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 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 -- 1.9.3 -- 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/
