Messages in this thread Patch in this message | | | From | Joerg Roedel <> | Subject | [PATCH 10/12] amd-iommu: disable round-robin allocator for CONFIG_IOMMU_STRESS | Date | Fri, 22 May 2009 14:21:31 +0200 |
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[ impact: put high load on iommu tlb to find stale entry bugs ]
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> --- arch/x86/kernel/amd_iommu.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index 31d56c3..543822b 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -783,6 +783,11 @@ static unsigned long dma_ops_alloc_addresses(struct device *dev, { unsigned long address; +#ifdef CONFIG_IOMMU_STRESS + dom->next_address = 0; + dom->need_flush = true; +#endif + address = dma_ops_area_alloc(dev, dom, pages, align_mask, dma_mask, dom->next_address); -- 1.6.3.1
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