On 22/09/2022 11.29, Paolo Bonzini wrote:
> This was deprecated in 6.2 and is ready to go. It removes quite a bit
> of code that handled the registration of watchdog models.
>
> Signed-off-by: Paolo Bonzini <pbonzini(a)redhat.com>
> ---
> docs/about/deprecated.rst | 5 ----
> docs/about/removed-features.rst | 5 ++++
> hw/watchdog/sbsa_gwdt.c | 6 -----
> hw/watchdog/watchdog.c | 45 ---------------------------------
> hw/watchdog/wdt_aspeed.c | 6 -----
> hw/watchdog/wdt_diag288.c | 6 -----
> hw/watchdog/wdt_i6300esb.c | 6 -----
> hw/watchdog/wdt_ib700.c | 6 -----
> hw/watchdog/wdt_imx2.c | 6 -----
> include/sysemu/watchdog.h | 12 ---------
> qemu-options.hx | 33 ++----------------------
> softmmu/vl.c | 16 ------------
> 12 files changed, 7 insertions(+), 145 deletions(-)
Nice clean-up!
Reviewed-by: Thomas Huth <thuth(a)redhat.com>
> diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst
> index a72fedba5f..93affe3669 100644
> --- a/docs/about/deprecated.rst
> +++ b/docs/about/deprecated.rst
> @@ -81,11 +81,6 @@ the process listing. This is replaced by the new ``password-secret``
> option which lets the password be securely provided on the command
> line using a ``secret`` object instance.
>
> -``-watchdog`` (since 6.2)
> -'''''''''''''''''''''''''
> -
> -Use ``-device`` instead.
> -
> ``-smp`` ("parameter=0" SMP configurations) (since 6.2)
> '''''''''''''''''''''''''''''''''''''''''''''''''''''''
>
> diff --git a/docs/about/removed-features.rst b/docs/about/removed-features.rst
> index a4aa3dca69..63df9848fd 100644
> --- a/docs/about/removed-features.rst
> +++ b/docs/about/removed-features.rst
> @@ -403,6 +403,11 @@ Sound card devices should be created using ``-device`` or ``-audio``.
> The exception is ``pcspk`` which can be activated using ``-machine
> pcspk-audiodev=<name>``.
>
> +``-watchdog`` (since 7.2)
> +'''''''''''''''''''''''''
> +
> +Use ``-device`` instead.
> +
>
> QEMU Machine Protocol (QMP) commands
> ------------------------------------
> diff --git a/hw/watchdog/sbsa_gwdt.c b/hw/watchdog/sbsa_gwdt.c
> index e49cacd0e2..7aa57a8c51 100644
> --- a/hw/watchdog/sbsa_gwdt.c
> +++ b/hw/watchdog/sbsa_gwdt.c
> @@ -24,11 +24,6 @@
> #include "qemu/log.h"
> #include "qemu/module.h"
>
> -static WatchdogTimerModel model = {
> - .wdt_name = TYPE_WDT_SBSA,
> - .wdt_description = "SBSA-compliant generic watchdog device",
> -};
> -
> static const VMStateDescription vmstate_sbsa_gwdt = {
> .name = "sbsa-gwdt",
> .version_id = 1,
> @@ -287,7 +282,6 @@ static const TypeInfo wdt_sbsa_gwdt_info = {
>
> static void wdt_sbsa_gwdt_register_types(void)
> {
> - watchdog_add_model(&model);
> type_register_static(&wdt_sbsa_gwdt_info);
> }
>
> diff --git a/hw/watchdog/watchdog.c b/hw/watchdog/watchdog.c
> index 1437e6c5b6..b132546516 100644
> --- a/hw/watchdog/watchdog.c
> +++ b/hw/watchdog/watchdog.c
> @@ -31,51 +31,6 @@
> #include "hw/nmi.h"
> #include "qemu/help_option.h"
>
> -static WatchdogAction watchdog_action = WATCHDOG_ACTION_RESET;
> -static QLIST_HEAD(, WatchdogTimerModel) watchdog_list;
> -
> -void watchdog_add_model(WatchdogTimerModel *model)
> -{
> - QLIST_INSERT_HEAD(&watchdog_list, model, entry);
> -}
> -
> -/* Returns:
> - * 0 = continue
> - * 1 = exit program with error
> - * 2 = exit program without error
> - */
> -int select_watchdog(const char *p)
> -{
> - WatchdogTimerModel *model;
> - QemuOpts *opts;
> -
> - /* -watchdog ? lists available devices and exits cleanly. */
> - if (is_help_option(p)) {
> - QLIST_FOREACH(model, &watchdog_list, entry) {
> - fprintf(stderr, "\t%s\t%s\n",
> - model->wdt_name, model->wdt_description);
> - }
> - return 2;
> - }
> -
> - QLIST_FOREACH(model, &watchdog_list, entry) {
> - if (strcasecmp(model->wdt_name, p) == 0) {
> - /* add the device */
> - opts = qemu_opts_create(qemu_find_opts("device"), NULL, 0,
> - &error_abort);
> - qemu_opt_set(opts, "driver", p, &error_abort);
