Hi! On Fri, Sep 12, 2025 at 10:37:34AM +0200, Christophe Leroy wrote: > BEGIN_FTR_SECTION > + lwarx r0,0,r1 > +END_FTR_SECTION_IFSET(CPU_FTR_NEED_PAIRED_STWCX) > stwcx. r0,0,r1 /* to clear the reservation */ > -FTR_SECTION_ELSE > - lwarx r0,0,r1 > -ALT_FTR_SECTION_END_IFCLR(CPU_FTR_STCX_CHECKS_ADDRESS)
Hrm. So this is for V'ger (mpc7450)? What kind of issues does that old thing have with unpaired larx/stcx., some performance impact? The extra "dummy" larx has serious performance impact itself, on most implementations (also on all newer stuff). Segher
