a dma_ops domain has usually
an address space size between 128MB and 4G.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
arch/x86/kernel/amd_iommu.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 6ffb3e6..addf658 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -1010,7 +1010,7 @@ static struct dma_ops_domain *dma_ops_domain_alloc(struct amd_iommu *iommu)
dma_dom->domain.id = domain_id_alloc();
if (dma_dom->domain.id == 0)
goto free_dma_dom;
- dma_dom->domain.mode = PAGE_MODE_3_LEVEL;
+ dma_dom->domain.mode = PAGE_MODE_2_LEVEL;
dma_dom->domain.pt_root = (void *)get_zeroed_page(GFP_KERNEL);
dma_dom->domain.flags = PD_DMA_OPS_MASK;
dma_dom->domain.priv = dma_dom;
--
1.6.3.3
next prev parent reply other threads:[~2009-09-04 9:43 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-04 9:40 [PATCH 0/14] Page table handling updates for AMD-IOMMU (AMD-Vi) Joerg Roedel
2009-09-04 9:40 ` [PATCH 01/14] x86/amd-iommu: Make fetch_pte aware of dynamic mapping levels Joerg Roedel
2009-09-04 9:40 ` [PATCH 02/14] x86/amd-iommu: Use fetch_pte in iommu_unmap_page Joerg Roedel
2009-09-04 9:40 ` [PATCH 03/14] x86/amd-iommu: Use fetch_pte in amd_iommu_iova_to_phys Joerg Roedel
2009-09-04 9:40 ` [PATCH 04/14] x86/amd-iommu: Add a gneric version of amd_iommu_flush_all_devices Joerg Roedel
2009-09-04 9:40 ` [PATCH 05/14] x86/amd-iommu: Introduce set_dte_entry function Joerg Roedel
2009-09-04 9:40 ` [PATCH 06/14] x86/amd-iommu: Flush domains if address space size was increased Joerg Roedel
2009-09-04 9:40 ` [PATCH 07/14] x86/amd-iommu: Introduce increase_address_space function Joerg Roedel
2009-09-04 9:40 ` [PATCH 08/14] x86/amd-iommu: Change alloc_pte to support 64 bit address space Joerg Roedel
2009-09-04 9:40 ` [PATCH 09/14] x86/amd-iommu: Remove last usages of IOMMU_PTE_L0_INDEX Joerg Roedel
2009-09-04 9:40 ` [PATCH 10/14] x86/amd-iommu: Remove bus_addr check in iommu_map_page Joerg Roedel
2009-09-04 9:40 ` Joerg Roedel [this message]
2009-09-04 9:40 ` [PATCH 12/14] x86/amd-iommu: Remove old page table handling macros Joerg Roedel
2009-09-04 9:40 ` [PATCH 13/14] x86/amd-iommu: Support higher level PTEs in iommu_page_unmap Joerg Roedel
2009-09-04 9:40 ` [PATCH 14/14] x86/amd-iommu: Change iommu_map_page to support multiple page sizes Joerg Roedel
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