lkml.org 
[lkml]   [2015]   [May]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [Linaro-acpi] [V2 PATCH 1/5] ACPI / scan: Parse _CCA and setup device coherency
Date
On Thursday, May 07, 2015 11:07:08 AM Arnd Bergmann wrote:
> On Wednesday 06 May 2015 17:16:35 Suravee Suthikulanit wrote:
> > On 5/6/2015 5:21 PM, Rafael J. Wysocki wrote:
> > >>>> > >>+ bool
> > >>>> > >>+
> > >>>> > >>+config ACPI_SUPPORT_CCA_ZERO
> > >>> > >
> > >>> > >I guess this means "we support devices that can DMA, but are not coherent".
> > >>> > >right?
> > >> >
> > >> >Yes, basically when _CCA=0.
> > > So what about
> > >
> > > ARCH_SUPPORT_CACHE_INCOHERENT_DMA
> >
> > Since this is specific to ACPI _CCA, I just want to be clear with the
> > naming.
>
> How about directly using the architecture names here, this is inherently
> architecture specific, and it's more likely that if another architecture
> gets added in the future that it will have other requirements.

Sounds reasonable to me.

Rafael



\
 
 \ /
  Last update: 2015-05-07 22:01    [W:0.052 / U:0.264 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site