On Thu, Nov 05, 2020 at 06:43:06PM +0100, Christoph Hellwig wrote:
> On Thu, Nov 05, 2020 at 01:39:30PM -0400, Jason Gunthorpe wrote:
> > Hmm. This works for real devices like mlx5, but it means the three SW
> > devices will also resolve to a real PCI device that is not the DMA
> > device.
>
>
On Thu, Nov 05, 2020 at 01:39:30PM -0400, Jason Gunthorpe wrote:
> Hmm. This works for real devices like mlx5, but it means the three SW
> devices will also resolve to a real PCI device that is not the DMA
> device.
Does it? When I followed the links on my system rxe was a virtual
device without
On Thu, Nov 05, 2020 at 06:29:21PM +0100, Christoph Hellwig wrote:
> On Thu, Nov 05, 2020 at 01:23:57PM -0400, Jason Gunthorpe wrote:
> > But that depends on the calling driver doing this properly, and we
> > don't expose an API to get the PCI device of the struct ib_device
> > .. how does nvme
On Thu, Nov 05, 2020 at 01:23:57PM -0400, Jason Gunthorpe wrote:
> But that depends on the calling driver doing this properly, and we
> don't expose an API to get the PCI device of the struct ib_device
> .. how does nvme even work here?
The PCI p2pdma APIs walk the parent chains of a struct
On Thu, Nov 05, 2020 at 06:08:16PM +0100, Christoph Hellwig wrote:
> On Thu, Nov 05, 2020 at 10:34:18AM -0400, Jason Gunthorpe wrote:
> > The check is removed here, but I didn't see a matching check added to
> > the IB side? Something like:
> >
> > static int rdma_rw_map_sg(struct ib_device *dev,
On Thu, Nov 05, 2020 at 10:34:18AM -0400, Jason Gunthorpe wrote:
> The check is removed here, but I didn't see a matching check added to
> the IB side? Something like:
>
> static int rdma_rw_map_sg(struct ib_device *dev, struct scatterlist *sg,
> u32 sg_cnt, enum
On Thu, Nov 05, 2020 at 08:42:03AM +0100, Christoph Hellwig wrote:
> Now that all users of dma_virt_ops are gone we can remove the workaround
> for it in the PCI peer to peer code.
>
> Signed-off-by: Christoph Hellwig
> Reviewed-by: Logan Gunthorpe
> Acked-by: Bjorn Helgaas
>
Now that all users of dma_virt_ops are gone we can remove the workaround
for it in the PCI peer to peer code.
Signed-off-by: Christoph Hellwig
Reviewed-by: Logan Gunthorpe
Acked-by: Bjorn Helgaas
---
drivers/pci/p2pdma.c | 20
1 file changed, 20 deletions(-)
diff --git
