Re: [PATCH] vfio-pci: Use io_remap_pfn_range() for PCI IO memory

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Subject: Re: [PATCH] vfio-pci: Use io_remap_pfn_range() for PCI IO memory
From: Jason Gunthorpe <jgg@xxxxxxxxxx>
Date: Thu, 26 Nov 2020 16:13:39 -0400
Cc: Tom Lendacky <thomas.lendacky@xxxxxxx>, Cornelia Huck <cohuck@xxxxxxxxxx>, <kvm@xxxxxxxxxxxxxxx>, Alex Williamson <alex.williamson@xxxxxxxxxx>
In-reply-to: <20201117181754.GC13873@xz-x1>
References: <0-v1-331b76591255+552-vfio_sme_jgg@nvidia.com> <20201105233949.GA138364@xz-x1> <20201116155341.GL917484@nvidia.com> <02bd74bb-b672-da91-aae7-6364c4bf555f@amd.com> <20201116232033.GR917484@nvidia.com> <e076f2eb-7c27-5b16-2f45-4c2068c4c264@amd.com> <20201117155757.GA13873@xz-x1> <57f51f08-1dec-e3d6-b636-71c8a00142fb@amd.com> <20201117181754.GC13873@xz-x1>

On Tue, Nov 17, 2020 at 01:17:54PM -0500, Peter Xu wrote:
 
> Logically this patch should fix that, just like the dpdk scenario where mmio
> regions were accessed from userspace (qemu).  From that pov, I think this patch
> should help.
> 
> Acked-by: Peter Xu <peterx@xxxxxxxxxx>

Thanks Peter

Is there more to do here?

Jason

Follow-Ups:
- Re: [PATCH] vfio-pci: Use io_remap_pfn_range() for PCI IO memory
  - From: Tom Lendacky

References:
- [PATCH] vfio-pci: Use io_remap_pfn_range() for PCI IO memory
  - From: Jason Gunthorpe
- Re: [PATCH] vfio-pci: Use io_remap_pfn_range() for PCI IO memory
  - From: Peter Xu
- Re: [PATCH] vfio-pci: Use io_remap_pfn_range() for PCI IO memory
  - From: Jason Gunthorpe
- Re: [PATCH] vfio-pci: Use io_remap_pfn_range() for PCI IO memory
  - From: Tom Lendacky
- Re: [PATCH] vfio-pci: Use io_remap_pfn_range() for PCI IO memory
  - From: Jason Gunthorpe
- Re: [PATCH] vfio-pci: Use io_remap_pfn_range() for PCI IO memory
  - From: Tom Lendacky
- Re: [PATCH] vfio-pci: Use io_remap_pfn_range() for PCI IO memory
  - From: Peter Xu
- Re: [PATCH] vfio-pci: Use io_remap_pfn_range() for PCI IO memory
  - From: Tom Lendacky
- Re: [PATCH] vfio-pci: Use io_remap_pfn_range() for PCI IO memory
  - From: Peter Xu

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