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[54.152.246.50]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-6b5fb7e316esm4972936d6.30.2024.07.05.11.29.18 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Fri, 05 Jul 2024 11:29:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1720204162; x=1720808962; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=9DurkwrUL923+nQ+sm0eRKDreSAPJ+7okeaR/Wthn40=; b=aMMokBz002K5z4wU/PddqcdvB2L4zoZBdzZ52nWMrWvpSs9s4HmwItIic0+e9dazX1 GM+AwamEB99YFKBAGyN4jwxSUTb+E7/SkqhzIkgv3OFYDE7UrQg1E2gld+Chxn8XS60R UOQ4UxJ9NIKeXolJL32Qn38fTZjwTGrb3lbT+sMieQv0Z1iltH+6w4VYZwf7GW7HbPBE V5wERcDIrHBvCPHw5PWc+XJ34YVYFSkA5knNKaeaDiRIyb+sFdy7efaPRnhPjYjL0PPv WR1QG25AnPCHyrQF/VZBE2ED+puChWzf7UbzyvjRQ3ybNiO/xfpq5DOKINQqcO63Ih0e TYuw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720204162; x=1720808962; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=9DurkwrUL923+nQ+sm0eRKDreSAPJ+7okeaR/Wthn40=; b=P872JL4E95YfDMoSMHlrl7o/gQCiQWITshGyjE0lQ5nMT9vuFJYHSOW4q/+yfz7H9T PNlFyZPMBxLwhGavKw9IOjQODUTKS46q5V0YHOJKaxbzTvM8cgYgGoRJ3jFb06IjK7Fg K7p4e+F2g1200GihbQK1VNG02vx7Tf+spcVvXBv8Fr2cz1wRPDFOtiCzXfEPUlEVOn+D RFirHWTgD+vuUa0q4o9v85kacS8+8eL3okBuyCN71jYNq6aR3efT84Dfuda7hl7vkyGn LtBJ/YjWUAL5jrLaTYHRqZ0f2ksgRhjjlfboCQMUtvY8e0jbAIS3ReE29d9ZcQDn+Xjx AmkQ== X-Forwarded-Encrypted: i=1; AJvYcCWZD1lc9WcahwDhxRs6aAwy0h7WflYKNpmRyoOn3ZmJIkH7BxofgzsqK2HLI1SCP2N7Yf9sPDw2l3fqrm1rml61RyVFizU= X-Gm-Message-State: AOJu0YxJ7oWY/B1ASP7ThA7n1zU/eNzcVcG5lD+SGzWMwb5PG2T1LCun zCENaU2jEdJGCUV/skopKiKWM4hM/Tt6NC9OcQQYzZepDLxoQDZvzEAIryn6Zxg= X-Google-Smtp-Source: AGHT+IEiz/x8KmS0Olk7V6bCtGA1AkTmQKRkgRUHLMYgSE8Nk9IL5/pidxF/iGmSasrnWDCS7zlL+g== X-Received: by 2002:a05:6214:5089:b0:6b4:fd84:1cdf with SMTP id 6a1803df08f44-6b5ecfa1483mr62273396d6.18.1720204162370; Fri, 05 Jul 2024 11:29:22 -0700 (PDT) From: Yichen Wang To: Paolo Bonzini , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Eduardo Habkost , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Thomas Huth , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Peter Xu , Fabiano Rosas , Eric Blake , Markus Armbruster , Laurent Vivier , qemu-devel@nongnu.org Cc: "Hao Xiang" , "Liu, Yuan1" , "Zou, Nanhai" , "Ho-Ren (Jack) Chuang" , "Yichen Wang" , Bryan Zhang Subject: [PATCH v4 3/4] migration: Introduce 'qatzip' compression method Date: Fri, 5 Jul 2024 11:29:00 -0700 Message-Id: <20240705182901.48948-4-yichen.wang@bytedance.com> X-Mailer: git-send-email 2.39.3 (Apple Git-146) In-Reply-To: <20240705182901.48948-1-yichen.wang@bytedance.com> References: <20240705182901.48948-1-yichen.wang@bytedance.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::f34; envelope-from=yichen.wang@bytedance.com; helo=mail-qv1-xf34.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer2=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer2=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @bytedance.com) X-ZM-MESSAGEID: 1720204207778100002 Content-Type: text/plain; charset="utf-8" From: Bryan Zhang Adds support for 'qatzip' as an option for the multifd compression method parameter, and implements using QAT for 'qatzip' compression and decompression. Signed-off-by: Bryan Zhang Signed-off-by: Hao Xiang Signed-off-by: Yichen Wang --- hw/core/qdev-properties-system.c | 6 +- migration/meson.build | 1 + migration/multifd-qatzip.c | 391 +++++++++++++++++++++++++++++++ migration/multifd.h | 5 +- qapi/migration.json | 3 + tests/qtest/meson.build | 4 + 6 files changed, 407 insertions(+), 3 deletions(-) create mode 100644 migration/multifd-qatzip.c diff --git a/hw/core/qdev-properties-system.c b/hw/core/qdev-properties-sys= tem.c index f13350b4fb..eb50d6ec5b 100644 --- a/hw/core/qdev-properties-system.c +++ b/hw/core/qdev-properties-system.c @@ -659,7 +659,11 @@ const PropertyInfo qdev_prop_fdc_drive_type =3D { const PropertyInfo qdev_prop_multifd_compression =3D { .name =3D "MultiFDCompression", .description =3D "multifd_compression values, " - "none/zlib/zstd/qpl/uadk", + "none/zlib/zstd/qpl/uadk" +#ifdef CONFIG_QATZIP + "/qatzip" +#endif + , .enum_table =3D &MultiFDCompression_lookup, .get =3D qdev_propinfo_get_enum, .set =3D qdev_propinfo_set_enum, diff --git a/migration/meson.build b/migration/meson.build index 5ce2acb41e..c9454c26ae 100644 --- a/migration/meson.build +++ b/migration/meson.build @@ -41,6 +41,7 @@ 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')) system_ss.add(when: uadk, if_true: files('multifd-uadk.c')) +system_ss.add(when: qatzip, if_true: files('multifd-qatzip.c')) =20 specific_ss.add(when: 'CONFIG_SYSTEM_ONLY', if_true: files('ram.c', diff --git a/migration/multifd-qatzip.c b/migration/multifd-qatzip.c new file mode 100644 index 0000000000..a1502a5589 --- /dev/null +++ b/migration/multifd-qatzip.c @@ -0,0 +1,391 @@ +/* + * Multifd QATzip compression implementation + * + * Copyright (c) Bytedance + * + * Authors: + * Bryan Zhang + * Hao Xiang + * Yichen Wang + * + * This work is licensed under the terms of the GNU GPL, version 2 or late= r. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "exec/ramblock.h" +#include "exec/target_page.h" +#include "qapi/error.h" +#include "migration.h" +#include "options.h" +#include "multifd.h" +#include + +struct qatzip_data { + /* + * Unique session for use with QATzip API + */ + QzSession_T sess; + + /* + * For compression: Buffer for pages to compress + * For decompression: Buffer for data to decompress + */ + uint8_t *in_buf; + uint32_t in_len; + + /* + * For compression: Output buffer of compressed data + * For decompression: Output buffer of decompressed data + */ + uint8_t *out_buf; + uint32_t out_len; +}; + +/** + * qatzip_send_setup: Set up QATzip session and private buffers. + * + * @param p Multifd channel params + * @param errp Pointer to error, which will be set in case of error + * @return 0 on success, -1 on error (and *errp will be set) + */ +static int qatzip_send_setup(MultiFDSendParams *p, Error **errp) +{ + struct qatzip_data *q; + QzSessionParamsDeflate_T params; + const char *err_msg; + int ret; + int sw_fallback; + + q =3D g_new0(struct qatzip_data, 1); + p->compress_data =3D q; + /* We need one extra place for the packet header */ + p->iov =3D g_new0(struct iovec, 2); + + sw_fallback =3D 0; + if (migrate_multifd_qatzip_sw_fallback()) { + sw_fallback =3D 1; + } + + ret =3D qzInit(&q->sess, sw_fallback); + if (ret !=3D QZ_OK && ret !=3D QZ_DUPLICATE) { + err_msg =3D "qzInit failed"; + goto err_free_q; + } + + ret =3D qzGetDefaultsDeflate(¶ms); + if (ret !