From: Cornelia Huck <cohuck@redhat.com> Implement the capability to query available ID register values by adding SYSREG_* options and values to the cpu model expansion for the host model, if available. Excerpt: (QEMU) query-cpu-model-expansion type=full model={"name":"host"} {"return": {"model": {"name": "host", "props": {"SYSREG_ID_AA64PFR0_EL1_EL3": 1224979098931106066, "SYSREG_ID_AA64ISAR2_EL1_CLRBHB": 0, ../.. So this allows the upper stack to detect available writable ID regs and the "host passthrough model" values. [CH: moved SYSREG_* values to host model] Signed-off-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com> --- target/arm/arm-qmp-cmds.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/target/arm/arm-qmp-cmds.c b/target/arm/arm-qmp-cmds.c index d201d319bd..5109aeb873 100644 --- a/target/arm/arm-qmp-cmds.c +++ b/target/arm/arm-qmp-cmds.c @@ -21,6 +21,7 @@ */ #include "qemu/osdep.h" +#include "qemu/error-report.h" #include "hw/boards.h" #include "kvm_arm.h" #include "qapi/error.h" @@ -218,6 +219,24 @@ CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type, } } + /* If writable ID regs are supported, add them as well */ + if (ARM_CPU(obj)->writable_id_regs == WRITABLE_ID_REGS_AVAIL) { + ObjectProperty *prop; + ObjectPropertyIterator iter; + + object_property_iter_init(&iter, obj); + + while ((prop = object_property_iter_next(&iter))) { + QObject *value; + + if (!g_str_has_prefix(prop->name, "SYSREG_")) { + continue; + } + value = object_property_get_qobject(obj, prop->name, &error_abort); + qdict_put_obj(qdict_out, prop->name, value); + } + } + if (!qdict_size(qdict_out)) { qobject_unref(qdict_out); } else { -- 2.33.0