lkml.org 
[lkml]   [2014]   [Dec]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 0/5] iommu/vt-d: Fix crash dump failure caused by legacy DMA/IO
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
>>



\
 
 \ /
  Last update: 2014-12-12 04:01    [W:0.078 / U:0.248 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site