Messages in this thread | | | Date | Fri, 21 Dec 2012 21:10:30 -0800 | Subject | Re: [PATCH v7 24/27] x86: Add swiotlb force off support | From | Yinghai Lu <> |
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On Fri, Dec 21, 2012 at 6:42 PM, Eric W. Biederman <ebiederm@xmission.com> wrote: > Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> writes: > >> On Mon, Dec 17, 2012 at 11:15:56PM -0800, Yinghai Lu wrote: >>> So use could disable swiotlb from command line, even swiotlb support >>> is compiled in. Just like we have intel_iommu=on and intel_iommu=off. >> >> You really need to spell out why this is useful. > > YH why can't we safely autodetect that the swiotlb is unusable when > there is no memory below 4G free?
good point.
will give it try.
Yinghai
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