[dpdk-dev] [PATCH 2/2] memzone: clarify support for zero-length memzones
Anatoly Burakov
anatoly.burakov at intel.com
Fri May 25 15:39:45 CEST 2018
Currently, memzone allocation with length set to 0 that are also
IOVA-contiguous is not supported. Document this limitation.
Signed-off-by: Anatoly Burakov <anatoly.burakov at intel.com>
---
lib/librte_eal/common/include/rte_memzone.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/lib/librte_eal/common/include/rte_memzone.h b/lib/librte_eal/common/include/rte_memzone.h
index a4c9bd6..ef370fa 100644
--- a/lib/librte_eal/common/include/rte_memzone.h
+++ b/lib/librte_eal/common/include/rte_memzone.h
@@ -81,6 +81,9 @@ struct rte_memzone {
* memzones from memory that is already available. It will not trigger any
* new allocations.
*
+ * @note Reserving IOVA-contiguous memzones with len set to 0 is not currently
+ * supported.
+ *
* @param name
* The name of the memzone. If it already exists, the function will
* fail and return NULL.
@@ -138,6 +141,9 @@ const struct rte_memzone *rte_memzone_reserve(const char *name,
* memzones from memory that is already available. It will not trigger any
* new allocations.
*
+ * @note Reserving IOVA-contiguous memzones with len set to 0 is not currently
+ * supported.
+ *
* @param name
* The name of the memzone. If it already exists, the function will
* fail and return NULL.
@@ -200,6 +206,9 @@ const struct rte_memzone *rte_memzone_reserve_aligned(const char *name,
* memzones from memory that is already available. It will not trigger any
* new allocations.
*
+ * @note Reserving IOVA-contiguous memzones with len set to 0 is not currently
+ * supported.
+ *
* @param name
* The name of the memzone. If it already exists, the function will
* fail and return NULL.
--
2.7.4
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