Messages in this thread | | | Date | Mon, 29 Sep 2008 03:06:40 +0900 | Subject | Re: [PATCH 3/3] x86/iommu: use __GFP_ZERO instead of memset for GART | From | FUJITA Tomonori <> |
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On Sat, 27 Sep 2008 20:18:55 +0200 Ingo Molnar <mingo@elte.hu> wrote:
> another thing: > > How hard would it be to add an CONFIG_IOMMU_DEBUG option that forces as > many DMA requests to go via the IOMMU as possible? > > This slows things down of course so it's only for debugging - but it > also makes sure that we utilize the IOMMU code to the maximum - which is > not normally the case.
If you use iommu=force boot option, GART always tries to use the IOMMU.
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