| Message ID | 1455634667-10388-1-git-send-email-armbru@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 02/16/16 15:57, Markus Armbruster wrote: > We set machine_class to the default first, and update it to the real > one later. Any use of machine_class in between is almost certainly > wrong. Set it once and for all instead. > > Signed-off-by: Markus Armbruster <armbru@redhat.com> > --- > vl.c | 11 ++++++----- > 1 file changed, 6 insertions(+), 5 deletions(-) > > diff --git a/vl.c b/vl.c > index 7918e9f..098728c 100644 > --- a/vl.c > +++ b/vl.c > @@ -2748,8 +2748,9 @@ static const QEMUOption *lookup_opt(int argc, char **argv, > return popt; > } > > -static void set_machine_options(MachineClass **machine_class) > +static MachineClass *select_machine(MachineClass *dflt) > { > + MachineClass *machine_class = dflt; > const char *optarg; > QemuOpts *opts; > Location loc; > @@ -2761,16 +2762,17 @@ static void set_machine_options(MachineClass **machine_class) > > optarg = qemu_opt_get(opts, "type"); > if (optarg) { > - *machine_class = machine_parse(optarg); > + machine_class = machine_parse(optarg); > } > > - if (*machine_class == NULL) { > + if (!machine_class) { > error_report("No machine specified, and there is no default"); > error_printf("Use -machine help to list supported machines\n"); > exit(1); > } > > loc_pop(&loc); > + return machine_class; > } > > static int machine_set_property(void *opaque, > @@ -3075,7 +3077,6 @@ int main(int argc, char **argv, char **envp) > os_setup_early_signal_handling(); > > module_call_init(MODULE_INIT_MACHINE); > - machine_class = find_default_machine(); > cpu_model = NULL; > snapshot = 0; > cyls = heads = secs = 0; > @@ -4066,7 +4067,7 @@ int main(int argc, char **argv, char **envp) > > replay_configure(icount_opts); > > - set_machine_options(&machine_class); > + machine_class = select_machine(find_default_machine()); > > set_memory_options(&ram_slots, &maxram_size, machine_class); > > Sorry for not being more responsive in this thread. I read through the patches now (including this one), and they look good to me. I have one suggestion for the commit message of this patch, after checking "vl.c" (and keeping the earlier patches of the series in mind): after the statement Any use of machine_class in between is almost certainly wrong can you please observe (there are no such uses right now) ? series Reviewed-by: Laszlo Ersek <lersek@redhat.com> Thanks Laszlo
On 02/16/2016 04:57 PM, Markus Armbruster wrote: > We set machine_class to the default first, and update it to the real > one later. Any use of machine_class in between is almost certainly > wrong. Set it once and for all instead. > > Signed-off-by: Markus Armbruster <armbru@redhat.com> > --- > vl.c | 11 ++++++----- > 1 file changed, 6 insertions(+), 5 deletions(-) > > diff --git a/vl.c b/vl.c > index 7918e9f..098728c 100644 > --- a/vl.c > +++ b/vl.c > @@ -2748,8 +2748,9 @@ static const QEMUOption *lookup_opt(int argc, char **argv, > return popt; > } > > -static void set_machine_options(MachineClass **machine_class) > +static MachineClass *select_machine(MachineClass *dflt) Hi Markus, I am no fan of "dflt" naming, but I can live with it. > { > + MachineClass *machine_class = dflt; > const char *optarg; > QemuOpts *opts; > Location loc; > @@ -2761,16 +2762,17 @@ static void set_machine_options(MachineClass **machine_class) > > optarg = qemu_opt_get(opts, "type"); > if (optarg) { > - *machine_class = machine_parse(optarg); > + machine_class = machine_parse(optarg); > } > > - if (*machine_class == NULL) { > + if (!machine_class) { > error_report("No machine specified, and there is no default"); > error_printf("Use -machine help to list supported machines\n"); > exit(1); > } > > loc_pop(&loc); > + return machine_class; > } > > static int machine_set_property(void *opaque, > @@ -3075,7 +3077,6 @@ int main(int argc, char **argv, char **envp) > os_setup_early_signal_handling(); > > module_call_init(MODULE_INIT_MACHINE); > - machine_class = find_default_machine(); > cpu_model = NULL; > snapshot = 0; > cyls = heads = secs = 0; > @@ -4066,7 +4067,7 @@ int main(int argc, char **argv, char **envp) > > replay_configure(icount_opts); > > - set_machine_options(&machine_class); > + machine_class = select_machine(find_default_machine()); I like the approach "going all the way", I would even hide the call to find_default_machine inside select_machine. Reviewed-by: Marcel Apfelbaum <marcel@redhat.com> Thanks, Marcel > > set_memory_options(&ram_slots, &maxram_size, machine_class); > >
