On Thu, May 02, 2019 at 12:08:01AM +, Paul Burton wrote:
> > Can you test the stack with the two updated patches and ack them if
> > they are fine? That would allow getting at least the infrastructure
> > and mips in for this merge window.
>
> Did you send a v2 of this patch?
>
> If so it ha
Hi Christoph,
On Wed, May 01, 2019 at 07:49:05PM +0200, Christoph Hellwig wrote:
> On Wed, May 01, 2019 at 05:40:34PM +, Paul Burton wrote:
> > > > If it is necessary then as-is this code will clear the allocated memory
> > > > using uncached writes which will be pretty slow. It would be much
On Wed, May 01, 2019 at 05:40:34PM +, Paul Burton wrote:
> > > If it is necessary then as-is this code will clear the allocated memory
> > > using uncached writes which will be pretty slow. It would be much more
> > > efficient to perform the memset before arch_dma_prep_coherent() & before
> >
Hi Christoph,
On Wed, May 01, 2019 at 07:29:12PM +0200, Christoph Hellwig wrote:
> On Wed, May 01, 2019 at 05:18:59PM +, Paul Burton wrote:
> > I'm not so sure about this part though.
> >
> > On MIPS we currently don't clear the allocated memory with memset. Is
> > doing that really necessary
On Wed, May 01, 2019 at 05:18:59PM +, Paul Burton wrote:
> I'm not so sure about this part though.
>
> On MIPS we currently don't clear the allocated memory with memset. Is
> doing that really necessary?
We are clearling it on mips, it is inside dma_direct_alloc_pages.
> If it is necessary t
Hi Christoph,
On Tue, Apr 30, 2019 at 07:00:29AM -0400, Christoph Hellwig wrote:
> diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c
> index 2c2772e9702a..d15a535c3e67 100644
> --- a/kernel/dma/direct.c
> +++ b/kernel/dma/direct.c
> @@ -164,6 +164,13 @@ void *dma_direct_alloc_pages(struct dev
A few architectures support uncached kernel segments. In that case we get
an uncached mapping for a given physica address by using an offset in the
uncached segement. Implement support for this scheme in the generic
dma-direct code instead of duplicating it in arch hooks.
Signed-off-by: Christop
