xen_dma_map_page uses a different and more complicated check for foreign
pages than the other three cache maintainance helpers. Switch it to the
simpler pfn_valid method a well, and document the scheme with a single
improved comment in xen_dma_map_page.
Signed-off-by: Christoph Hellwig
Hi Christoph,
On 8/16/19 2:00 PM, Christoph Hellwig wrote:
xen_dma_map_page uses a different and more complicated check for
foreign pages than the other three cache maintainance helpers.
Switch it to the simpler pfn_vali method a well.
NIT: s/pfn_vali/pfn_valid/
Signed-off-by: Christoph
xen_dma_map_page uses a different and more complicated check for
foreign pages than the other three cache maintainance helpers.
Switch it to the simpler pfn_vali method a well.
Signed-off-by: Christoph Hellwig
---
include/xen/page-coherent.h | 9 ++---
1 file changed, 2 insertions(+), 7
