diff options
| author | cornelia.huck <cornelia.huck@0c8fb4dd-22a2-4bb5-bc14-6c75a5f43652> | 2013-12-12 10:08:47 +0000 |
|---|---|---|
| committer | cornelia.huck <cornelia.huck@0c8fb4dd-22a2-4bb5-bc14-6c75a5f43652> | 2013-12-12 10:08:47 +0000 |
| commit | adc597e5068d28dfc24093c310678188d859ea5f (patch) | |
| tree | ef6e80ff345ebb4799f6396c07aecaf3195a263b | |
| parent | 7f8b3f78e7d87dc8902dd5d209f25f5d4cc2452f (diff) | |
ccw: clarify passing of subchannel id
Make clear that the upper half of the register must be ignored, just
like normal I/O instructions do.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
git-svn-id: https://tools.oasis-open.org/version-control/svn/virtio@172 0c8fb4dd-22a2-4bb5-bc14-6c75a5f43652
| -rw-r--r-- | content.tex | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/content.tex b/content.tex index b0a0ab7..b6092b6 100644 --- a/content.tex +++ b/content.tex @@ -2243,6 +2243,10 @@ GPR & Input Value & Output Value \\ \hline \end{tabular} +The device MUST ignore bits 0-31 (counting from the left) of GPR2. +This aligns passing the subchannel ID with the way it is passed +for the existing I/O instructions. + Host cookie is an optional per-virtqueue 64 bit value that can be used by the hypervisor to speed up the notification execution. For each notification, the output value is returned in GPR2 and |