=3D QZ_OK) { + err_msg =3D "qzGetDefaultsDeflate failed"; + goto err_close; + } + + /* Make sure to use configured QATzip compression level. */ + params.common_params.comp_lvl =3D migrate_multifd_qatzip_level(); + + ret =3D qzSetupSessionDeflate(&q->sess, ¶ms); + if (ret !=3D QZ_OK && ret !=3D QZ_DUPLICATE) { + err_msg =3D "qzSetupSessionDeflate failed"; + goto err_close; + } + + /* TODO Add support for larger packets. */ + if (MULTIFD_PACKET_SIZE > UINT32_MAX) { + err_msg =3D "packet size too large for QAT"; + goto err_close; + } + + q->in_len =3D MULTIFD_PACKET_SIZE; + q->in_buf =3D qzMalloc(q->in_len, 0, PINNED_MEM); + if (!q->in_buf) { + err_msg =3D "qzMalloc failed"; + goto err_close; + } + + q->out_len =3D qzMaxCompressedLength(MULTIFD_PACKET_SIZE, &q->sess); + q->out_buf =3D qzMalloc(q->out_len, 0, PINNED_MEM); + if (!q->out_buf) { + err_msg =3D "qzMalloc failed"; + goto err_free_inbuf; + } + + return 0; + +err_free_inbuf: + qzFree(q->in_buf); +err_close: + qzClose(&q->sess); +err_free_q: + g_free(q); + g_free(p->iov); + p->iov =3D NULL; + error_setg(errp, "multifd %u: %s", p->id, err_msg); + return -1; +} + +/** + * qatzip_send_cleanup: Tear down QATzip session and release private buffe= rs. + * + * @param p Multifd channel params + * @param errp Pointer to error, which will be set in case of error + * @return None + */ +static void qatzip_send_cleanup(MultiFDSendParams *p, Error **errp) +{ + struct qatzip_data *q =3D p->compress_data; + const char *err_msg; + int ret; + + ret =3D qzTeardownSession(&q->sess); + if (ret !=3D QZ_OK) { + err_msg =3D "qzTeardownSession failed"; + goto err; + } + + ret =3D qzClose(&q->sess); + if (ret !=3D QZ_OK) { + err_msg =3D "qzClose failed"; + goto err; + } + + qzFree(q->in_buf); + q->in_buf =3D NULL; + qzFree(q->out_buf); + q->out_buf =3D NULL; + g_free(p->iov); + p->iov =3D NULL; + g_free(p->compress_data); + p->compress_data =3D NULL; + return; + +err: + error_setg(errp, "multifd %u: %s", p->id, err_msg); +} + +/** + * qatzip_send_prepare: Compress pages and update IO channel info. + * + * @param p Multifd channel params + * @param errp Pointer to error, which will be set in case of error + * @return 0 on success, -1 on error (and *errp will be set) + */ +static int qatzip_send_prepare(MultiFDSendParams *p, Error **errp) +{ + MultiFDPages_t *pages =3D p->pages; + struct qatzip_data *q =3D p->compress_data; + int ret; + unsigned int in_len, out_len; + + if (!multifd_send_prepare_common(p)) { + goto out; + } + + /* memcpy all the pages into one buffer. */ + for (int i =3D 0; i < pages->normal_num; i++) { + memcpy(q->in_buf + (i * p->page_size), + p->pages->block->host + pages->offset[i], + p->page_size); + } + + in_len =3D pages->normal_num * p->page_size; + if (in_len > q->in_len) { + error_setg(errp, "multifd %u: unexpectedly large input", p->id); + return -1; + } + out_len =3D q->out_len; + + /* + * Unlike other multifd compression implementations, we use a non-stre= aming + * API and place all the data into one buffer, rather than sending eac= h page + * to the compression API at a time. Based on initial benchmarks, the + * non-streaming API outperforms the streaming API. Plus, the logic in= QEMU + * is friendly to using the non-streaming API anyway. If either of the= se + * statements becomes no longer true, we can revisit adding a streaming + * implementation. + */ + ret =3D qzCompress(&q->sess, q->in_buf, &in_len, q->out_buf, &out_len,= 1); + if (ret !