Re: [rfc 6/6] dma-remap: double the default DMA coherent pool size

2020-03-05 Thread Christoph Hellwig
On Sun, Mar 01, 2020 at 04:05:27PM -0800, David Rientjes wrote: > When AMD memory encryption is enabled, some devices may used more than > 256KB/sec from the atomic pools. Double the default size to make the > original size and expansion more appropriate. > > This provides a slight optimization o

[rfc 6/6] dma-remap: double the default DMA coherent pool size

2020-03-01 Thread David Rientjes via iommu
When AMD memory encryption is enabled, some devices may used more than 256KB/sec from the atomic pools. Double the default size to make the original size and expansion more appropriate. This provides a slight optimization on initial expansion and is deemed appropriate for all configs with CONFIG_