Re: [PATCH v6 24/27] x86: Add swiotlb force off support

2012-12-22 Thread H. Peter Anvin
On 12/21/2012 09:00 PM, Yinghai Lu wrote: On Fri, Dec 21, 2012 at 6:18 PM, Konrad Rzeszutek Wilk wrote: On Thu, Dec 13, 2012 at 02:02:18PM -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_i

Re: [PATCH v6 24/27] x86: Add swiotlb force off support

2012-12-21 Thread Yinghai Lu
On Fri, Dec 21, 2012 at 6:18 PM, Konrad Rzeszutek Wilk wrote: > On Thu, Dec 13, 2012 at 02:02:18PM -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. > > Does this have any usage

Re: [PATCH v6 24/27] x86: Add swiotlb force off support

2012-12-21 Thread Konrad Rzeszutek Wilk
On Thu, Dec 13, 2012 at 02:02:18PM -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. Does this have any usage besides testing? And also pls in the future use scripts/get_maintain