On Friday, July 14, 2017 7:38:01 AM PDT Lucas Stach wrote: > While this is no build dependency, etnaviv will only work correctly on most > systems if CMA and DMA_CMA are enabled. Select both options if available to > avoid users ending up with a non-working GPU due to a lacking kernel config. > > Signed-off-by: Lucas Stach <[email protected]> > --- > drivers/gpu/drm/etnaviv/Kconfig | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/gpu/drm/etnaviv/Kconfig > b/drivers/gpu/drm/etnaviv/Kconfig index 71cee4e9fefb..38b477b5fbf9 100644 > --- a/drivers/gpu/drm/etnaviv/Kconfig > +++ b/drivers/gpu/drm/etnaviv/Kconfig > @@ -10,6 +10,8 @@ config DRM_ETNAVIV > select IOMMU_API > select IOMMU_SUPPORT > select WANT_DEV_COREDUMP > + select CMA if HAVE_DMA_CONTIGUOUS > + select DMA_CMA if HAVE_DMA_CONTIGUOUS > help > DRM driver for Vivante GPUs. IIRC, This at least half solves it. Does the user of systems with > 2 GiB need to explicitly specify cma size for it to work?
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