linux-toradex.git/tools/virtio/linux, branch v4.9.16

tools/virtio: fix READ_ONCE()

2017-01-15T12:42:56+00:00

commit 5da889c795b1fbefc9d8f058b54717ab8ab17891 upstream.

The virtio tools implementation of READ_ONCE() has a single parameter called
'var', but erroneously refers to 'val' for its cast, and thus won't work unless
there's a variable of the correct type that happens to be called 'var'.

Fix this with s/var/val/, making READ_ONCE() work as expected regardless.

Fixes: a7c490333df3cff5 ("tools/virtio: use virt_xxx barriers")
Signed-off-by: Mark Rutland 
Cc: Jason Wang 
Cc: Michael S. Tsirkin 
Cc: linux-kernel@vger.kernel.org
Cc: virtualization@lists.linux-foundation.org
Signed-off-by: Michael S. Tsirkin 
Reviewed-by: Cornelia Huck 
Reviewed-by: Jason Wang 
Signed-off-by: Greg Kroah-Hartman

tools/virtio: add dma stubs

2016-08-15T02:05:51+00:00

Fixes build after recent IOMMU-related changes,
mustly by adding more stubs.

Signed-off-by: Michael S. Tsirkin

virtio_ring: Support DMA APIs

2016-03-02T15:01:57+00:00

virtio_ring currently sends the device (usually a hypervisor)
physical addresses of its I/O buffers.  This is okay when DMA
addresses and physical addresses are the same thing, but this isn't
always the case.  For example, this never works on Xen guests, and
it is likely to fail if a physical "virtio" device ever ends up
behind an IOMMU or swiotlb.

The immediate use case for me is to enable virtio on Xen guests.
For that to work, we need vring to support DMA address translation
as well as a corresponding change to virtio_pci or to another
driver.

Signed-off-by: Andy Lutomirski 
Signed-off-by: Michael S. Tsirkin

tools/virtio: use virt_xxx barriers

2016-01-26T08:18:29+00:00

Fix build after API changes.

Reported-by: Kamal Mostafa 
Signed-off-by: Michael S. Tsirkin

tools/virtio: fix byteswap logic

2015-12-07T15:28:10+00:00

commit cf561f0d2eb74574ad9985a2feab134267a9d298 ("virtio: introduce
virtio_is_little_endian() helper") changed byteswap logic to
skip feature bit checks for LE platforms, but didn't
update tools/virtio, so vring_bench started failing.

Update the copy under tools/virtio/ (TODO: find a way to avoid this code
duplication).

Cc: Greg Kurz 
Signed-off-by: Michael S. Tsirkin

tools/virtio: move list macro stubs

2015-12-07T15:28:09+00:00

Makes them more generally available.

Signed-off-by: Michael S. Tsirkin

tools/virtio: fix build after 4.2 changes

2015-09-09T19:03:30+00:00

more stubs, mostly

Signed-off-by: Michael S. Tsirkin

tools/virtio: more stubs

2014-12-15T21:49:19+00:00

As usual, add more stubs to fix test build after main
codebase changes.

Signed-off-by: Michael S. Tsirkin

virtio: add support for 64 bit features.

2014-12-09T10:05:24+00:00

Change u32 to u64, and use BIT_ULL and 1ULL everywhere.

Note: transports are unchanged, and only set low 32 bit.
This guarantees that no transport sets e.g. VERSION_1
by mistake without proper support.

Based on patch by Rusty.

Signed-off-by: Rusty Russell 
Signed-off-by: Cornelia Huck 
Signed-off-by: Michael S. Tsirkin 
Reviewed-by: David Hildenbrand 
Reviewed-by: Cornelia Huck

virtio: use u32, not bitmap for features

2014-12-09T10:05:23+00:00

It seemed like a good idea to use bitmap for features
in struct virtio_device, but it's actually a pain,
and seems to become even more painful when we get more
than 32 feature bits.  Just change it to a u32 for now.

Based on patch by Rusty.

Suggested-by: David Hildenbrand 
Signed-off-by: Rusty Russell 
Signed-off-by: Cornelia Huck 
Signed-off-by: Michael S. Tsirkin 
Reviewed-by: Cornelia Huck