Robin Murphy 776050a9b5 virtio_mmio: Set DMA masks appropriately ...

commit f7f6634d23 upstream.

Once DMA API usage is enabled, it becomes apparent that virtio-mmio is
inadvertently relying on the default 32-bit DMA mask, which leads to
problems like rapidly exhausting SWIOTLB bounce buffers.

Ensure that we set the appropriate 64-bit DMA mask whenever possible,
with the coherent mask suitably limited for the legacy vring as per
a0be1db430 ("virtio_pci: Limit DMA mask to 44 bits for legacy virtio
devices").

Cc: Andy Lutomirski <luto@kernel.org>
Cc: Michael S. Tsirkin <mst@redhat.com>
Reported-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Fixes: b42111382f ("virtio_mmio: Use the DMA API if enabled")
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2017-02-01 08:33:13 +01:00

..

Kconfig

virtio_ring: Support DMA APIs

2016-03-02 17:01:57 +02:00

Makefile

Add virtio-input driver.

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

virtio_balloon.c

virtio: update balloon size in balloon "probe"

2016-10-31 00:21:41 +02:00

virtio_input.c

virtio: make find_vqs() checkpatch.pl-friendly

2016-01-12 20:47:06 +02:00

virtio_mmio.c

virtio_mmio: Set DMA masks appropriately

2017-02-01 08:33:13 +01:00

virtio_pci_common.c

Merge tag 'pci-v4.6-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

2016-03-16 14:45:55 -07:00

virtio_pci_common.h

virtio_pci: Use the DMA API if enabled

2016-03-02 17:01:58 +02:00

virtio_pci_legacy.c

virtio_pci: Limit DMA mask to 44 bits for legacy virtio devices

2016-10-31 00:21:39 +02:00

virtio_pci_modern.c

virtio: virtio 1.0 cs04 spec compliance for reset

2016-04-07 15:16:39 +03:00

virtio_ring.c

vring: Force use of DMA API for ARM-based systems with legacy devices

2017-02-01 08:33:05 +01:00

virtio.c

virtio: fix memory leak of virtio ida cache layers

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