On Tue, Nov 20, 2018 at 10:20:10AM +0100, Christoph Hellwig wrote:
> On Mon, Nov 05, 2018 at 02:40:51PM -0800, Nicolin Chen wrote:
> > > > In general, this seems to make sense to me. It does represent a
> > > > theoretical
> > > > change in behaviour for devices which have their own CMA area
On Mon, Nov 05, 2018 at 02:40:51PM -0800, Nicolin Chen wrote:
> > > In general, this seems to make sense to me. It does represent a
> > > theoretical
> > > change in behaviour for devices which have their own CMA area somewhere
> > > other than kernel memory, and only ever make non-atomic
Robin? Christ?
On Mon, Nov 05, 2018 at 02:40:50PM -0800, Nicolin Chen wrote:
> On Fri, Nov 02, 2018 at 07:35:42AM +0100, Christoph Hellwig wrote:
> > On Thu, Nov 01, 2018 at 02:07:55PM +, Robin Murphy wrote:
> > > On 31/10/2018 20:03, Nicolin Chen wrote:
> > >> The addresses within a single
On Fri, Nov 02, 2018 at 07:35:42AM +0100, Christoph Hellwig wrote:
> On Thu, Nov 01, 2018 at 02:07:55PM +, Robin Murphy wrote:
> > On 31/10/2018 20:03, Nicolin Chen wrote:
> >> The addresses within a single page are always contiguous, so it's
> >> not so necessary to allocate one single page
On Thu, Nov 01, 2018 at 02:07:55PM +, Robin Murphy wrote:
> On 31/10/2018 20:03, Nicolin Chen wrote:
>> The addresses within a single page are always contiguous, so it's
>> not so necessary to allocate one single page from CMA area. Since
>> the CMA area has a limited predefined size of space,
On Thu, Nov 01, 2018 at 07:32:39PM +, Robin Murphy wrote:
> > On Thu, Nov 01, 2018 at 02:07:55PM +, Robin Murphy wrote:
> > > On 31/10/2018 20:03, Nicolin Chen wrote:
> > > > The addresses within a single page are always contiguous, so it's
> > > > not so necessary to allocate one single
On 01/11/2018 18:04, Nicolin Chen wrote:
Hi Robin,
Thanks for the comments.
On Thu, Nov 01, 2018 at 02:07:55PM +, Robin Murphy wrote:
On 31/10/2018 20:03, Nicolin Chen wrote:
The addresses within a single page are always contiguous, so it's
not so necessary to allocate one single page
Hi Robin,
Thanks for the comments.
On Thu, Nov 01, 2018 at 02:07:55PM +, Robin Murphy wrote:
> On 31/10/2018 20:03, Nicolin Chen wrote:
> > The addresses within a single page are always contiguous, so it's
> > not so necessary to allocate one single page from CMA area. Since
> > the CMA area
On 31/10/2018 20:03, Nicolin Chen wrote:
The addresses within a single page are always contiguous, so it's
not so necessary to allocate one single page from CMA area. Since
the CMA area has a limited predefined size of space, it might run
out of space in some heavy use case, where there might be
The addresses within a single page are always contiguous, so it's
not so necessary to allocate one single page from CMA area. Since
the CMA area has a limited predefined size of space, it might run
out of space in some heavy use case, where there might be quite a
lot CMA pages being allocated for
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