Re: [PATCH v4 0/6] virtio core DMA API conversion

[Christian Borntraeger]

Am 30.10.2015 um 02:09 schrieb Andy Lutomirski:
> This switches virtio to use the DMA API unconditionally.  I'm sure
> it breaks things, but it seems to work on x86 using virtio-pci, with
> and without Xen, and using both the modern 1.0 variant and the
> legacy variant.
> 
> This appears to work on native and Xen x86_64 using both modern and
> legacy virtio-pci.  It also appears to work on arm and arm64.
> 
> It definitely won't work as-is on s390x, and I haven't been able to
> test Christian's patches because I can't get virtio-ccw to work in
> QEMU at all.  I don't know what I'm doing wrong.


[...]
>   virtio-net: Stop doing DMA from the stack
> 
>  drivers/net/virtio_net.c           |  34 ++--
>  drivers/virtio/Kconfig             |   2 +-
>  drivers/virtio/virtio_mmio.c       |  67 ++-----
>  drivers/virtio/virtio_pci_common.h |   6 -
>  drivers/virtio/virtio_pci_legacy.c |  42 ++---
>  drivers/virtio/virtio_pci_modern.c |  61 ++-----
>  drivers/virtio/virtio_ring.c       | 348 ++++++++++++++++++++++++++++++-------

do you also have an untested patch for drivers/s390/virtio/* ?



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