From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40884) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YSo6n-0001mh-Lp for qemu-devel@nongnu.org; Tue, 03 Mar 2015 09:47:45 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YSo6c-0003nJ-BV for qemu-devel@nongnu.org; Tue, 03 Mar 2015 09:47:41 -0500 Received: from mx1.redhat.com ([209.132.183.28]:33431) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YSo6c-0003nB-32 for qemu-devel@nongnu.org; Tue, 03 Mar 2015 09:47:30 -0500 From: Luiz Capitulino Date: Tue, 3 Mar 2015 09:47:25 -0500 Message-Id: <1425394046-20064-2-git-send-email-lcapitulino@redhat.com> In-Reply-To: <1425394046-20064-1-git-send-email-lcapitulino@redhat.com> References: <1425394046-20064-1-git-send-email-lcapitulino@redhat.com> Subject: [Qemu-devel] [PATCH 1/2] qemu-options.hx: improve -m description List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: imammedo@redhat.com, pkrempa@redhat.com, paulo.vital@profitbricks.com Add memory hotplug options to the command-line format. Also, add a complete command-line example and improve description. Signed-off-by: Luiz Capitulino --- qemu-options.hx | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-) diff --git a/qemu-options.hx b/qemu-options.hx index 85ca3ad..b0345ae 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -237,12 +237,24 @@ DEF("m", HAS_ARG, QEMU_OPTION_m, "NOTE: Some architectures might enforce a specific granularity\n", QEMU_ARCH_ALL) STEXI -@item -m [size=]@var{megs} +@item -m [size=]@var{megs}[,slots=n,maxmem=size] @findex -m -Set virtual RAM size to @var{megs} megabytes. Default is 128 MiB. Optionally, -a suffix of ``M'' or ``G'' can be used to signify a value in megabytes or -gigabytes respectively. Optional pair @var{slots}, @var{maxmem} could be used -to set amount of hotluggable memory slots and possible maximum amount of memory. +Sets guest startup RAM size to @var{megs} megabytes. Default is 128 MiB. +Optionally, a suffix of ``M'' or ``G'' can be used to signify a value in +megabytes or gigabytes respectively. Optional pair @var{slots}, @var{maxmem} +could be used to set amount of hotpluggable memory slots and maximum amount of +memory. Note that @var{maxmem} must be aligned to the page size. + +For example, the following command-line sets the guest startup RAM size to +1GB, creates 3 slots to hotplug additional memory and sets the maximum +memory the guest can reach to 4GB: + +@example +qemu-system-x86_64 -m 1G,slots=3,maxmem=4G +@end example + +If @var{slots} and @var{maxmem} are not specified, memory hotplug won't +be enabled and the guest startup RAM will never increase. ETEXI DEF("mem-path", HAS_ARG, QEMU_OPTION_mempath, -- 1.9.3