On Fri, May 04, 2018 at 09:37:20AM +0200, Jiri Slaby wrote: > On 04/27/2018, 03:58 PM, Greg Kroah-Hartman wrote: > > 4.4-stable review patch. If anyone has any objections, please let me know. > > > > ------------------ > > > > From: Martin Schwidefsky <schwidefsky@xxxxxxxxxx> > > > > > > [ Upstream commit cf1489984641369611556bf00c48f945c77bcf02 ] > > > > To be able to switch off specific CPU alternatives with kernel parameters > > make a copy of the facility bit mask provided by STFLE and use the copy > > for the decision to apply an alternative. > ... > > --- a/arch/s390/include/asm/facility.h > > +++ b/arch/s390/include/asm/facility.h > > @@ -13,6 +13,24 @@ > > > > #define MAX_FACILITY_BIT (256*8) /* stfle_fac_list has 256 bytes */ > > I wonder if the below (plus __test_facility) is correct in 4.4, given > MAX_FACILITY_BIT is defined as such and not as sizeof(stfle_fac_list * > 8) as in upstream? I'm going to defer to Marin here, as he did the backport... Martin? thanks, greg k-h
