On Thu, Jun 30, 2022 at 09:55:16PM +0530, Shijith Thotton wrote: > If all devices are configured to run in IOVA mode as VA, physical > address field of mbuf (buf_iova) won't be used. In such cases, buf_iova > space is free to use as a dynamic field. So a new dynamic field member > (dynfield2) is added in mbuf structure to make use of that space. > > A new mbuf flag RTE_MBUF_F_DYNFIELD2 is introduced to help identify the > mbuf that can use dynfield2. > > Signed-off-by: Shijith Thotton <sthot...@marvell.com> > --- I disagree with this patch. The mbuf should always record the iova of the buffer directly, rather than forcing the drivers to query the EAL mode. This will likely also break all vector drivers right now, as they are sensitive to the mbuf layout and the position of the IOVA address in the buffer.
/Bruce
