Sorry I have no plan yet. Could you send me your logs on your AMD system? Thanks Zhenhua On 12/10/2014 04:46 PM, Baoquan He wrote: > Hi Joerg, ZhenHua, > > This issue happens on AMD iommu too, do you have any plans or > thoughts on that? > > Thanks > Baoquan > > On 11/17/14 at 02:38pm, Joerg Roedel wrote: >> On Fri, Nov 14, 2014 at 02:27:44PM +0800, Li, ZhenHua wrote: >>> I am working following your directions: >>> >>> 1. If the VT-d driver finds the IOMMU enabled, it reuses its root entry >>> table, and do NOT disable-enable iommu. Other data will be copied. >>> >>> 2. When a device driver issues the first dma_map command for a >>> device, we assign a new and empty page-table, thus removing all >>> mappings from the old kernel for the device. >>> >>> Please let me know if I get something wrong. >> >> Yes, this sounds right. Happily waiting for patches :) >> >> >> Joerg >>
