On 2019-07-25 1:29 p.m., Jason Gunthorpe wrote:
> On Thu, Jul 25, 2019 at 01:17:02PM -0600, Logan Gunthorpe wrote:
>>
>>
>> On 2019-07-25 12:58 p.m., Jason Gunthorpe wrote:
>>> On Mon, Jul 22, 2019 at 05:08:56PM -0600, Logan Gunthorpe wrote:
Any requests that traverse the host bridge will
On Thu, Jul 25, 2019 at 01:17:02PM -0600, Logan Gunthorpe wrote:
>
>
> On 2019-07-25 12:58 p.m., Jason Gunthorpe wrote:
> > On Mon, Jul 22, 2019 at 05:08:56PM -0600, Logan Gunthorpe wrote:
> >> Any requests that traverse the host bridge will need to be mapped into
> >> the IOMMU, so call
On 2019-07-25 12:58 p.m., Jason Gunthorpe wrote:
> On Mon, Jul 22, 2019 at 05:08:56PM -0600, Logan Gunthorpe wrote:
>> Any requests that traverse the host bridge will need to be mapped into
>> the IOMMU, so call dma_map_sg() inside pci_p2pdma_map_sg() when
>> appropriate.
>>
>> Similarly, call
On Mon, Jul 22, 2019 at 05:08:56PM -0600, Logan Gunthorpe wrote:
> Any requests that traverse the host bridge will need to be mapped into
> the IOMMU, so call dma_map_sg() inside pci_p2pdma_map_sg() when
> appropriate.
>
> Similarly, call dma_unmap_sg() inside pci_p2pdma_unmap_sg().
>
>
On 2019-07-25 10:34 a.m., Jason Gunthorpe wrote:
> On Thu, Jul 25, 2019 at 10:00:25AM -0600, Logan Gunthorpe wrote:
>>
>>
>> On 2019-07-25 12:10 a.m., Christoph Hellwig wrote:
>>> On Wed, Jul 24, 2019 at 09:58:59AM -0600, Logan Gunthorpe wrote:
On 2019-07-24 12:32 a.m., Christoph
On Thu, Jul 25, 2019 at 10:00:25AM -0600, Logan Gunthorpe wrote:
>
>
> On 2019-07-25 12:10 a.m., Christoph Hellwig wrote:
> > On Wed, Jul 24, 2019 at 09:58:59AM -0600, Logan Gunthorpe wrote:
> >>
> >>
> >> On 2019-07-24 12:32 a.m., Christoph Hellwig wrote:
> struct dev_pagemap
On 2019-07-25 12:10 a.m., Christoph Hellwig wrote:
> On Wed, Jul 24, 2019 at 09:58:59AM -0600, Logan Gunthorpe wrote:
>>
>>
>> On 2019-07-24 12:32 a.m., Christoph Hellwig wrote:
struct dev_pagemap *pgmap = sg_page(sg)->pgmap;
+ struct pci_dev *client;
+ int dist;
+
On Wed, Jul 24, 2019 at 09:58:59AM -0600, Logan Gunthorpe wrote:
>
>
> On 2019-07-24 12:32 a.m., Christoph Hellwig wrote:
> >>struct dev_pagemap *pgmap = sg_page(sg)->pgmap;
> >> + struct pci_dev *client;
> >> + int dist;
> >> +
> >> + client = find_parent_pci_dev(dev);
> >> + if
On 2019-07-24 12:32 a.m., Christoph Hellwig wrote:
>> struct dev_pagemap *pgmap = sg_page(sg)->pgmap;
>> +struct pci_dev *client;
>> +int dist;
>> +
>> +client = find_parent_pci_dev(dev);
>> +if (WARN_ON_ONCE(!client))
>> +return 0;
>>
>> +dist =
> struct dev_pagemap *pgmap = sg_page(sg)->pgmap;
> + struct pci_dev *client;
> + int dist;
> +
> + client = find_parent_pci_dev(dev);
> + if (WARN_ON_ONCE(!client))
> + return 0;
>
> + dist = upstream_bridge_distance(pgmap->pci_p2pdma_provider,
> +
Any requests that traverse the host bridge will need to be mapped into
the IOMMU, so call dma_map_sg() inside pci_p2pdma_map_sg() when
appropriate.
Similarly, call dma_unmap_sg() inside pci_p2pdma_unmap_sg().
Signed-off-by: Logan Gunthorpe
---
drivers/pci/p2pdma.c | 31
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