Commit-ID: 8f7a017ce05ed4522809448e169daa44fe6edeb1 Gitweb: http://git.kernel.org/tip/8f7a017ce05ed4522809448e169daa44fe6edeb1 Author: Joerg Roedel <joerg.roedel@xxxxxxx> AuthorDate: Wed, 2 Sep 2009 16:55:24 +0200 Committer: Joerg Roedel <joerg.roedel@xxxxxxx> CommitDate: Thu, 3 Sep 2009 16:03:49 +0200 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@xxxxxxx> --- 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; -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
|