diff options
| author | Michael S. Tsirkin <mst@redhat.com> | 2014-12-14 16:55:44 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2014-12-14 18:21:31 +0200 |
| commit | d71de9ec6ba806104439d3a669befda84757b5af (patch) | |
| tree | 9584862eef22a09b0299a3e5e4a975ddc67e1de9 /crypto | |
| parent | 0dce3771fdd1db03c6f498594a34bba5a6d1f870 (diff) | |
| download | blackbird-op-linux-d71de9ec6ba806104439d3a669befda84757b5af.tar.gz blackbird-op-linux-d71de9ec6ba806104439d3a669befda84757b5af.zip | |
virtio: core support for config generation
virtio 1.0 spec says:
Drivers MUST NOT assume reads from fields greater than 32 bits wide are
atomic, nor are reads from multiple fields: drivers SHOULD read device
configuration space fields like so:
u32 before, after;
do {
before = get_config_generation(device);
// read config entry/entries.
after = get_config_generation(device);
} while (after != before);
Do exactly this, for transports that support it.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'crypto')
0 files changed, 0 insertions, 0 deletions
