On Wed, Aug 7, 2019 at 6:58 PM Jacob Wen wrote:
>
>
> On 8/7/19 4:38 PM, Firo Yang wrote:
> > The 08/07/2019 15:56, Jacob Wen wrote:
> >> I think the description is not correct. Consider using something like
> >> below.
> > Thank you for comments.
> >
> >> In Xen environment, due to memory
On 8/7/19 4:38 PM, Firo Yang wrote:
The 08/07/2019 15:56, Jacob Wen wrote:
I think the description is not correct. Consider using something like below.
Thank you for comments.
In Xen environment, due to memory fragmentation ixgbe may allocate a 'DMA'
buffer with pages that are not
The 08/07/2019 09:06, Alexander Duyck wrote:
> On Wed, Aug 7, 2019 at 7:09 AM Maciej Fijalkowski
> wrote:
> >
> > On Wed, 7 Aug 2019 08:38:43 +
> > Firo Yang wrote:
> >
> > > The 08/07/2019 15:56, Jacob Wen wrote:
> > > > I think the description is not correct. Consider using something like
On Wed, Aug 7, 2019 at 7:09 AM Maciej Fijalkowski
wrote:
>
> On Wed, 7 Aug 2019 08:38:43 +
> Firo Yang wrote:
>
> > The 08/07/2019 15:56, Jacob Wen wrote:
> > > I think the description is not correct. Consider using something like
> > > below.
> > Thank you for comments.
> >
> > >
> > > In
The 08/07/2019 15:56, Jacob Wen wrote:
> I think the description is not correct. Consider using something like below.
Thank you for comments.
>
> In Xen environment, due to memory fragmentation ixgbe may allocate a 'DMA'
> buffer with pages that are not physically contiguous.
Actually, I didn't
I think the description is not correct. Consider using something like below.
In Xen environment, due to memory fragmentation ixgbe may allocate a
'DMA' buffer with pages that are not physically contiguous.
A NIC doesn't support directly write such buffer. So xen-swiotlb would
use the pages,
In Xen environment, if Xen-swiotlb is enabled, ixgbe driver
could possibly allocate a page, DMA memory buffer, for the first
fragment which is not suitable for Xen-swiotlb to do DMA operations.
Xen-swiotlb have to internally allocate another page for doing DMA
operations. It requires syncing
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