Rusty Russell 7b21e34fd1 virtio: harsher barriers for rpmsg. ... We were cheating with our barriers; using the smp ones rather than the real device ones. That was fine, until rpmsg came along, which is used to talk to a real device (a non-SMP CPU). Unfortunately, just putting back the real barriers (reverting d57ed95d) causes a performance regression on virtio-pci. In particular, Amos reports netbench's TCP_RR over virtio_net CPU utilization increased up to 35% while throughput went down by up to 14%. By comparison, this branch is in the noise. Reference: https://lkml.org/lkml/2011/12/11/22 Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>		2012-01-12 15:44:42 +10:30
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config.c
Kconfig	virtio: add HAS_IOMEM dependency to MMIO platform bus driver	2011-11-24 13:04:47 +10:30
Makefile	virtio: Add platform bus driver for memory mapped virtio device	2011-11-02 11:41:01 +10:30
virtio_balloon.c	virtio: Add module.h to drivers/virtio users.	2011-10-31 19:32:14 -04:00
virtio_mmio.c	virtio: harsher barriers for rpmsg.	2012-01-12 15:44:42 +10:30
virtio_pci.c	virtio: harsher barriers for rpmsg.	2012-01-12 15:44:42 +10:30
virtio_ring.c	virtio: harsher barriers for rpmsg.	2012-01-12 15:44:42 +10:30
virtio.c	virtio: Add module.h to drivers/virtio users.	2011-10-31 19:32:14 -04:00