Displaying 3 results from an estimated 3 matches for "arch_virtio_update_dma_op".
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arch_virtio_update_dma_ops
2018 Jun 11
0
[RFC V2] virtio: Add platform specific DMA API translation for virito devices
...the case where the IOMMU flag
isn't set.
This will be equivalent to what we have today but avoids having 2
separate code path all over the driver.
Then a second stage, I think, is to replace this "hook" so that the
architecture gets a say in the matter.
Basically, something like:
arch_virtio_update_dma_ops(pci_dev, qemu_direct_mode).
IE, virtio would tell the arch whether the "other side" is in fact QEMU
in a mode that bypasses the IOMMU and is cache coherent with the guest.
This is our legacy "qemu special" mode. If the performance is
sufficient we may want to deprecate it over...
2018 May 31
7
[RFC V2] virtio: Add platform specific DMA API translation for virito devices
On Thu, May 31, 2018 at 09:09:24AM +0530, Anshuman Khandual wrote:
> On 05/24/2018 12:51 PM, Ram Pai wrote:
> > On Wed, May 23, 2018 at 09:50:02PM +0300, Michael S. Tsirkin wrote:
> >> subj: s/virito/virtio/
> >>
> > ..snip..
> >>> machine_subsys_initcall_sync(pseries, tce_iommu_bus_notifier_init);
> >>> +
> >>> +bool
2018 May 31
7
[RFC V2] virtio: Add platform specific DMA API translation for virito devices
On Thu, May 31, 2018 at 09:09:24AM +0530, Anshuman Khandual wrote:
> On 05/24/2018 12:51 PM, Ram Pai wrote:
> > On Wed, May 23, 2018 at 09:50:02PM +0300, Michael S. Tsirkin wrote:
> >> subj: s/virito/virtio/
> >>
> > ..snip..
> >>> machine_subsys_initcall_sync(pseries, tce_iommu_bus_notifier_init);
> >>> +
> >>> +bool