Laszlo Ersek <lersek@redhat.com> writes: > On 02/16/16 15:57, Markus Armbruster wrote: >> We set machine_class to the default first, and update it to the real >> one later. Any use of machine_class in between is almost certainly >> wrong. Set it once and for all instead. >> >> Signed-off-by: Markus Armbruster <armbru@redhat.com> >> --- >> vl.c | 11 ++++++----- >> 1 file changed, 6 insertions(+), 5 deletions(-) >> >> diff --git a/vl.c b/vl.c >> index 7918e9f..098728c 100644 >> --- a/vl.c >> +++ b/vl.c >> @@ -2748,8 +2748,9 @@ static const QEMUOption *lookup_opt(int argc, char **argv, >> return popt; >> } >> >> -static void set_machine_options(MachineClass **machine_class) >> +static MachineClass *select_machine(MachineClass *dflt) >> { >> + MachineClass *machine_class = dflt; >> const char *optarg; >> QemuOpts *opts; >> Location loc; >> @@ -2761,16 +2762,17 @@ static void set_machine_options(MachineClass **machine_class) >> >> optarg = qemu_opt_get(opts, "type"); >> if (optarg) { >> - *machine_class = machine_parse(optarg); >> + machine_class = machine_parse(optarg); >> } >> >> - if (*machine_class == NULL) { >> + if (!machine_class) { >> error_report("No machine specified, and there is no default"); >> error_printf("Use -machine help to list supported machines\n"); >> exit(1); >> } >> >> loc_pop(&loc); >> + return machine_class; >> } >> >> static int machine_set_property(void *opaque, >> @@ -3075,7 +3077,6 @@ int main(int argc, char **argv, char **envp) >> os_setup_early_signal_handling(); >> >> module_call_init(MODULE_INIT_MACHINE); >> - machine_class = find_default_machine(); >> cpu_model = NULL; >> snapshot = 0; >> cyls = heads = secs = 0; >> @@ -4066,7 +4067,7 @@ int main(int argc, char **argv, char **envp) >> >> replay_configure(icount_opts); >> >> - set_machine_options(&machine_class); >> + machine_class = select_machine(find_default_machine()); >> >> set_memory_options(&ram_slots, &maxram_size, machine_class); >> >> > > Sorry for not being more responsive in this thread. I read through the > patches now (including this one), and they look good to me. > > I have one suggestion for the commit message of this patch, after > checking "vl.c" (and keeping the earlier patches of the series in mind): > after the statement > > Any use of machine_class in between is almost certainly wrong > > can you please observe > > (there are no such uses right now) > > ? Done. > series > Reviewed-by: Laszlo Ersek <lersek@redhat.com> Thanks!
diff --git a/vl.c b/vl.c index 7918e9f..098728c 100644 --- a/vl.c +++ b/vl.c @@ -2748,8 +2748,9 @@ static const QEMUOption *lookup_opt(int argc, char **argv, return popt; } -static void set_machine_options(MachineClass **machine_class) +static MachineClass *select_machine(MachineClass *dflt) { + MachineClass *machine_class = dflt; const char *optarg; QemuOpts *opts; Location loc; @@ -2761,16 +2762,17 @@ static void set_machine_options(MachineClass **machine_class) optarg = qemu_opt_get(opts, "type"); if (optarg) { - *machine_class = machine_parse(optarg); + machine_class = machine_parse(optarg); } - if (*machine_class == NULL) { + if (!machine_class) { error_report("No machine specified, and there is no default"); error_printf("Use -machine help to list supported machines\n"); exit(1); } loc_pop(&loc); + return machine_class; } static int machine_set_property(void *opaque, @@ -3075,7 +3077,6 @@ int main(int argc, char **argv, char **envp) os_setup_early_signal_handling(); module_call_init(MODULE_INIT_MACHINE); - machine_class = find_default_machine(); cpu_model = NULL; snapshot = 0; cyls = heads = secs = 0; @@ -4066,7 +4067,7 @@ int main(int argc, char **argv, char **envp) replay_configure(icount_opts); - set_machine_options(&machine_class); + machine_class = select_machine(find_default_machine()); set_memory_options(&ram_slots, &maxram_size, machine_class);
We set machine_class to the default first, and update it to the real one later. Any use of machine_class in between is almost certainly wrong. Set it once and for all instead. Signed-off-by: Markus Armbruster <armbru@redhat.com> --- vl.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-)