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plugins: add API for registering discontinuity callbacks

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The plugin API allows registration of callbacks for a variety of VCPU
related events, such as VCPU reset, idle and resume. In addition to
those events, we recently defined discontinuity events, which include
traps.

This change introduces a function to register callbacks for these
events. We define one distinct plugin event type for each type of
discontinuity, granting fine control to plugins in term of which events
they receive.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Julian Ganz <neither@nut.email>
Message-ID: <20251027110344.2289945-9-alex.bennee@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
This commit is contained in:
Julian Ganz
2025-10-27 11:03:15 +00:00
committed by Alex Bennée
parent a8b477239e
commit aac73d85d2
3 changed files with 34 additions and 0 deletions
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15
plugins/core.c
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@@ -569,6 +569,21 @@ void qemu_plugin_register_vcpu_resume_cb(qemu_plugin_id_t id,
plugin_register_cb(id, QEMU_PLUGIN_EV_VCPU_RESUME, cb);
}
void qemu_plugin_register_vcpu_discon_cb(qemu_plugin_id_t id,
enum qemu_plugin_discon_type type,
qemu_plugin_vcpu_discon_cb_t cb)
{
if (type & QEMU_PLUGIN_DISCON_INTERRUPT) {
plugin_register_cb(id, QEMU_PLUGIN_EV_VCPU_INTERRUPT, cb);
}
if (type & QEMU_PLUGIN_DISCON_EXCEPTION) {
plugin_register_cb(id, QEMU_PLUGIN_EV_VCPU_EXCEPTION, cb);
}
if (type & QEMU_PLUGIN_DISCON_HOSTCALL) {
plugin_register_cb(id, QEMU_PLUGIN_EV_VCPU_HOSTCALL, cb);
}
}
void qemu_plugin_register_flush_cb(qemu_plugin_id_t id,
qemu_plugin_simple_cb_t cb)
{