* [PATCH] Some virtio-ccw clarifications.
@ 2012-10-29 13:02 Cornelia Huck
2012-10-29 13:02 ` [PATCH] virtio-ccw: Clarifications Cornelia Huck
0 siblings, 1 reply; 3+ messages in thread
From: Cornelia Huck @ 2012-10-29 13:02 UTC (permalink / raw)
To: Rusty Russell; +Cc: virtualization
Hi Rusty,
here are some clarifications for virtio-ccw: feature bit endianess
and how setting the indicator location works (with the channel
data address only being 32 bit wide).
Cornelia Huck (1):
virtio-ccw: Clarifications.
virtio-spec.lyx | 9 +++++----
1 files changed, 5 insertions(+), 4 deletions(-)
--
1.7.5.4
^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH] virtio-ccw: Clarifications.
2012-10-29 13:02 [PATCH] Some virtio-ccw clarifications Cornelia Huck
@ 2012-10-29 13:02 ` Cornelia Huck
2012-10-31 1:11 ` Rusty Russell
0 siblings, 1 reply; 3+ messages in thread
From: Cornelia Huck @ 2012-10-29 13:02 UTC (permalink / raw)
To: Rusty Russell; +Cc: virtualization
Clarify how indicator location is communicated and that the
feature bits are little-endian.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
---
virtio-spec.lyx | 9 +++++----
1 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/virtio-spec.lyx b/virtio-spec.lyx
index b0532ef..83f2771 100644
--- a/virtio-spec.lyx
+++ b/virtio-spec.lyx
@@ -9973,9 +9973,10 @@ Handling Device Features
\begin_layout Standard
-\change_inserted -385801441 1345027079
+\change_inserted -385801441 1351067713
Feature bits are arranged in an array of 32 bit values, making for a total
of 8192 feature bits.
+ Feature bits are in little-endian byte order.
\end_layout
\begin_layout Standard
@@ -10112,10 +10113,10 @@ Setting Up Indicators
\begin_layout Standard
-\change_inserted -385801441 1347015710
+\change_inserted -385801441 1351067651
To communicate the location of the indicator bits for host->guest notification,
- the guest uses the CCW_CMD_SET_IND command which sends the guest address
- of the indicators in a 64 bit value.
+ the guest uses the CCW_CMD_SET_IND command, pointing to a location containing
+ the guest address of the indicators in a 64 bit value.
\end_layout
\begin_layout Standard
--
1.7.5.4
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2012-10-29 13:02 [PATCH] Some virtio-ccw clarifications Cornelia Huck
2012-10-29 13:02 ` [PATCH] virtio-ccw: Clarifications Cornelia Huck
2012-10-31 1:11 ` Rusty Russell
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