From nobody Wed Nov 27 10:48:26 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=quarantine dis=none) header.from=bytedance.com ARC-Seal: i=1; a=rsa-sha256; t=1699940590; cv=none; d=zohomail.com; s=zohoarc; b=TD+o9F4M+pb615uSKQDVtQH5MOj2nSUSqM8Pj2uWMei0f6QV6rUajwgSienmxwTmeVkGR0otn3tj0xQvdLWq7FBJMAC+31yrhwK01YY6T/bIAPBIvx0KV66GWX9xuwM/jF62WVC+oBeWeHz0jXt4pQm+wXsNY8IJsZvRiuVVR8g= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1699940590; h=Content-Transfer-Encoding:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To:Cc; bh=Xr+ydM0w1ChiLZUK2AmzFF5aaNpk3nnn08+T2D9fxos=; b=h4yFA1MzCSsp4XqdFH5GiJu2DcyuQesqz8uoRrOxXK3+3WADYGPLiKjNijOoJ92HZ0ZFJOogIe6CsYGJ1M8Vpoo1gawIg3AMKVa3Surc2bczhNIhcdei/e1KAYlF/2+EfAvAv9O89s5kD+vbiDtfN2kdHs+P3iWrgBNSKhZVtZI= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=quarantine dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1699940590553520.4772734980467; Mon, 13 Nov 2023 21:43:10 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1r2mB7-0007AB-Tz; Tue, 14 Nov 2023 00:41:37 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1r2mB5-00079S-GV for qemu-devel@nongnu.org; Tue, 14 Nov 2023 00:41:35 -0500 Received: from mail-qk1-x72f.google.com ([2607:f8b0:4864:20::72f]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1r2mB3-0001RO-Lb for qemu-devel@nongnu.org; Tue, 14 Nov 2023 00:41:34 -0500 Received: by mail-qk1-x72f.google.com with SMTP id af79cd13be357-7789aed0e46so347374985a.0 for ; Mon, 13 Nov 2023 21:41:33 -0800 (PST) Received: from n231-230-216.byted.org ([130.44.212.104]) by smtp.gmail.com with ESMTPSA id w2-20020a05620a094200b0077891d2d12dsm2400367qkw.43.2023.11.13.21.41.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Nov 2023 21:41:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1699940493; x=1700545293; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=Xr+ydM0w1ChiLZUK2AmzFF5aaNpk3nnn08+T2D9fxos=; b=gYG+oihFRbyXIlUjYeqK1xW72wxSkK+NIcWS8NjNRWhLz4D9wG1qjGj1whgU6lUYsP 0eIyzYEHldNmR7LTvY1VfZ7SeQCe5SJDW8ONXvLHwX5rNcxQCvP4j/HucapY3ofzbsXx WYIbpfM4+pTkA7d0/9dPkCv7MONdH2R7cwmL3MzC74aYWoBPkFQSyc+JMuXJPRDebVau P0wPcmICJQaYhdiqgnk2o7ImmkFZ25ctLATqavy8yvcgRbnmCrk+Jlt83/v3+vAkPP+c WP/V7u2ho+SkNe4g9buKxnp6SI94OMYfo8bwFKu+DZLwvNmsVDP6I9Dud2/wCohDhg2E WAxg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699940493; x=1700545293; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Xr+ydM0w1ChiLZUK2AmzFF5aaNpk3nnn08+T2D9fxos=; b=j1bQchCSPYnUkcIspZbMIZfbxqX85n2w/r1CO1h4SkguGWXNoZIyWiUwFds/HaMiJC N12nOVRYVg11gQxjIBFVC4WbdTKzqgrQ4/ljQV2xjHIbmJ1v4NzDtC7DF+jUrxVsy/5F YycNvQxAv7CREJYE+E/rRCb/JAouKikDVDb26jazhJqbEjO7aUfQ5KP4QBkth5IIn4H0 NXOrHEAwnWZZgL8vUHfdBHi6nPA/c/bL3NBTxvoGW4yRfsGAI8wKpQTdNd5fzRle9ihn WE8y2r13sES99nT6OMJnLVWB/zYXWbxtHQNN/A3EJvJFwF7Jx6teUsLUz8A+FM+/tWZD nl0Q== X-Gm-Message-State: AOJu0Yw37DKPC2J6N5JvbGKuGVfLmEC0VC1iOh6E0xetV3pIqted4rbT /wQCUvX7yhPdW+JwL1qSJfs75g== X-Google-Smtp-Source: AGHT+IEA9HBOdkrDJf774Pzi34f+3p9eGpWwXEG5+on5ufo70sFE/7fe9sZw2logv71cNshNiqPNFg== X-Received: by 2002:a05:620a:3b06:b0:77b:c536:3722 with SMTP id tl6-20020a05620a3b0600b0077bc5363722mr1024227qkn.25.1699940492818; Mon, 13 Nov 2023 21:41:32 -0800 (PST) From: Hao Xiang To: farosas@suse.de, peter.maydell@linaro.org, quintela@redhat.com, peterx@redhat.com, marcandre.lureau@redhat.com, bryan.zhang@bytedance.com, qemu-devel@nongnu.org Subject: [PATCH v2 01/20] multifd: Add capability to enable/disable zero_page Date: Tue, 14 Nov 2023 05:40:13 +0000 Message-Id: <20231114054032.1192027-2-hao.xiang@bytedance.