migration/multifd: add qpl compression method

add the Query Processing Library (QPL) compression method

Introduce the qpl as a new multifd migration compression method, it can
use In-Memory Analytics Accelerator(IAA) to accelerate compression and
decompression, which can not only reduce network bandwidth requirement
but also reduce host compression and decompression CPU overhead.

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

There is no qpl compression level parameter added since it only supports
level one, 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>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
[fixed docs spacing in migration.json]
Signed-off-by: Fabiano Rosas <farosas@suse.de>

diff --git a/hw/core/qdev-properties-system.c b/hw/core/qdev-properties-system.c
index d79d6f4b534c6c53aff2a7f1aec7aa8224e2a38c..6ccd7224f6a86b2331ae8f45976772ff1da92546 100644 (file)
--- 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 bdc3244bce084adf648892d57ab8213dffd99c11..5f146fe8a98f276459cfabc0a4a467261525e9a4 100644 (file)
--- a/migration/meson.build
+++ b/migration/meson.build
@@ -39,6 +39,7 @@ endif
 
 system_ss.add(when: rdma, if_true: files('rdma.c'))
 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 (file)
index 0000000..056a68a
--- /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 c9d9b09239534a19d6b81b743e057a6b01badcc2..5b7d9b15f85eb20e3097b35b204c199a54f0430b 100644 (file)
--- 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 a351fd37143410bf0ff9ca06c7a64c582fedcece..a35d0b5b83213cd0f7224982bdabc5cc24f08d7d 100644 (file)
--- a/qapi/migration.json
+++ b/qapi/migration.json
@@ -554,11 +554,17 @@
 #
 # @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 9.1)
+#
 # Since: 5.0
 ##
 { 'enum': 'MultiFDCompression',
   'data': [ 'none', 'zlib',
-            { 'name': 'zstd', 'if': 'CONFIG_ZSTD' } ] }
+            { 'name': 'zstd', 'if': 'CONFIG_ZSTD' },
+            { 'name': 'qpl', 'if': 'CONFIG_QPL' } ] }
 
 ##
 # @MigMode: