On 5/3/22 03:33, Nicholas Piggin wrote:
eieio does not provide ordering between stores to CI memory and stores to cacheable memory so it can't be used as a general ST_ST barrier.Signed-of-by: Nicholas Piggin <npig...@gmail.com> --- tcg/ppc/tcg-target.c.inc | 2 -- 1 file changed, 2 deletions(-) diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc index cfcd121f9c..3ff845d063 100644 --- a/tcg/ppc/tcg-target.c.inc +++ b/tcg/ppc/tcg-target.c.inc @@ -1836,8 +1836,6 @@ static void tcg_out_mb(TCGContext *s, TCGArg a0) a0 &= TCG_MO_ALL; if (a0 == TCG_MO_LD_LD) { insn = LWSYNC; - } else if (a0 == TCG_MO_ST_ST) { - insn = EIEIO; } tcg_out32(s, insn); }
Certainly matches the comment from patch 1. Reviewed-by: Richard Henderson <richard.hender...@linaro.org> r~
