Christoph Hellwig writes:
> diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c
> index dbfc7056d7df..d442d23e182b 100644
> --- a/arch/powerpc/kernel/dma.c
> +++ b/arch/powerpc/kernel/dma.c
> @@ -247,6 +252,8 @@ static inline void dma_nommu_unmap_page(struct device
> *dev,
>
On Mon, Dec 17, 2018 at 08:39:17AM +0100, Christophe Leroy wrote:
> I can help you with powerpc 8xx actually.
Below is a patch that implements the proper scheme on top of the series
in this thread. Compile tested with tqm8xx_defconfig and tqm8xx_defconfig
+ CONFIG_HIGHMEM only.
diff --git a/arch
Le 17/12/2018 à 08:34, Christoph Hellwig a écrit :
On Mon, Dec 17, 2018 at 07:41:54AM +0100, Christophe Leroy wrote:
Le 16/12/2018 à 18:19, Christoph Hellwig a écrit :
The unmap methods need to transfer memory ownership back from the device
to the cpu by identical means as dma_sync_*_to_cp
On Mon, Dec 17, 2018 at 07:41:54AM +0100, Christophe Leroy wrote:
>
>
> Le 16/12/2018 à 18:19, Christoph Hellwig a écrit :
>> The unmap methods need to transfer memory ownership back from the device
>> to the cpu by identical means as dma_sync_*_to_cpu. I'm not sure powerpc
>> needs to do any work
Le 16/12/2018 à 18:19, Christoph Hellwig a écrit :
The unmap methods need to transfer memory ownership back from the device
to the cpu by identical means as dma_sync_*_to_cpu. I'm not sure powerpc
needs to do any work in this transfer direction, but given that it does
invalidate the caches in
The unmap methods need to transfer memory ownership back from the device
to the cpu by identical means as dma_sync_*_to_cpu. I'm not sure powerpc
needs to do any work in this transfer direction, but given that it does
invalidate the caches in dma_sync_*_to_cpu already we should make sure
we also d