> - return 0;
> - }
> - }
> -
> - fprintf(stderr, "Unknown -watchdog device. Supported devices are:\n");
> - QLIST_FOREACH(model, &watchdog_list, entry) {
> - fprintf(stderr, "\t%s\t%s\n",
> - model->wdt_name, model->wdt_description);
> - }
> - return 1;
> -}
> -
> WatchdogAction get_watchdog_action(void)
> {
> return watchdog_action;
> diff --git a/hw/watchdog/wdt_aspeed.c b/hw/watchdog/wdt_aspeed.c
> index 31855afdf4..d753693a2e 100644
> --- a/hw/watchdog/wdt_aspeed.c
> +++ b/hw/watchdog/wdt_aspeed.c
> @@ -202,11 +202,6 @@ static void aspeed_wdt_write(void *opaque, hwaddr offset, uint64_t data,
> return;
> }
>
> -static WatchdogTimerModel model = {
> - .wdt_name = TYPE_ASPEED_WDT,
> - .wdt_description = "Aspeed watchdog device",
> -};
> -
> static const VMStateDescription vmstate_aspeed_wdt = {
> .name = "vmstate_aspeed_wdt",
> .version_id = 0,
> @@ -416,7 +411,6 @@ static const TypeInfo aspeed_1030_wdt_info = {
>
> static void wdt_aspeed_register_types(void)
> {
> - watchdog_add_model(&model);
> type_register_static(&aspeed_wdt_info);
> type_register_static(&aspeed_2400_wdt_info);
> type_register_static(&aspeed_2500_wdt_info);
> diff --git a/hw/watchdog/wdt_diag288.c b/hw/watchdog/wdt_diag288.c
> index 9e8882a11c..76d89fbf78 100644
> --- a/hw/watchdog/wdt_diag288.c
> +++ b/hw/watchdog/wdt_diag288.c
> @@ -19,11 +19,6 @@
> #include "migration/vmstate.h"
> #include "qemu/log.h"
>
> -static WatchdogTimerModel model = {
> - .wdt_name = TYPE_WDT_DIAG288,
> - .wdt_description = "diag288 device for s390x platform",
> -};
> -
> static const VMStateDescription vmstate_diag288 = {
> .name = "vmstate_diag288",
> .version_id = 0,
> @@ -138,7 +133,6 @@ static const TypeInfo wdt_diag288_info = {
>
> static void wdt_diag288_register_types(void)
> {
> - watchdog_add_model(&model);
> type_register_static(&wdt_diag288_info);
> }
>
> diff --git a/hw/watchdog/wdt_i6300esb.c b/hw/watchdog/wdt_i6300esb.c
> index f99a1c9d29..5693ec6a09 100644
> --- a/hw/watchdog/wdt_i6300esb.c
> +++ b/hw/watchdog/wdt_i6300esb.c
> @@ -457,11 +457,6 @@ static void i6300esb_exit(PCIDevice *dev)
> timer_free(d->timer);
> }
>
> -static WatchdogTimerModel model = {
> - .wdt_name = "i6300esb",
> - .wdt_description = "Intel 6300ESB",
> -};
> -
> static void i6300esb_class_init(ObjectClass *klass, void *data)
> {
> DeviceClass *dc = DEVICE_CLASS(klass);
> @@ -493,7 +488,6 @@ static const TypeInfo i6300esb_info = {
>
> static void i6300esb_register_types(void)
> {
> - watchdog_add_model(&model);
> type_register_static(&i6300esb_info);
> }
>
> diff --git a/hw/watchdog/wdt_ib700.c b/hw/watchdog/wdt_ib700.c
> index 91d1bdc0da..b116c3a3aa 100644
> --- a/hw/watchdog/wdt_ib700.c
> +++ b/hw/watchdog/wdt_ib700.c
> @@ -128,11 +128,6 @@ static void wdt_ib700_reset(DeviceState *dev)
> timer_del(s->timer);
> }
>
> -static WatchdogTimerModel model = {
> - .wdt_name = "ib700",
> - .wdt_description = "iBASE 700",
> -};
> -
> static void wdt_ib700_class_init(ObjectClass *klass, void *data)
> {
> DeviceClass *dc = DEVICE_CLASS(klass);
> @@ -153,7 +148,6 @@ static const TypeInfo wdt_ib700_info = {
>
> static void wdt_ib700_register_types(void)
> {
> - watchdog_add_model(&model);
> type_register_static(&wdt_ib700_info);
> }
>
> diff --git a/hw/watchdog/wdt_imx2.c b/hw/watchdog/wdt_imx2.c
> index c3128370b5..e776a2fbd4 100644
> --- a/hw/watchdog/wdt_imx2.c
> +++ b/hw/watchdog/wdt_imx2.c
> @@ -291,14 +291,8 @@ static const TypeInfo imx2_wdt_info = {
> .class_init = imx2_wdt_class_init,
> };
>
> -static WatchdogTimerModel model = {
> - .wdt_name = "imx2-watchdog",
> - .wdt_description = "i.MX2 Watchdog",
> -};
> -
> static void imx2_wdt_register_type(void)
> {
> - watchdog_add_model(&model);
> type_register_static(&imx2_wdt_info);
> }
> type_init(imx2_wdt_register_type)
> diff --git a/include/sysemu/watchdog.h b/include/sysemu/watchdog.h
> index d2d4901dbb..745c89b02b 100644
