On Fri, Jun 04, 2010 at 12:14:13PM -0700, Richard Henderson wrote: > Before gcc 4.2, __builtin___clear_cache doesn't exist, and > afterward the gcc s390 backend implements it as nothing.
Does it means that instruction and data caches are coherent on s390? > Signed-off-by: Richard Henderson <r...@twiddle.net> > --- > tcg/s390/tcg-target.h | 5 ----- > 1 files changed, 0 insertions(+), 5 deletions(-) > > diff --git a/tcg/s390/tcg-target.h b/tcg/s390/tcg-target.h > index d8a2955..d7fe0c7 100644 > --- a/tcg/s390/tcg-target.h > +++ b/tcg/s390/tcg-target.h > @@ -94,9 +94,4 @@ enum { > > static inline void flush_icache_range(unsigned long start, unsigned long > stop) > { > -#if QEMU_GNUC_PREREQ(4, 1) > - __builtin___clear_cache((char *) start, (char *) stop); > -#else > -#error not implemented > -#endif > } > -- > 1.7.0.1 > > > -- Aurelien Jarno GPG: 1024D/F1BCDB73 aurel...@aurel32.net http://www.aurel32.net