On Fri, Aug 24, 2018 at 03:52:23PM +0200, Juergen Gross wrote:
> On 17/08/18 17:59, Roger Pau Monné wrote:
> > On Mon, Aug 13, 2018 at 04:01:09PM +0200, Juergen Gross wrote:
> >> Persistent grants are used in the Xen's blkfront/blkback drivers to
> >> avoid mapping/unmapping of I/O buffers in the
On 17/08/18 17:59, Roger Pau Monné wrote:
> On Mon, Aug 13, 2018 at 04:01:09PM +0200, Juergen Gross wrote:
>> Persistent grants are used in the Xen's blkfront/blkback drivers to
>> avoid mapping/unmapping of I/O buffers in the backend for each I/O.
>>
>> While this speeds up processing quite a bit
On Mon, Aug 13, 2018 at 04:01:09PM +0200, Juergen Gross wrote:
> Persistent grants are used in the Xen's blkfront/blkback drivers to
> avoid mapping/unmapping of I/O buffers in the backend for each I/O.
>
> While this speeds up processing quite a bit there are problems related
> to persistent
Persistent grants are used in the Xen's blkfront/blkback drivers to
avoid mapping/unmapping of I/O buffers in the backend for each I/O.
While this speeds up processing quite a bit there are problems related
to persistent grants in some configurations: domains with multiple
block devices making
