lkml.org 
[lkml]   [2019]   [Mar]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v1 4/9] iommu/vt-d: Add bounce buffer API for domain map/unmap
From
Date
Hi,

On 3/13/19 12:38 AM, Christoph Hellwig wrote:
> On Tue, Mar 12, 2019 at 02:00:00PM +0800, Lu Baolu wrote:
>> This adds the APIs for bounce buffer specified domain
>> map() and unmap(). The start and end partial pages will
>> be mapped with bounce buffered pages instead. This will
>> enhance the security of DMA buffer by isolating the DMA
>> attacks from malicious devices.
>
> Please reuse the swiotlb code instead of reinventing it.
>

I don't think we are doing the same thing as swiotlb here. But it's
always a good thing to reuse code if possible. I considered this when
writing this code, but I found it's hard to do. Do you mind pointing
me to the code which I could reuse?

Best regards,
Lu Baolu

\
 
 \ /
  Last update: 2019-03-13 03:11    [W:0.055 / U:0.248 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site