From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38971) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WLDSG-0000Fs-6h for qemu-devel@nongnu.org; Wed, 05 Mar 2014 10:10:01 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WLDSB-00054c-6L for qemu-devel@nongnu.org; Wed, 05 Mar 2014 10:09:56 -0500 Received: from mx1.redhat.com ([209.132.183.28]:57003) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WLDSA-00054G-T8 for qemu-devel@nongnu.org; Wed, 05 Mar 2014 10:09:51 -0500 Date: Wed, 5 Mar 2014 16:09:31 +0100 From: Igor Mammedov Message-ID: <20140305160931.086242d2@nial.usersys.redhat.com> In-Reply-To: <5316F71A.4090004@suse.de> References: <1393941656-29068-1-git-send-email-pbonzini@redhat.com> <1393941656-29068-9-git-send-email-pbonzini@redhat.com> <5316F71A.4090004@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Subject: Re: [Qemu-devel] [PATCH 2.1 08/28] vl: convert -m to QemuOpts List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Andreas =?ISO-8859-1?B?RuRyYmVy?= Cc: ehabkost@redhat.com, hutao@cn.fujitsu.com, mtosatti@redhat.com, qemu-devel@nongnu.org, a.motakis@virtualopensystems.com, Paolo Bonzini , gaowanlong@cn.fujitsu.com On Wed, 05 Mar 2014 11:06:18 +0100 Andreas F=E4rber wrote: > Am 04.03.2014 15:00, schrieb Paolo Bonzini: > > From: Igor Mammedov > >=20 > > Adds option to -m > > "mem" - startup memory amount >=20 > Sorry for jumping in late, but assuming that -m is for "memory" already, > wouldn't it make more sense to name it "size" instead of "mem"? >=20 > >=20 > > For compatibility with legacy CLI if suffix-less number is passed, > > it assumes amount in Mb. > >=20 > > Otherwise user is free to use suffixed number using suffixes b,k/K,M,G > >=20 > > Signed-off-by: Igor Mammedov > > Reviewed-by: Eric Blake > > Signed-off-by: Paolo Bonzini > > --- > > qemu-options.hx | 9 +++++--- > > vl.c | 70 ++++++++++++++++++++++++++++++++++++++++++++++---= -------- > > 2 files changed, 63 insertions(+), 16 deletions(-) > >=20 > > diff --git a/qemu-options.hx b/qemu-options.hx > > index f948f28..98e78ca 100644 > > --- a/qemu-options.hx > > +++ b/qemu-options.hx > > @@ -214,10 +214,13 @@ use is discouraged as it may be removed from futu= re versions. > > ETEXI > > =20 > > DEF("m", HAS_ARG, QEMU_OPTION_m, > > - "-m megs set virtual RAM size to megs MB [default=3D" > > - stringify(DEFAULT_RAM_SIZE) "]\n", QEMU_ARCH_ALL) > > + "-m [mem=3D]megs\n" > > + " configure guest RAM\n" > > + " mem: initial amount of guest memory (default: " > > + stringify(DEFAULT_RAM_SIZE) "MiB)\n", > > + QEMU_ARCH_ALL) > > STEXI > > -@item -m @var{megs} > > +@item -m [mem=3D]@var{megs} > > @findex -m > > Set virtual RAM size to @var{megs} megabytes. Default is 128 MiB. Opt= ionally, > > a suffix of ``M'' or ``G'' can be used to signify a value in megabytes= or > > diff --git a/vl.c b/vl.c > > index dafe6f6..ac5f425 100644 > > --- a/vl.c > > +++ b/vl.c > > @@ -478,6 +478,20 @@ static QemuOptsList qemu_msg_opts =3D { > > }, > > }; > > =20 > > +static QemuOptsList qemu_mem_opts =3D { > > + .name =3D "memory", > > + .implied_opt_name =3D "mem", > > + .head =3D QTAILQ_HEAD_INITIALIZER(qemu_mem_opts.head), > > + .merge_lists =3D true, > > + .desc =3D { > > + { > > + .name =3D "mem", > > + .type =3D QEMU_OPT_SIZE, > > + }, > > + { /* end of list */ } > > + }, > > +}; > > + > > /** > > * Get machine options > > * > > @@ -2718,6 +2732,7 @@ int main(int argc, char **argv, char **envp) > > }; > > const char *trace_events =3D NULL; > > const char *trace_file =3D NULL; > > + const ram_addr_t default_ram_size =3D (ram_addr_t)DEFAULT_RAM_SIZE= * 1024 * 1024; > > =20 > > atexit(qemu_run_exit_notifiers); > > error_set_progname(argv[0]); > > @@ -2758,6 +2773,7 @@ int main(int argc, char **argv, char **envp) > > qemu_add_opts(&qemu_realtime_opts); > > qemu_add_opts(&qemu_msg_opts); > > qemu_add_opts(&qemu_numa_opts); > > + qemu_add_opts(&qemu_mem_opts); > > =20 > > runstate_init(); > > =20 > > @@ -2773,7 +2789,7 @@ int main(int argc, char **argv, char **envp) > > module_call_init(MODULE_INIT_MACHINE); > > machine =3D find_default_machine(); > > cpu_model =3D NULL; > > - ram_size =3D 0; > > + ram_size =3D default_ram_size; > > snapshot =3D 0; > > cyls =3D heads =3D secs =3D 0; > > translation =3D BIOS_ATA_TRANSLATION_AUTO; > > @@ -3063,20 +3079,50 @@ int main(int argc, char **argv, char **envp) > > exit(0); > > break; > > case QEMU_OPTION_m: { > > - int64_t value; > > uint64_t sz; > > - char *end; > > + const char *mem_str; > > =20 > > - value =3D strtosz(optarg, &end); > > - if (value < 0 || *end) { > > - fprintf(stderr, "qemu: invalid ram size: %s\n", op= targ); > > - exit(1); > > + opts =3D qemu_opts_parse(qemu_find_opts("memory"), > > + optarg, 1); > > + if (!opts) { > > + exit(EXIT_FAILURE); > > + } > > + > > + mem_str =3D qemu_opt_get(opts, "mem"); > > + if (!mem_str) { > > + fprintf(stderr, "qemu: invalid -m option, missing " > > + "'mem' option\n"); >=20 > error_report(), in particular to fix "qemu: " >=20 > > + exit(EXIT_FAILURE); > > + } > > + if (!*mem_str) { > > + fprintf(stderr, "qemu: missing 'mem' option value\= n"); >=20 > error_report() >=20 > > + exit(EXIT_FAILURE); > > + } > > + > > + sz =3D qemu_opt_get_size(opts, "mem", ram_size); > > + > > + /* Fix up legacy suffix-less format */ > > + if (g_ascii_isdigit(mem_str[strlen(mem_str) - 1])) { > > + uint64_t overflow_check =3D sz; > > + > > + sz <<=3D 20; > > + if ((sz >> 20) !=3D overflow_check) { > > + fprintf(stderr, "qemu: too large 'mem' option " > > + "value\n"); >=20 > error_report() >=20 > > + exit(EXIT_FAILURE); > > + } > > + } > > + > > + /* backward compatibility behaviour for case "-m 0" */ > > + if (sz =3D=3D 0) { > > + sz =3D default_ram_size; > > } > > - sz =3D QEMU_ALIGN_UP((uint64_t)value, 8192); > > + > > + sz =3D QEMU_ALIGN_UP(sz, 8192); > > ram_size =3D sz; > > if (ram_size !=3D sz) { > > fprintf(stderr, "qemu: ram size too large\n"); >=20 > error_report() while at it? >=20 > > - exit(1); > > + exit(EXIT_FAILURE); > > } > > break; > > } > > @@ -3921,10 +3967,8 @@ int main(int argc, char **argv, char **envp) > > exit(1); > > } > > =20 > > - /* init the memory */ > > - if (ram_size =3D=3D 0) { > > - ram_size =3D DEFAULT_RAM_SIZE * 1024 * 1024; > > - } > > + /* store value for the future use */ > > + qemu_opt_set_number(qemu_find_opts_singleton("memory"), "mem", ram= _size); > > =20 > > if (qemu_opts_foreach(qemu_find_opts("device"), device_help_func, = NULL, 0) > > !=3D 0) { >=20 > Here's a dependency on the preceding patch - other than that, these two > could be applied independently of the rest via qemu-trivial? I'll amend patch according to your notes and resubmit it with its only depe= ndency CCing trivial-patches this time. >=20 > Regards, > Andreas >=20