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[RFC PATCH 2/4] tcg/ppc: ST_ST memory ordering is not provided with eiei
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From: |
Nicholas Piggin |
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Subject: |
[RFC PATCH 2/4] tcg/ppc: ST_ST memory ordering is not provided with eieio |
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Date: |
Tue, 3 May 2022 20:33:32 +1000 |
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 <npiggin@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);
}
--
2.35.1