Le 10/02/2022 à 13:44, Anders Roxell a écrit : > Building tinyconfig with gcc (Debian 11.2.0-16) and assembler (Debian > 2.37.90.20220207) the following build error shows up: > > {standard input}: Assembler messages: > {standard input}:2088: Error: unrecognized opcode: `ptesync' > make[3]: *** [/builds/linux/scripts/Makefile.build:287: arch/powerpc/lib/sstep.o] Error 1 > > Re-add the ifdef __powerpc64__ around the 'ptesync' in function > 'emulate_update_regs()' to like it is in 'analyse_instr()'. Since it looks like > it got dropped inadvertently by commit 3cdfcbfd32b9 ("powerpc: Change > analyse_instr so it doesn't modify *regs"). > > Cc: stable@xxxxxxxxxxxxxxx # v4.14+ > Fixes: 3cdfcbfd32b9 ("powerpc: Change analyse_instr so it doesn't modify *regs") > Suggested-by: Arnd Bergmann <arnd@xxxxxxxx> > Signed-off-by: Anders Roxell <anders.roxell@xxxxxxxxxx> > --- > arch/powerpc/lib/sstep.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c > index a94b0cd0bdc5..d23772f91a36 100644 > --- a/arch/powerpc/lib/sstep.c > +++ b/arch/powerpc/lib/sstep.c > @@ -3264,12 +3264,14 @@ void emulate_update_regs(struct pt_regs *regs, struct instruction_op *op) > case BARRIER_EIEIO: > eieio(); > break; > +#ifdef __powerpc64__ Should be CONFIG_PPC64 instead of __powerpc64__ > case BARRIER_LWSYNC: > asm volatile("lwsync" : : : "memory"); > break; > case BARRIER_PTESYNC: > asm volatile("ptesync" : : : "memory"); > break; > +#endif > } > break; >