diff options
| author | mstsirkin <mstsirkin@0c8fb4dd-22a2-4bb5-bc14-6c75a5f43652> | 2014-03-02 21:34:28 +0000 |
|---|---|---|
| committer | mstsirkin <mstsirkin@0c8fb4dd-22a2-4bb5-bc14-6c75a5f43652> | 2014-03-02 21:34:28 +0000 |
| commit | f0b00693e76a3d90028c337e9f5546ab949c2ca3 (patch) | |
| tree | 2cba106c3b2cd86ff2b9e1163e66c9caab44b7db | |
| parent | 61e96946bb276abd485cf4f605f9f8a6efc3e005 (diff) | |
Legacy Interface: Device Configuration Space
Change accepted on VIRTIO TC Meeting, 3 December 2013
legacy has no generation field.
add SHOULD statement to document multi-byte field
access rules.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
git-svn-id: https://tools.oasis-open.org/version-control/svn/virtio@290 0c8fb4dd-22a2-4bb5-bc14-6c75a5f43652
| -rw-r--r-- | content.tex | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/content.tex b/content.tex index 744ba34..cc0f363 100644 --- a/content.tex +++ b/content.tex @@ -236,7 +236,11 @@ The correct endian-ness is documented explicitly for each device. Legacy devices did not have a configuration generation field, thus are susceptible to race conditions if configuration is updated. This -effects the block capacity and network mac fields; best practice is to +effects the block \field{capacity} (see \ref{sec:Device Types / +Block Device / Feature bits / Device configuration layout}) and +network \field{mac} (see \ref{sec:Device Types / Network Device / +Device configuration layout}) fields; +when using the legacy interface, drivers SHOULD read these fields multiple times until two reads generate a consistent result. |