• Rusty Russell's avatar
    virtio: change config to guest endian. · 72e61eb4
    Rusty Russell authored
    A recent proposed feature addition to the virtio block driver revealed
    some flaws in the API, in particular how easy it is to break big
    endian machines.
    
    The virtio config space was originally chosen to be little-endian,
    because we thought the config might be part of the PCI config space
    for virtio_pci.  It's actually a separate mmio region, so that
    argument holds little water; as only x86 is currently using the virtio
    mechanism, we can change this (but must do so now, before the
    impending s390 merge).
    
    API changes:
    - __virtio_config_val() just becomes a striaght vdev->config_get() call.
    Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
    72e61eb4
virtio_blk.c 7.81 KB