Re: [PATCH 00/10] Connect VFIO to IOMMUFD

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On Tue, Nov 01, 2022 at 11:04:38AM +0800, Yi Liu wrote:
> On 2022/11/1 07:24, Jason Gunthorpe wrote:
> > On Mon, Oct 31, 2022 at 08:25:39PM +0800, Yi Liu wrote:
> > > > There is something wrong with the test suite that it isn't covering
> > > > the above, I'm going to look into that today.
> > > 
> > > sounds to be the cause. I didn't see any significant change in vfio_main.c
> > > that may fail gvt. So should the iommufd changes. Then we will re-run the
> > > test after your update.:-)
> > 
> > I updated the github with all the changes made so far, it is worth
> > trying again!
> 
> gvt is still failing with below call trace in host side. vfio_unpin_pages()
> is still in problem. Any idea on it?

Oh, this is my mistake, I rushed a bit getting updated branches:

diff --git a/drivers/vfio/iommufd.c b/drivers/vfio/iommufd.c
index 40eb6931ab2321..29e7b1fdd0cd4a 100644
--- a/drivers/vfio/iommufd.c
+++ b/drivers/vfio/iommufd.c
@@ -118,6 +118,7 @@ static void vfio_emulated_unmap(void *data, unsigned long iova,
 }
 
 static const struct iommufd_access_ops vfio_user_ops = {
+	.needs_pin_pages = 1,
 	.unmap = vfio_emulated_unmap,
 };

Thanks, 
Jason



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