On Tue, Dec 22 2009, Paul Mundt wrote: > On Tue, Dec 22, 2009 at 05:47:46AM +0900, Nobuhiro Iwamatsu wrote: > > +#define nop __asm__ __volatile__ ("nop": : :"memory") > > +#define read_barrier() __asm__ __volatile__ (" " : : : "memory") > > +#define write_barrier() __asm__ __volatile__ (" " : : : "memory") > > This is true for SH-4, but not for SH-4A, which wants a synco for these. > See how the kernel does it. > > The sooner we stop pretending like SH-4A and SH-4 are the same thing the > sooner we stop introducing subtle bugs all over the place.
Does sh-a4 support the synco instruction, or will it sigill? -- Jens Axboe -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org