On 6/1/21 2:27 PM, Jani Nikula wrote:
On Tue, 01 Jun 2021, Thomas Hellström wrote:
Reading out of write-combining mapped memory is typically very slow
since the CPU doesn't prefetch. However some archs have special
instructions to do this.
So add a best-effort memcpy_from_wc taking dma-buf-m
On Tue, 01 Jun 2021, Thomas Hellström wrote:
> Reading out of write-combining mapped memory is typically very slow
> since the CPU doesn't prefetch. However some archs have special
> instructions to do this.
>
> So add a best-effort memcpy_from_wc taking dma-buf-map pointer
> arguments that attemp
Reading out of write-combining mapped memory is typically very slow
since the CPU doesn't prefetch. However some archs have special
instructions to do this.
So add a best-effort memcpy_from_wc taking dma-buf-map pointer
arguments that attempts to use a fast prefetching memcpy and
otherwise falls b