=3D QZ_OK) { + error_setg(errp, "multifd %u: QATzip returned %d instead of QZ_OK", + p->id, ret); + return -1; + } + if (in_len !=3D pages->normal_num * p->page_size) { + error_setg(errp, "multifd %u: QATzip failed to compress all input", + p->id); + return -1; + } + + p->iov[p->iovs_num].iov_base =3D q->out_buf; + p->iov[p->iovs_num].iov_len =3D out_len; + p->iovs_num++; + p->next_packet_size =3D out_len; + +out: + p->flags |=3D MULTIFD_FLAG_QATZIP; + multifd_send_fill_packet(p); + return 0; +} + +/** + * qatzip_recv_setup: Set up QATzip session and allocate private buffers. + * + * @param p Multifd channel params + * @param errp Pointer to error, which will be set in case of error + * @return 0 on success, -1 on error (and *errp will be set) + */ +static int qatzip_recv_setup(MultiFDRecvParams *p, Error **errp) +{ + struct qatzip_data *q; + QzSessionParamsDeflate_T params; + const char *err_msg; + int ret; + int sw_fallback; + + q =3D g_new0(struct qatzip_data, 1); + p->compress_data =3D q; + + sw_fallback =3D 0; + if (migrate_multifd_qatzip_sw_fallback()) { + sw_fallback =3D 1; + } + + ret =3D qzInit(&q->sess, sw_fallback); + if (ret !=3D QZ_OK && ret !=3D QZ_DUPLICATE) { + err_msg =3D "qzInit failed"; + goto err_free_q; + } + + ret =3D qzGetDefaultsDeflate(¶ms); + if (ret !=3D QZ_OK) { + err_msg =3D "qzGetDefaultsDeflate failed"; + goto err_close; + } + + /* Make sure to use configured QATzip compression level. */ + params.common_params.comp_lvl =3D migrate_multifd_qatzip_level(); + + ret =3D qzSetupSessionDeflate(&q->sess, ¶ms); + if (ret !=3D QZ_OK && ret !=3D QZ_DUPLICATE) { + err_msg =3D "qzSetupSessionDeflate failed"; + goto err_close; + } + + /* + * Mimic multifd-zlib, which reserves extra space for the + * incoming packet. + */ + q->in_len =3D MULTIFD_PACKET_SIZE * 2; + q->in_buf =3D qzMalloc(q->in_len, 0, PINNED_MEM); + if (!q->in_buf) { + err_msg =3D "qzMalloc failed"; + goto err_close; + } + + q->out_len =3D MULTIFD_PACKET_SIZE; + q->out_buf =3D qzMalloc(q->out_len, 0, PINNED_MEM); + if (!q->out_buf) { + err_msg =3D "qzMalloc failed"; + goto err_free_inbuf; + } + + return 0; + +err_free_inbuf: + qzFree(q->in_buf); +err_close: + qzClose(&q->sess); +err_free_q: + g_free(q); + error_setg(errp, "multifd %u: %s", p->id, err_msg); + return -1; +} + +/** + * qatzip_recv_cleanup: Tear down QATzip session and release private buffe= rs. + * + * @param p Multifd channel params + * @return None + */ +static void qatzip_recv_cleanup(MultiFDRecvParams *p) +{ + struct qatzip_data *q =3D p->compress_data; + + /* Ignoring return values here due to function signature. */ + qzTeardownSession(&q->sess); + qzClose(&q->sess); + qzFree(q->in_buf); + qzFree(q->out_buf); + g_free(p->compress_data); +} + + +/** + * qatzip_recv: Decompress pages and copy them to the appropriate + * locations. + * + * @param p Multifd channel params + * @param errp Pointer to error, which will be set in case of error + * @return 0 on success, -1 on error (and *errp will be set) + */ +static int qatzip_recv(MultiFDRecvParams *p, Error **errp) +{ + struct qatzip_data *q =3D p->compress_data; + int ret; + unsigned int in_len, out_len; + uint32_t in_size =3D p->next_packet_size; + uint32_t expected_size =3D p->normal_num * p->page_size; + uint32_t flags =3D p->flags & MULTIFD_FLAG_COMPRESSION_MASK; + + if (in_size > q->in_len) { + error_setg(errp, "multifd %u: received unexpectedly large packet", + p->id); + return -1; + } + + if (flags !