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[Qemu-devel] [PATCH 0/6] virtio/vhost cross-endian cleanup
From: |
Greg Kurz |
Subject: |
[Qemu-devel] [PATCH 0/6] virtio/vhost cross-endian cleanup |
Date: |
Thu, 07 Jan 2016 12:31:56 +0100 |
User-agent: |
StGit/0.17.1-dirty |
This series brings some improvements to the cross-endian support in the
virtio and vhost code:
- use qemu_set_vnet_be() and qemu_set_vnet_le() directly from virtio-net,
so that backend cross-endian capabilities benefit to both emulated and
vhost accelerated devices
- optimize virtio_access_is_big_endian() for little-endian targets
- various cleanups
These patches had already been posted last year as two separate series:
https://lists.nongnu.org/archive/html/qemu-devel/2015-11/msg04166.html
https://lists.nongnu.org/archive/html/qemu-devel/2015-12/msg02827.html
I could not observe performance changes between guest and host on x86 with
an emulated virtio-net device.
---
Greg Kurz (6):
virtio-net: use the backend cross-endian capabilities
Revert "vhost-net: tell tap backend about the vnet endianness"
virtio: drop the virtio_needs_swap() helper
virtio: move cross-endian helper to vhost
vhost: move virtio 1.0 check to cross-endian helper
virtio: optimize virtio_access_is_big_endian() for little-endian targets
hw/net/vhost_net.c | 33 +------------------------------
hw/net/virtio-net.c | 40 +++++++++++++++++++++++++++++++++++--
hw/virtio/vhost.c | 22 +++++++++++++++++---
include/hw/virtio/virtio-access.h | 25 +++--------------------
include/hw/virtio/virtio-net.h | 1 +
5 files changed, 61 insertions(+), 60 deletions(-)
- [Qemu-devel] [PATCH 0/6] virtio/vhost cross-endian cleanup,
Greg Kurz <=
[Qemu-devel] [PATCH 2/6] Revert "vhost-net: tell tap backend about the vnet endianness", Greg Kurz, 2016/01/07