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
The qpl method 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....@intel.com>
Reviewed-by: Nanhai Zou <nanhai....@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 f76b1ba328..1d432d5328 100644
--- a/migration/meson.build
+++ b/migration/meson.build
@@ -43,6 +43,7 @@ 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....@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 8c65b90328..854e8609bd 100644
--- a/qapi/migration.json
+++ b/qapi/migration.json
@@ -628,11 +628,16 @@
#
# @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 9.1)
+#
# Since: 5.0
##
{ 'enum': 'MultiFDCompression',
'data': [ 'none', 'zlib',
- { 'name': 'zstd', 'if': 'CONFIG_ZSTD' } ] }
+ { 'name': 'zstd', 'if': 'CONFIG_ZSTD' },
+ { 'name': 'qpl', 'if': 'CONFIG_QPL' } ] }
##
# @MigMode:
--
2.39.3
