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@vger.kernel.org # v4.14+ Fixes: 3cdfcbfd32b9 ("powerpc: Change analyse_instr so it doesn't modify *regs") Suggested-by: Arnd Bergmann arnd@arndb.de Signed-off-by: Anders Roxell anders.roxell@linaro.org
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;