user/sven/linux.git/include/uapi/linux/virtio_ring.h, branch v4.0Linux Kernel
https://git.stealer.net/cgit.cgi/user/sven/linux.git/atom?h=v4.02014-12-29T08:54:54Zvirtio_ring: document alignment requirements2014-12-29T08:54:54ZMichael S. Tsirkinmst@redhat.com2014-12-25T14:03:27Zurn:sha1:b28e0506fafd9c987bba7a6a71ea02a37fcabdea
Host needs to know vring element alignment requirements:
simply doing alignof on structures doesn't work reliably: on some
platforms gcc has alignof(uint32_t) == 2.
Add macros for alignment as specified in virtio 1.0 cs01,
export them to userspace as well.
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
virtio: memory access APIs2014-12-09T10:05:24ZMichael S. Tsirkinmst@redhat.com2014-10-22T12:35:56Zurn:sha1:eef960a04354d13426c43a4e3750a5e2b383040c
virtio 1.0 makes all memory structures LE, so
we need APIs to conditionally do a byteswap on BE
architectures.
To make it easier to check code statically,
add virtio specific types for multi-byte integers
in memory.
Add low level wrappers that do a byteswap conditionally, these will be
useful e.g. for vhost. Add high level wrappers that
query device endian-ness and act accordingly.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
UAPI: (Scripted) Disintegrate include/linux2012-10-13T09:46:48ZDavid Howellsdhowells@redhat.com2012-10-13T09:46:48Zurn:sha1:607ca46e97a1b6594b29647d98a32d545c24bdff
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Michael Kerrisk <mtk.manpages@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Dave Jones <davej@redhat.com>