This patch fixes not included in original patch release note
Fixes: 6cde900bd59d ("common/qat: remove tail write coalescing")
Signed-off-by: Arek Kusztal <arkadiuszx.kusz...@intel.com>
---
doc/guides/rel_notes/release_20_02.rst | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/doc/guides/rel_notes/release_20_02.rst
b/doc/guides/rel_notes/release_20_02.rst
index d19a7f5..661969c 100644
--- a/doc/guides/rel_notes/release_20_02.rst
+++ b/doc/guides/rel_notes/release_20_02.rst
@@ -184,6 +184,15 @@ Removed Items
the Technical Board decided to disable all the kernel modules
by default from 20.02 version.
+* **Removed coalescing feature from Intel QuickAssist Technology (QAT) PMD.**
+
+ The internal tail write coalescing feature was removed as not compatible with
+ dual-thread feature. It was replaced with a threshold feature. At busy times
+ if only a small number of packets can be enqueued, each enqueue causes
+ an expensive MMIO write. These MMIO write occurrences can be optimised by
using
+ the new threshold parameter on process start. Please see qat documentation
for
+ more details.
+
API Changes
-----------
--
2.1.0
