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| author | Joerg Roedel <joerg.roedel@amd.com> | 2009-09-02 16:55:24 +0200 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2009-09-03 16:03:49 +0200 |
| commit | 8f7a017ce05ed4522809448e169daa44fe6edeb1 (patch) | |
| tree | a1c59481bfa6bd9a0eea9783bff84af65b5fb02e /arch | |
| parent | bad1cac28a707c69301a4d0612da9ccbecd51953 (diff) | |
| download | linux-8f7a017ce05ed4522809448e169daa44fe6edeb1.tar.gz linux-8f7a017ce05ed4522809448e169daa44fe6edeb1.tar.bz2 linux-8f7a017ce05ed4522809448e169daa44fe6edeb1.zip | |
x86/amd-iommu: Use 2-level page tables for dma_ops domains
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | 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 6ffb3e637657..addf6588c366 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; |