• Lucas Stach's avatar
    UNCLEAN: get network RX pages from DMA32 zone · ddf69ca5
    Lucas Stach authored
    
    
    Peripherals on i.MX8M are unable to DMA to memory above the 4GB mark.
    This leads to reduced performance due to bounce buffering, or complete
    system failure if there is not enough bounce buffer space available.
    
    As the network RX buffer rings constitute a fair amount of DMA mapped
    memory, make sure to get them from the DMA32 zone, to avoid any bounce
    buffering.
    Signed-off-by: Lucas Stach's avatarLucas Stach <l.stach@pengutronix.de>
    ddf69ca5
skbuff.h 127 KB