From ed603a94999be31d6606e96083e99f45f4ff63c9 Mon Sep 17 00:00:00 2001 From: Thomas Huth Date: Fri, 11 Nov 2022 15:13:23 +0100 Subject: [PATCH] util/qemu-config: Fix "query-command-line-options" to provide the right values The "query-command-line-options" command uses a hand-crafted list of options that should be returned for the "machine" parameter. This is pretty much out of sync with reality, for example settings like "kvm_shadow_mem" or "accel" are not parameters for the machine anymore. Also, there is no distinction between the targets here, so e.g. the s390x-specific values like "loadparm" in this list also show up with the other targets like x86_64. Let's fix this now by geting rid of the hand-crafted list and by querying the properties of the machine classes instead to assemble the list. Fixes: 0a7cf217d8 ("fix regression of qmp_query_command_line_options") Message-Id: <20221111141323.246267-1-thuth@redhat.com> Signed-off-by: Thomas Huth --- util/qemu-config.c | 168 +++++++++++++++++++++------------------------ 1 file changed, 77 insertions(+), 91 deletions(-) diff --git a/util/qemu-config.c b/util/qemu-config.c index 433488aa5624b..cf47e8a3d0aa6 100644 --- a/util/qemu-config.c +++ b/util/qemu-config.c @@ -8,6 +8,7 @@ #include "qemu/error-report.h" #include "qemu/option.h" #include "qemu/config-file.h" +#include "hw/boards.h" static QemuOptsList *vm_config_groups[48]; static QemuOptsList *drive_config_groups[5]; @@ -149,97 +150,82 @@ static CommandLineParameterInfoList *get_drive_infolist(void) return head; } -/* restore machine options that are now machine's properties */ -static QemuOptsList machine_opts = { - .merge_lists = true, - .head = QTAILQ_HEAD_INITIALIZER(machine_opts.head), - .desc = { - { - .name = "type", - .type = QEMU_OPT_STRING, - .help = "emulated machine" - },{ - .name = "accel", - .type = QEMU_OPT_STRING, - .help = "accelerator list", - },{ - .name = "kernel_irqchip", - .type = QEMU_OPT_BOOL, - .help = "use KVM in-kernel irqchip", - },{ - .name = "kvm_shadow_mem", - .type = QEMU_OPT_SIZE, - .help = "KVM shadow MMU size", - },{ - .name = "kernel", - .type = QEMU_OPT_STRING, - .help = "Linux kernel image file", - },{ - .name = "initrd", - .type = QEMU_OPT_STRING, - .help = "Linux initial ramdisk file", - },{ - .name = "append", - .type = QEMU_OPT_STRING, - .help = "Linux kernel command line", - },{ - .name = "dtb", - .type = QEMU_OPT_STRING, - .help = "Linux kernel device tree file", - },{ - .name = "dumpdtb", - .type = QEMU_OPT_STRING, - .help = "Dump current dtb to a file and quit", - },{ - .name = "phandle_start", - .type = QEMU_OPT_NUMBER, - .help = "The first phandle ID we may generate dynamically", - },{ - .name = "dt_compatible", - .type = QEMU_OPT_STRING, - .help = "Overrides the \"compatible\" property of the dt root node", - },{ - .name = "dump-guest-core", - .type = QEMU_OPT_BOOL, - .help = "Include guest memory in a core dump", - },{ - .name = "mem-merge", - .type = QEMU_OPT_BOOL, - .help = "enable/disable memory merge support", - },{ - .name = "usb", - .type = QEMU_OPT_BOOL, - .help = "Set on/off to enable/disable usb", - },{ - .name = "firmware", - .type = QEMU_OPT_STRING, - .help = "firmware image", - },{ - .name = "iommu", - .type = QEMU_OPT_BOOL, - .help = "Set on/off to enable/disable Intel IOMMU (VT-d)", - },{ - .name = "suppress-vmdesc", - .type = QEMU_OPT_BOOL, - .help = "Set on to disable self-describing migration", - },{ - .name = "aes-key-wrap", - .type = QEMU_OPT_BOOL, - .help = "enable/disable AES key wrapping using the CPACF wrapping key", - },{ - .name = "dea-key-wrap", - .type = QEMU_OPT_BOOL, - .help = "enable/disable DEA key wrapping using the CPACF wrapping key", - },{ - .name = "loadparm", - .type = QEMU_OPT_STRING, - .help = "Up to 8 chars in set of [A-Za-z0-9. ](lower case chars" - " converted to upper case) to pass to machine" - " loader, boot manager, and guest kernel", - }, - { /* End of list */ } +static CommandLineParameterInfo *objprop_to_cmdline_prop(ObjectProperty *prop) +{ + CommandLineParameterInfo *info; + + info = g_malloc0(sizeof(*info)); + info->name = g_strdup(prop->name); + + if (g_str_equal(prop->type, "bool") || g_str_equal(prop->type, "OnOffAuto")) { + info->type = COMMAND_LINE_PARAMETER_TYPE_BOOLEAN; + } else if (g_str_equal(prop->type, "int")) { + info->type = COMMAND_LINE_PARAMETER_TYPE_NUMBER; + } else if (g_str_equal(prop->type, "size")) { + info->type = COMMAND_LINE_PARAMETER_TYPE_SIZE; + } else { + info->type = COMMAND_LINE_PARAMETER_TYPE_STRING; } -}; + + if (prop->description) { + info->has_help = true; + info->help = g_strdup(prop->description); + } + + return info; +} + +static CommandLineParameterInfoList *query_all_machine_properties(void) +{ + CommandLineParameterInfoList *params = NULL, *clpiter; + CommandLineParameterInfo *info; + GSList *machines, *curr_mach; + ObjectPropertyIterator op_iter; + ObjectProperty *prop; + bool is_new; + + machines = object_class_get_list(TYPE_MACHINE, false); + assert(machines); + + /* Loop over all machine classes */ + for (curr_mach = machines; curr_mach; curr_mach = curr_mach->next) { + object_class_property_iter_init(&op_iter, curr_mach->data); + /* ... and over the properties of each machine: */ + while ((prop = object_property_iter_next(&op_iter))) { + if (!prop->set) { + continue; + } + /* + * Check whether the property has already been put into the list + * (via another machine class) + */ + is_new = true; + for (clpiter = params; clpiter != NULL; clpiter = clpiter->next) { + if (g_str_equal(clpiter->value->name, prop->name)) { + is_new = false; + break; + } + } + /* If it hasn't been added before, add it now to the list */ + if (is_new) { + info = objprop_to_cmdline_prop(prop); + QAPI_LIST_PREPEND(params, info); + } + } + } + + g_slist_free(machines); + + /* Add entry for the "type" parameter */ + info = g_malloc0(sizeof(*info)); + info->name = g_strdup("type"); + info->type = COMMAND_LINE_PARAMETER_TYPE_STRING; + info->has_help = true; + info->help = g_strdup("machine type"); + QAPI_LIST_PREPEND(params, info); + + return params; +} CommandLineOptionInfoList *qmp_query_command_line_options(bool has_option, const char *option, @@ -266,7 +252,7 @@ CommandLineOptionInfoList *qmp_query_command_line_options(bool has_option, if (!has_option || !strcmp(option, "machine")) { info = g_malloc0(sizeof(*info)); info->option = g_strdup("machine"); - info->parameters = query_option_descs(machine_opts.desc); + info->parameters = query_all_machine_properties(); QAPI_LIST_PREPEND(conf_list, info); }