On 01/28/2015 11:11 PM, Dave Airlie wrote: > These two copy to/from VGA memory, however on the Silicon > Motion SMI750 VGA card on a 64-bit system cause console corruption. > > This is due to the hw being buggy and not handling a 64-bit transaction > correctly. > > We could try and create a 32-bit version of these routines, > but I'm not sure the optimisation is worth much today. > > Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1132826
Restricted link. > Tested-by: Huawei engineering. > Signed-off-by: Dave Airlie <[email protected]> > --- > > Linus, this came up a while back I finally got some confirmation > that it fixes those servers. > > include/linux/vt_buffer.h | 4 ---- > 1 file changed, 4 deletions(-) > > diff --git a/include/linux/vt_buffer.h b/include/linux/vt_buffer.h > index 057db7d..f38c10b 100644 > --- a/include/linux/vt_buffer.h > +++ b/include/linux/vt_buffer.h > @@ -21,10 +21,6 @@ > #ifndef VT_BUF_HAVE_RW > #define scr_writew(val, addr) (*(addr) = (val)) > #define scr_readw(addr) (*(addr)) > -#define scr_memcpyw(d, s, c) memcpy(d, s, c) > -#define scr_memmovew(d, s, c) memmove(d, s, c) > -#define VT_BUF_HAVE_MEMCPYW > -#define VT_BUF_HAVE_MEMMOVEW > #endif > > #ifndef VT_BUF_HAVE_MEMSETW > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
