On Wed, 20 Sep 2017 19:23:14 +0200 Halil Pasic <pa...@linux.vnet.ibm.com> wrote:
> The problem is, that the current implementation places unrealistic and > arbitrary constraints on the length of writes to the device (that is the > outbound requests), by asserting ccw.count being such that that even the > worst case escaped payload will fit an more or less arbitrary sized > buffer. Actually on protocol level there is nothing to justify such > a limitation. > > Another strange thing is the return value which more or less reflects > the size (written) after escaping instead of before escaping. This > is strange, because this return value is used to calculate SCSW.count. Didn't the Linux driver care about the count? > > Let us teach 3270 how to deal with arbitrary long writes. > > Signed-off-by: Halil Pasic <pa...@linux.vnet.ibm.com> > Acked-by: Christian Borntraeger <borntrae...@de.ibm.com> > Reviewed-by: Dong Jia Shi <bjsdj...@linux.vnet.ibm.com> > Reported-by: Jason J . Herne <jjhe...@linux.vnet.ibm.com> > Tested-by: Jason J . Herne <jjhe...@linux.vnet.ibm.com> > --- > hw/char/terminal3270.c | 30 ++++++++++++++++++------------ > 1 file changed, 18 insertions(+), 12 deletions(-) Looks good.