=3D MULTIFD_FLAG_QATZIP) { + error_setg(errp, "multifd %u: flags received %x flags expected %x", + p->id, flags, MULTIFD_FLAG_QATZIP); + return -1; + } + + ret =3D qio_channel_read_all(p->c, (void *)q->in_buf, in_size, errp); + if (ret !=3D 0) { + return ret; + } + + in_len =3D in_size; + out_len =3D q->out_len; + ret =3D qzDecompress(&q->sess, q->in_buf, &in_len, q->out_buf, &out_le= n); + if (ret !=3D QZ_OK) { + error_setg(errp, "multifd %u: qzDecompress failed", p->id); + return -1; + } + if (out_len !=3D expected_size) { + error_setg(errp, "multifd %u: packet size received %u size expecte= d %u", + p->id, out_len, expected_size); + return -1; + } + + /* Copy each page to its appropriate location. */ + for (int i =3D 0; i < p->normal_num; i++) { + memcpy(p->host + p->normal[i], + q->out_buf + p->page_size * i, + p->page_size); + } + return 0; +} + +static MultiFDMethods multifd_qatzip_ops =3D { + .send_setup =3D qatzip_send_setup, + .send_cleanup =3D qatzip_send_cleanup, + .send_prepare =3D qatzip_send_prepare, + .recv_setup =3D qatzip_recv_setup, + .recv_cleanup =3D qatzip_recv_cleanup, + .recv =3D qatzip_recv +}; + +static void multifd_qatzip_register(void) +{ + multifd_register_ops(MULTIFD_COMPRESSION_QATZIP, &multifd_qatzip_ops); +} + +migration_init(multifd_qatzip_register); diff --git a/migration/multifd.h b/migration/multifd.h index 0ecd6f47d7..adceb65050 100644 --- a/migration/multifd.h +++ b/migration/multifd.h @@ -34,14 +34,15 @@ MultiFDRecvData *multifd_get_recv_data(void); /* Multifd Compression flags */ #define MULTIFD_FLAG_SYNC (1 << 0) =20 -/* We reserve 4 bits for compression methods */ -#define MULTIFD_FLAG_COMPRESSION_MASK (0xf << 1) +/* We reserve 5 bits for compression methods */ +#define MULTIFD_FLAG_COMPRESSION_MASK (0x1f << 1) /* we need to be compatible. Before compression value was 0 */ #define MULTIFD_FLAG_NOCOMP (0 << 1) #define MULTIFD_FLAG_ZLIB (1 << 1) #define MULTIFD_FLAG_ZSTD (2 << 1) #define MULTIFD_FLAG_QPL (4 << 1) #define MULTIFD_FLAG_UADK (8 << 1) +#define MULTIFD_FLAG_QATZIP (16 << 1) =20 /* 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 8c9f2a8aa7..ea62f983b1 100644 --- a/qapi/migration.json +++ b/qapi/migration.json @@ -558,6 +558,8 @@ # # @zstd: use zstd compression method. # +# @qatzip: use qatzip compression method. (Since 9.1) +# # @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 @@ -570,6 +572,7 @@ { 'enum': 'MultiFDCompression', 'data': [ 'none', 'zlib', { 'name': 'zstd', 'if': 'CONFIG_ZSTD' }, + { 'name': 'qatzip', 'if': 'CONFIG_QATZIP'}, { 'name': 'qpl', 'if': 'CONFIG_QPL' }, { 'name': 'uadk', 'if': 'CONFIG_UADK' } ] } =20 diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build index 12792948ff..23e46144d7 100644 --- a/tests/qtest/meson.build +++ b/tests/qtest/meson.build @@ -324,6 +324,10 @@ if gnutls.found() endif endif =20 +if qatzip.found() + migration_files +=3D [qatzip] +endif + qtests =3D { 'bios-tables-test': [io, 'boot-sector.c', 'acpi-utils.c', 'tpm-emu.c'], 'cdrom-test': files('boot-sector.c'), --=20 Yichen Wang