[dpdk-dev] [PATCH v4 02/15] mem: introduce IOVA type

[Thomas Monjalon]

06/11/2017 09:51, santosh:
> 
> On Monday 06 November 2017 02:07 PM, Thomas Monjalon wrote:
> > 06/11/2017 06:38, santosh:
> >> On Monday 06 November 2017 07:11 AM, Thomas Monjalon wrote:
> >>> The IO virtual addresses may be used instead of physical addresses.
> >>> As IOVA is more generic, it should be used in most places instead
> >>> of physical address wording.
> >>>
> >>> Signed-off-by: Thomas Monjalon <thomas at monjalon.net>
> >>> ---
> >>> +/**
> >>> + * IO virtual address type.
> >>> + * When the physical addressing mode is in use,
> >>> + * the translation from a virtual address to a physical address
> >>> + * is a direct mapping, i.e. the same value.
> >>> + */
> >> I guess - that description applicable for iova=va mode
> >> and for iova=pa mode - Need to do explicit virt2phy translation.
> >> I believe you mis-wrote - s/physical addressing mode/virtual addressing mode.
> > Not sure to understand your comment.
> > Let me reword the description to be less ambiguous:
> >
> > * When the physical addressing mode (IOVA as PA) is in use,
> > * the translation from an IO virtual address (IOVA) to a physical address
> > * is a direct mapping, i.e. the same value.
> > * Otherwise, in virtual mode (IOVA as VA), an IOMMU may do the translation.
> >
> > Is this description correct?
> >
> Yes.

Good, so I can change the description with this one
and add your ack, right?