Messages in this thread Patch in this message |  | | | From | Joerg Roedel <> | | Subject | [PATCH 12/12] amd-iommu: don't free dma adresses below 512MB with CONFIG_IOMMU_STRESS | | Date | Fri, 22 May 2009 14:21:33 +0200 |
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[ impact: stress test automatic aperture enlargement code ]
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 33434c4..04ff5ec 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -824,6 +824,11 @@ static void dma_ops_free_addresses(struct dma_ops_domain *dom, BUG_ON(i >= APERTURE_MAX_RANGES || range == NULL); +#ifdef CONFIG_IOMMU_STRESS + if (i < 4) + return; +#endif + if (address >= dom->next_address) dom->need_flush = true; -- 1.6.3.1
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