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hw/misc/pvpanic: add support for normal shutdowns

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Shutdown requests are normally hardware dependent.
By extending pvpanic to also handle shutdown requests, guests can
submit such requests with an easily implementable and cross-platform
mechanism.

Acked-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Thomas Weißschuh <thomas@t-8ch.de>
Message-Id: <20240527-pvpanic-shutdown-v8-5-5a28ec02558b@t-8ch.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Thomas Weißschuh 2024-05-27 08:27:51 +02:00 committed by Michael S. Tsirkin
parent 462dc749c1
commit 6269086b01
4 changed files with 14 additions and 1 deletions
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5
hw/misc/pvpanic.c
View File

@ -41,6 +41,11 @@ static void handle_event(int event)
qemu_system_guest_crashloaded(NULL);
return;
}
if (event & PVPANIC_SHUTDOWN) {
qemu_system_guest_pvshutdown();
return;
}
}
/* return supported events on read */

4
include/hw/misc/pvpanic.h
View File

@ -20,7 +20,9 @@
#include "standard-headers/misc/pvpanic.h"
#define PVPANIC_EVENTS (PVPANIC_PANICKED | PVPANIC_CRASH_LOADED)
#define PVPANIC_EVENTS (PVPANIC_PANICKED | \
PVPANIC_CRASH_LOADED | \
PVPANIC_SHUTDOWN)
#define TYPE_PVPANIC_ISA_DEVICE "pvpanic"
#define TYPE_PVPANIC_PCI_DEVICE "pvpanic-pci"

1
include/sysemu/runstate.h
View File

@ -104,6 +104,7 @@ void qemu_system_killed(int signal, pid_t pid);
void qemu_system_reset(ShutdownCause reason);
void qemu_system_guest_panicked(GuestPanicInformation *info);
void qemu_system_guest_crashloaded(GuestPanicInformation *info);
void qemu_system_guest_pvshutdown(void);
bool qemu_system_dump_in_progress(void);
#endif

5
system/runstate.c
View File

@ -584,6 +584,11 @@ void qemu_system_guest_crashloaded(GuestPanicInformation *info)
qapi_free_GuestPanicInformation(info);
}
void qemu_system_guest_pvshutdown(void)
{
qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
}
void qemu_system_reset_request(ShutdownCause reason)
{
if (reboot_action == REBOOT_ACTION_SHUTDOWN &&