On Tue, Jan 11, 2022 at 11:00:03AM +0100, Janis Schoetterl-Glausch wrote: > From: Nico Boehr <nrb@xxxxxxxxxxxxx> > > Previously, we've used magic values to specify the OAC > (operand-access control) for mvcos. > > Instead we introduce a bit field for it. > > When using a bit field, we cannot use an immediate value with K > constraint anymore, since GCC older than 10 doesn't recognize > the bit field union as a compile time constant. > To make things work with older compilers, > load the OAC value through a register. > > Bloat-o-meter reports a slight increase in kernel size with this change: > Total: Before=15692135, After=15693015, chg +0.01% > > Signed-off-by: Nico Boehr <nrb@xxxxxxxxxxxxx> > Co-developed-by: Janis Schoetterl-Glausch <scgl@xxxxxxxxxxxxx> > Signed-off-by: Janis Schoetterl-Glausch <scgl@xxxxxxxxxxxxx> > --- > arch/s390/include/asm/uaccess.h | 120 ++++++++++++++++++++------------ > arch/s390/lib/uaccess.c | 24 +++++-- > 2 files changed, 95 insertions(+), 49 deletions(-) Applied with a couple of indentation + whitespace fixes. Thanks!
