Ladi Prosek 50e1c4d90a virtio_ring: Make interrupt suppression spec compliant ...

commit 0ea1e4a6d9b62cf29e210d2b4ba9fd43917522e3 upstream.

According to the spec, if the VIRTIO_RING_F_EVENT_IDX feature bit is
negotiated the driver MUST set flags to 0. Not dirtying the available
ring in virtqueue_disable_cb also has a minor positive performance
impact, improving L1 dcache load missed by ~0.5% in vring_bench.

Writes to the used event field (vring_used_event) are still unconditional.

Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Ladi Prosek <lprosek@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2016-11-10 16:36:34 +01:00

..

config.c

…

Kconfig

Add virtio-input driver.

2015-03-29 12:13:52 +10:30

Makefile

Add virtio-input driver.

2015-03-29 12:13:52 +10:30

virtio_balloon.c

balloon: check the number of available pages in leak balloon

2016-08-20 18:09:23 +02:00

virtio_input.c

virtio-input: reset device and detach unused during remove

2015-08-06 10:40:35 +03:00

virtio_mmio.c

virtio_mmio: add ACPI probing

2015-09-08 13:30:28 +03:00

virtio_pci_common.c

virtio_pci: fix use after free on release

2016-03-03 15:07:18 -08:00

virtio_pci_common.h

virtio-pci: alloc only resources actually used.

2015-06-24 08:15:09 +02:00

virtio_pci_legacy.c

virtio-pci: alloc only resources actually used.

2015-06-24 08:15:09 +02:00

virtio_pci_modern.c

virtio: virtio 1.0 cs04 spec compliance for reset

2016-04-20 15:42:10 +09:00

virtio_ring.c

virtio_ring: Make interrupt suppression spec compliant

2016-11-10 16:36:34 +01:00

virtio.c

virtio: fix memory leak of virtio ida cache layers

2015-12-07 17:28:01 +02:00