提交 019408f9 编写于 作者: M Mikulas Patocka 提交者: David S. Miller

sparc64: Fill a missing delay slot.

If the code were already aligned to 64 bytes, wr instruction would be executed
twice --- once in delay slot and once in the jump target.
Signed-off-by: NMikulas Patocka <mpatocka@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 0f58189d
......@@ -106,6 +106,7 @@ do { __asm__ __volatile__("ba,pt %%xcc, 1f\n\t" \
*/
#define write_pic(__p) \
__asm__ __volatile__("ba,pt %%xcc, 99f\n\t" \
" nop\n\t" \
".align 64\n" \
"99:wr %0, 0x0, %%pic\n\t" \
"rd %%pic, %%g0" : : "r" (__p))
......
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