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20231114054032.1192027-1-hao.xiang@bytedance.com> References: <20231114054032.1192027-1-hao.xiang@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+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::72f; envelope-from=hao.xiang@bytedance.com; helo=mail-qk1-x72f.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, T_SCC_BODY_TEXT_LINE=-0.01 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @bytedance.com) X-ZM-MESSAGEID: 1699940591550100005 Content-Type: text/plain; charset="utf-8" From: Juan Quintela We have to enable it by default until we introduce the new code. Signed-off-by: Juan Quintela --- migration/options.c | 13 +++++++++++++ migration/options.h | 1 + qapi/migration.json | 8 +++++++- 3 files changed, 21 insertions(+), 1 deletion(-) diff --git a/migration/options.c b/migration/options.c index 8d8ec73ad9..00c0c4a0d6 100644 --- a/migration/options.c +++ b/migration/options.c @@ -204,6 +204,8 @@ Property migration_properties[] =3D { DEFINE_PROP_MIG_CAP("x-switchover-ack", MIGRATION_CAPABILITY_SWITCHOVER_ACK), DEFINE_PROP_MIG_CAP("x-dirty-limit", MIGRATION_CAPABILITY_DIRTY_LIMIT), + DEFINE_PROP_MIG_CAP("main-zero-page", + MIGRATION_CAPABILITY_MAIN_ZERO_PAGE), DEFINE_PROP_END_OF_LIST(), }; =20 @@ -284,6 +286,17 @@ bool migrate_multifd(void) return s->capabilities[MIGRATION_CAPABILITY_MULTIFD]; } =20 +bool migrate_use_main_zero_page(void) +{ + //MigrationState *s; + + //s =3D migrate_get_current(); + + // We will enable this when we add the right code. + // return s->enabled_capabilities[MIGRATION_CAPABILITY_MAIN_ZERO_PAGE]; + return true; +} + bool migrate_pause_before_switchover(void) { MigrationState *s =3D migrate_get_current(); diff --git a/migration/options.h b/migration/options.h index 246c160aee..c901eb57c6 100644 --- a/migration/options.h +++ b/migration/options.h @@ -88,6 +88,7 @@ int migrate_multifd_channels(void); MultiFDCompression migrate_multifd_compression(void); int migrate_multifd_zlib_level(void); int migrate_multifd_zstd_level(void); +bool migrate_use_main_zero_page(void); uint8_t migrate_throttle_trigger_threshold(void); const char *migrate_tls_authz(void); const char *migrate_tls_creds(void); diff --git a/qapi/migration.json b/qapi/migration.json index 975761eebd..09e4393591 100644 --- a/qapi/migration.json +++ b/qapi/migration.json @@ -531,6 +531,12 @@ # and can result in more stable read performance. Requires KVM # with accelerator property "dirty-ring-size" set. (Since 8.1) # +# +# @main-zero-page: If enabled, the detection of zero pages will be +# done on the main thread. Otherwise it is done on +# the multifd threads. +# (since 8.2) +# # Features: # # @deprecated: Member @block is deprecated. Use blockdev-mirror with @@ -555,7 +561,7 @@ { 'name': 'x-ignore-shared', 'features': [ 'unstable' ] }, 'validate-uuid', 'background-snapshot', 'zero-copy-send', 'postcopy-preempt', 'switchover-ack', - 'dirty-limit'] } + 'dirty-limit', 'main-zero-page'] } =20 ## # @MigrationCapabilityStatus: --=20 2.30.2