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Subject: Re: [PATCH 1/1] virtio-ccw: clarifications
Cornelia Huck <cornelia.huck@de.ibm.com> writes: > - further qualify bit numbering > - specify summary indicator contents > - drop early printk spec; it is only a hack that was never used upstream > > Reported-by: Thomas Huth <thuth@linux.vnet.ibm.com> > Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> OK, thanks. Because we have to track feedback, I've been recording them inside the SVN tree. I've just split it out into a feedback/ directory, and your patch is in feedback/2.txt. We'll decide on each one at the next meeting (I expect we'll just apply them). Thanks, Rusty. > --- > content.tex | 10 +++------- > 1 file changed, 3 insertions(+), 7 deletions(-) > > diff --git a/content.tex b/content.tex > index 803615d..0a94c07 100644 > --- a/content.tex > +++ b/content.tex > @@ -2174,7 +2174,8 @@ summary_indicator contains the guest address of the 8 bit summary > indicator. > indicator contains the guest address of an area wherin the indicators > for the devices are contained, starting at bit_nr, one bit per > -virtqueue of the device. Bit numbers start at the left. > +virtqueue of the device. Bit numbers start at the left, i.e. the most > +significant bit in the first byte is assigned the bit number 0. > isc contains the I/O interruption subclass to be used for the adapter > I/O interrupt. It may be different from the isc used by the proxy > virtio-ccw device's subchannel. > @@ -2224,7 +2225,7 @@ host->guest notification about virtqueue activity. > > For notifying the driver of virtqueue buffers, the device sets the > bit in the guest-provided indicator area at the corresponding offset. > -The guest-provided summary indicator is also set. An adapter I/O > +The guest-provided summary indicator is set to 0x01. An adapter I/O > interrupt for the corresponding interruption subclass is generated. > The device SHOULD only generate an adapter I/O interrupt if the > summary indicator had not been set prior to notification. The driver > @@ -2273,11 +2274,6 @@ should be passed in GPR4 for the next notification: > info->cookie); > \end{lstlisting} > > -\subsubsection{Early printk for Virtio Consoles}\label{sec:Virtio Transport Options / Virtio over channel I/O / Device Operation / Early printk for Virtio Consoles} > - > -For the early printk mechanism, diagnose 0x500 with subcode 0 is > -used. > - > \subsubsection{Resetting Devices}\label{sec:Virtio Transport Options / Virtio over channel I/O / Device Operation / Resetting Devices} > > In order to reset a device, a driver sends the > -- > 1.7.9.5
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