On Tue, 2019-10-15 at 03:23 -0700, Christoph Hellwig wrote:
> On Mon, Oct 14, 2019 at 08:31:06PM +0200, Nicolas Saenz Julienne wrote:
> > The Raspberry Pi 4 has a 1GB ZONE_DMA area starting at address
> > 0x and a mapping between physical and DMA memory offset by
> > 0xc000. It transpi
On Mon, Oct 14, 2019 at 08:31:06PM +0200, Nicolas Saenz Julienne wrote:
> The Raspberry Pi 4 has a 1GB ZONE_DMA area starting at address
> 0x and a mapping between physical and DMA memory offset by
> 0xc000. It transpires that, on non LPAE systems, any attempt to
> translate physical a
The Raspberry Pi 4 has a 1GB ZONE_DMA area starting at address
0x and a mapping between physical and DMA memory offset by
0xc000. It transpires that, on non LPAE systems, any attempt to
translate physical addresses outside of ZONE_DMA will result in an
overflow. The resulting DMA addre