> --- a/include/sysemu/watchdog.h
> +++ b/include/sysemu/watchdog.h
> @@ -25,20 +25,8 @@
> #include "qemu/queue.h"
> #include "qapi/qapi-types-run-state.h"
>
> -struct WatchdogTimerModel {
> - QLIST_ENTRY(WatchdogTimerModel) entry;
> -
> - /* Short name of the device - used to select it on the command line. */
> - const char *wdt_name;
> - /* Longer description (eg. manufacturer and full model number). */
> - const char *wdt_description;
> -};
> -typedef struct WatchdogTimerModel WatchdogTimerModel;
> -
> /* in hw/watchdog.c */
> -int select_watchdog(const char *p);
> WatchdogAction get_watchdog_action(void);
> -void watchdog_add_model(WatchdogTimerModel *model);
> void watchdog_perform_action(void);
>
> #endif /* QEMU_WATCHDOG_H */
> diff --git a/qemu-options.hx b/qemu-options.hx
> index d8b5ce5b43..df4b8c8f1a 100644
> --- a/qemu-options.hx
> +++ b/qemu-options.hx
> @@ -4330,7 +4330,7 @@ SRST
>
> ``-action panic=none``
> ``-action reboot=shutdown,shutdown=pause``
> - ``-watchdog i6300esb -action watchdog=pause``
> + ``-device i6300esb -action watchdog=pause``
>
> ERST
>
> @@ -4448,35 +4448,6 @@ SRST
> specifies the snapshot name used to load the initial VM state.
> ERST
>
> -DEF("watchdog", HAS_ARG, QEMU_OPTION_watchdog, \
> - "-watchdog model\n" \
> - " enable virtual hardware watchdog [default=none]\n",
> - QEMU_ARCH_ALL)
> -SRST
> -``-watchdog model``
> - Create a virtual hardware watchdog device. Once enabled (by a guest
> - action), the watchdog must be periodically polled by an agent inside
> - the guest or else the guest will be restarted. Choose a model for
> - which your guest has drivers.
> -
> - The model is the model of hardware watchdog to emulate. Use
> - ``-watchdog help`` to list available hardware models. Only one
> - watchdog can be enabled for a guest.
> -
> - The following models may be available:
> -
> - ``ib700``
> - iBASE 700 is a very simple ISA watchdog with a single timer.
> -
> - ``i6300esb``
> - Intel 6300ESB I/O controller hub is a much more featureful
> - PCI-based dual-timer watchdog.
> -
> - ``diag288``
> - A virtual watchdog for s390x backed by the diagnose 288
> - hypercall (currently KVM only).
> -ERST
> -
> DEF("watchdog-action", HAS_ARG, QEMU_OPTION_watchdog_action, \
> "-watchdog-action reset|shutdown|poweroff|inject-nmi|pause|debug|none\n" \
> " action when watchdog fires [default=reset]\n",
> @@ -4498,7 +4469,7 @@ SRST
>
> Examples:
>
> - ``-watchdog i6300esb -watchdog-action pause``; \ ``-watchdog ib700``
> + ``-device i6300esb -watchdog-action pause``
>
> ERST
>
> diff --git a/softmmu/vl.c b/softmmu/vl.c
> index e62b9cc35d..b8788e765a 100644
> --- a/softmmu/vl.c
> +++ b/softmmu/vl.c
> @@ -53,7 +53,6 @@
> #include "hw/isa/isa.h"
> #include "hw/scsi/scsi.h"
> #include "hw/display/vga.h"
> -#include "sysemu/watchdog.h"
> #include "hw/firmware/smbios.h"
> #include "hw/acpi/acpi.h"
> #include "hw/xen/xen.h"
> @@ -181,7 +180,6 @@ static Chardev **serial_hds;
> static const char *log_mask;
> static const char *log_file;
> static bool list_data_dirs;
> -static const char *watchdog;
> static const char *qtest_chrdev;
> static const char *qtest_log;
>
> @@ -2329,12 +2327,6 @@ static void qemu_process_sugar_options(void)
> }
> object_register_sugar_prop("memory-backend", "prealloc", "on", false);
> }
> -
> - if (watchdog) {
> - int i = select_watchdog(watchdog);
> - if (i > 0)
> - exit (i == 1 ? 1 : 0);
> - }
> }
>
> /* -action processing */
> @@ -3107,14 +3099,6 @@ void qemu_init(int argc, char **argv, char **envp)
> default_monitor = 0;
> }
> break;
> - case QEMU_OPTION_watchdog:
> - if (watchdog) {
> - error_report("only one watchdog option may be given");
> - exit(1);
> - }
> - warn_report("-watchdog is deprecated; use -device instead.");
> - watchdog = optarg;
> - break;
> case QEMU_OPTION_action:
> olist = qemu_find_opts("action");
> if (!qemu_opts_parse_noisily(olist, optarg, false)) {
