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[82.64.138.184]) by smtp.googlemail.com with ESMTPSA id q11-20020a05600c46cb00b00412b4dca795sm1112700wmo.7.2024.02.28.23.01.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Feb 2024 23:01:36 -0800 (PST) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 62005e69-d6d0-11ee-a1ee-f123f15fe8a2 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rabbit-lu.20230601.gappssmtp.com; s=20230601; t=1709190098; x=1709794898; darn=lists.xenproject.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=N+XvJ1Fl3pHzHwaInzg8gm5Lb2VaZTApN77ZDCzckBU=; b=fIrPaXIHGkz4qgZ1MptkHkIhiYDZoam308A+FgpRjVvKB4fw2MPq+M4ezaneZ9Jgym baJ1VWx8PFU5/35KHf6rEHL7p1VVRvtmxkuHNGlc8d+04PQAipGZ/BKTe8P53qYSBRKH no7uLgRC0iOlGE6fnWIBqrs38rT5JiwDhEyL2ZPV3UjVXoYm1GsWwKfcA3szls3rOg31 nbfFQpENhM+Y4Hr7AjP+R+9Vya0YoOdOd5P3q76YWyn+vPvT2X8W73FfdmFfdRdMn9st EzAGsh2wJVPVfUs6ZliusB7M+w/IF452zcjmrS11zokVEbXvaIg54z8IXhKpgctWv0pV v/CQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709190098; x=1709794898; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=N+XvJ1Fl3pHzHwaInzg8gm5Lb2VaZTApN77ZDCzckBU=; b=axqsM8s2fzHYecAk0O5AUMnBsnDAiFkUINNpk0YS7X2NZJe8XfYEdMItHzSp4PAPHF uFJ96eZWs8cxIZTy5DrD43mPGBqlYQN8WKeUKZFBIPx2AQj3rEndEmZQRGXtPBqCpQZc TVv71aM0alzGFCZXLa7RqCkyke0klLHQACscTt6qh+bzsPIEllUEPPKQAzgoauriAaTV +isq6YMESHFTDp2swT/pb9Cx8oT1nChPOR7jivNBBjCUg2KY0+ycf8SJZ2aZEF/FkkkI uoNRHlTpN0uqhRs8eIy1p+TwSk3Cuo6YgcdO2sCZp4xXl2DEQwWbafdQy4eAwPuMzzub 8oAA== X-Gm-Message-State: AOJu0YwRfGWxD7seDLy8lLT2pBd0K/mMesmp/pjfhYo1dck1TK+rm0K7 WtXRYifRg1fm/f3exjXCLUObcqHQVkoacjcfNtGbMOYZX85ADHfcQHdoAyJta3aIQDIT/0pi4LZ 62htbVw== X-Google-Smtp-Source: AGHT+IFZfT6xfkRkUXf4s8EmWrprK9vrXBueCfy1deQZH/oAhpSdos9Ld1d/h9tG1HGqp/f1oPyspw== X-Received: by 2002:a05:600c:1c02:b0:412:65a5:c9f4 with SMTP id j2-20020a05600c1c0200b0041265a5c9f4mr1102154wms.28.1709190097579; Wed, 28 Feb 2024 23:01:37 -0800 (PST) From: =?utf-8?q?zithro_/_Cyril_R=C3=A9bert?= To: xen-devel@lists.xenproject.org Cc: =?utf-8?q?zithro_/_Cyril_R=C3=A9bert?= , Andrew Cooper , =?utf-8?q?Marek_Marczykowski-G?= =?utf-8?q?=C3=B3recki?= , Wei Liu , Anthony PERARD Subject: [PATCH] tools/xl: add suspend-to-ram and resume subcommands Date: Thu, 29 Feb 2024 08:00:10 +0100 Message-Id: <4e9f3590be9f19edb87e05c7b7c2efeae8863109.1709190010.git.slack@rabbit.lu> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 The xl command doesn't provide suspend/resume, so add them : xl suspend-to-ram xl resume This patch follows a discussion on XenDevel: when you want the virtualized equivalent of "sleep"-ing a host, it's better to suspend/resume than to pause/unpause a domain. Suggested-by: Andrew Cooper Suggested-by: Marek Marczykowski-Górecki --- - Tested on v4.17, x86 - the function "libxl_domain_resume" is called like libvirt does, so using a "co-operative resume", but I don't know what it means (: - there may be a problem with the words resume <-> restore, like for "LIBXL_HAVE_NO_SUSPEND_RESUME" - for the docs, I only slightly adapted a copy/paste from