prov/cxi: Depreciate FI_CXI_WEAK_FENCE

With CXI provider ordering updated, FI_CXI_WEAK_FENCE is no longer needed. Signed-off-by: Ian Ziemba <ian.ziemba@hpe.com>
ofiwg · Nov 25, 2024 · cf257c1 · cf257c1
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diff --git a/man/fi_cxi.7.md b/man/fi_cxi.7.md
@@ -1522,11 +1522,6 @@ if (ret)
     error;
 ```
 
-When an endpoint does not support FI_FENCE (e.g. optimized MR), a provider
-specific transmit flag, FI_CXI_WEAK_FENCE, may be specified on an alias EP
-to issue a FENCE operation to create a data ordering point for the alias.
-This is supported for one-sided operations only.
-
 Alias EP must be closed prior to closing the original EP.
 
 ## PCIe Atomics

diff --git a/prov/cxi/include/fi_cxi_ext.h b/prov/cxi/include/fi_cxi_ext.h
@@ -118,11 +118,10 @@ enum {
  */
 #define FI_CXI_UNRELIABLE (1ULL << 61)
 
-/*
- * Request a provider specific weak FENCE operation to facilitate an
- * EP alias ordering point, when the original EP utilizes PCIe RO=1.
- */
-#define FI_CXI_WEAK_FENCE (1ULL << 63)
+/* Depreciated. */
+#define FI_CXI_WEAK_FENCE \
+	_Pragma ("GCC warning \"'FI_CXI_WEAK_FENCE' macro is deprecated\"") \
+	(1ULL << 63)
 
 /*
  * Used in conjunction with the deferred work queue API. If a deferred work