[PATCH v5 4/7] migration/multifd: add qpl compression method

[Yuan Liu]

add the Query Processing Library (QPL) compression method

Although both qpl and zlib support deflate compression, qpl will
only use the In-Memory Analytics Accelerator(IAA) for compression
and decompression, and IAA is not compatible with the Zlib in
migration, so qpl is used as a new compression method for migration.

How to enable qpl compression during migration:
migrate_set_parameter multifd-compression qpl

The qpl only supports one compression level, there is no qpl
compression level parameter added, users do not need to specify
the qpl compression level.

Signed-off-by: Yuan Liu <yuan1.liu@intel.com>
Reviewed-by: Nanhai Zou <nanhai.zou@intel.com>
---
 hw/core/qdev-properties-system.c |  2 +-
 migration/meson.build            |  1 +
 migration/multifd-qpl.c          | 20 ++++++++++++++++++++
 migration/multifd.h              |  1 +
 qapi/migration.json              |  7 ++++++-
 5 files changed, 29 insertions(+), 2 deletions(-)
 create mode 100644 migration/multifd-qpl.c

diff --git a/hw/core/qdev-properties-system.c b/hw/core/qdev-properties-system.c
index d79d6f4b53..6ccd7224f6 100644
--- a/hw/core/qdev-properties-system.c
+++ b/hw/core/qdev-properties-system.c
@@ -659,7 +659,7 @@ const PropertyInfo qdev_prop_fdc_drive_type = {
 const PropertyInfo qdev_prop_multifd_compression = {
     .name = "MultiFDCompression",
     .description = "multifd_compression values, "
-                   "none/zlib/zstd",
+                   "none/zlib/zstd/qpl",
     .enum_table = &MultiFDCompression_lookup,
     .get = qdev_propinfo_get_enum,
     .set = qdev_propinfo_set_enum,
diff --git a/migration/meson.build b/migration/meson.build
index 1eeb915ff6..cb177de1d2 100644
--- a/migration/meson.build
+++ b/migration/meson.build
@@ -41,6 +41,7 @@ if get_option('live_block_migration').allowed()
   system_ss.add(files('block.c'))
 endif
 system_ss.add(when: zstd, if_true: files('multifd-zstd.c'))
+system_ss.add(when: qpl, if_true: files('multifd-qpl.c'))
 
 specific_ss.add(when: 'CONFIG_SYSTEM_ONLY',
                 if_true: files('ram.c',
diff --git a/migration/multifd-qpl.c b/migration/multifd-qpl.c
new file mode 100644
index 0000000000..056a68a060
--- /dev/null
+++ b/migration/multifd-qpl.c
@@ -0,0 +1,20 @@
+/*
+ * Multifd qpl compression accelerator implementation
+ *
+ * Copyright (c) 2023 Intel Corporation
+ *
+ * Authors:
+ *  Yuan Liu<yuan1.liu@intel.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+#include "qemu/osdep.h"
+#include "qemu/module.h"
+
+static void multifd_qpl_register(void)
+{
+    /* noop */
+}
+
+migration_init(multifd_qpl_register);
diff --git a/migration/multifd.h b/migration/multifd.h
index c9d9b09239..5b7d9b15f8 100644
--- a/migration/multifd.h
+++ b/migration/multifd.h
@@ -40,6 +40,7 @@ MultiFDRecvData *multifd_get_recv_data(void);
 #define MULTIFD_FLAG_NOCOMP (0 << 1)
 #define MULTIFD_FLAG_ZLIB (1 << 1)
 #define MULTIFD_FLAG_ZSTD (2 << 1)
+#define MULTIFD_FLAG_QPL (4 << 1)
 
 /* This value needs to be a multiple of qemu_target_page_size() */
 #define MULTIFD_PACKET_SIZE (512 * 1024)
diff --git a/qapi/migration.json b/qapi/migration.json
index aa1b39bce1..dceb35db5b 100644
--- a/qapi/migration.json
+++ b/qapi/migration.json
@@ -629,11 +629,16 @@
 #
 # @zstd: use zstd compression method.
 #
+# @qpl: use qpl compression method. Query Processing Library(qpl) is based on
+#       the deflate compression algorithm and use the Intel In-Memory Analytics
+#       Accelerator(IAA) accelerated compression and decompression. (Since 9.0)
+#
 # Since: 5.0
 ##
 { 'enum': 'MultiFDCompression',
   'data': [ 'none', 'zlib',
-            { 'name': 'zstd', 'if': 'CONFIG_ZSTD' } ] }
+            { 'name': 'zstd', 'if': 'CONFIG_ZSTD' },
+            { 'name': 'qpl', 'if': 'CONFIG_QPL' } ] }
 
 ##
 # @MigMode:
-- 
2.39.3