xl pause ... --- --- docs/man/xl.1.pod.in | 10 ++++++++++ tools/xl/xl.h | 2 ++ tools/xl/xl_cmdtable.c | 10 ++++++++++ tools/xl/xl_vmcontrol.c | 36 ++++++++++++++++++++++++++++++++++++ 4 files changed, 58 insertions(+) diff --git a/docs/man/xl.1.pod.in b/docs/man/xl.1.pod.in index bed8393473..63d80f1449 100644 --- a/docs/man/xl.1.pod.in +++ b/docs/man/xl.1.pod.in @@ -682,6 +682,10 @@ Pass the VNC password to vncviewer via stdin. =back +=item B I + +Resume a domain, after having been suspended to RAM. + =item B [I] I I [I] Saves a running domain to a state file so that it can be restored @@ -760,6 +764,12 @@ in response to this event. =back +=item B I + +Suspend a domain to RAM. When in a suspended state the domain will still +consume allocated resources (such as memory), but will not be eligible for +scheduling by the Xen hypervisor. It is in a shutdown state, but not dying. + =item B I I Send a to the domain, each type of request is diff --git a/tools/xl/xl.h b/tools/xl/xl.h index 9c86bb1d98..716ad32423 100644 --- a/tools/xl/xl.h +++ b/tools/xl/xl.h @@ -133,6 +133,8 @@ int main_migrate(int argc, char **argv); int main_dump_core(int argc, char **argv); int main_pause(int argc, char **argv); int main_unpause(int argc, char **argv); +int main_suspendtoram(int argc, char **argv); +int main_resume(int argc, char **argv); int main_destroy(int argc, char **argv); int main_shutdown(int argc, char **argv); int main_reboot(int argc, char **argv); diff --git a/tools/xl/xl_cmdtable.c b/tools/xl/xl_cmdtable.c index 62bdb2aeaa..1382282252 100644 --- a/tools/xl/xl_cmdtable.c +++ b/tools/xl/xl_cmdtable.c @@ -136,6 +136,16 @@ const struct cmd_spec cmd_table[] = { "Unpause a paused domain", "", }, + { "suspend-to-ram", + &main_suspendtoram, 0, 1, + "Suspend a domain to RAM", + "", + }, + { "resume", + &main_resume, 0, 1, + "Resume a domain from RAM", + "", + }, { "console", &main_console, 0, 0, "Attach to domain's console", diff --git a/tools/xl/xl_vmcontrol.c b/tools/xl/xl_vmcontrol.c index 98f6bd2e76..ba45f89c5a 100644 --- a/tools/xl/xl_vmcontrol.c +++ b/tools/xl/xl_vmcontrol.c @@ -42,6 +42,16 @@ static void unpause_domain(uint32_t domid) libxl_domain_unpause(ctx, domid, NULL); } +static void suspend_domain_toram(uint32_t domid) +{ + libxl_domain_suspend_only(ctx, domid, NULL); +} + +static void resume_domain(uint32_t domid) +{ + libxl_domain_resume(ctx, domid, 1, NULL); +} + static void destroy_domain(uint32_t domid, int force) { int rc; @@ -82,6 +92,32 @@ int main_unpause(int argc, char **argv) return EXIT_SUCCESS; } +int main_suspendtoram(int argc, char **argv) +{ + int opt; + + SWITCH_FOREACH_OPT(opt, "", NULL, "suspend-to-ram", 1) { + /* No options */ + } + + suspend_domain_toram(find_domain(argv[optind])); + + return EXIT_SUCCESS; +} + +int main_resume(int argc, char **argv) +{ + int opt; + + SWITCH_FOREACH_OPT(opt, "", NULL, "resume", 1) { + /* No options */ + } + + resume_domain(find_domain(argv[optind])); + + return EXIT_SUCCESS; +} + int main_destroy(int argc, char **argv) { int opt;