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.
Signed-off-by: Thomas Weißschuh <tho...@t-8ch.de> --- docs/specs/pvpanic.rst | 2 ++ hw/misc/pvpanic.c | 5 +++++ include/hw/misc/pvpanic.h | 2 +- include/standard-headers/linux/pvpanic.h | 1 + 4 files changed, 9 insertions(+), 1 deletion(-) diff --git a/docs/specs/pvpanic.rst b/docs/specs/pvpanic.rst index f894bc19555f..796cc0348a38 100644 --- a/docs/specs/pvpanic.rst +++ b/docs/specs/pvpanic.rst @@ -29,6 +29,8 @@ bit 1 a guest panic has happened and will be handled by the guest; the host should record it or report it, but should not affect the execution of the guest. +bit 2 + a guest shutdown has happened and should be processed by the host PCI Interface ------------- diff --git a/hw/misc/pvpanic.c b/hw/misc/pvpanic.c index a4982cc5928e..246f9ae4e992 100644 --- a/hw/misc/pvpanic.c +++ b/hw/misc/pvpanic.c @@ -40,6 +40,11 @@ static void handle_event(int event) qemu_system_guest_crashloaded(NULL); return; } + + if (event & PVPANIC_SHUTDOWN) { + qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); + return; + } } /* return supported events on read */ diff --git a/include/hw/misc/pvpanic.h b/include/hw/misc/pvpanic.h index 198047dc86ff..fa76ad93d998 100644 --- a/include/hw/misc/pvpanic.h +++ b/include/hw/misc/pvpanic.h @@ -23,7 +23,7 @@ #define TYPE_PVPANIC_PCI_DEVICE "pvpanic-pci" #define PVPANIC_IOPORT_PROP "ioport" -#define PVPANIC_EVENTS (PVPANIC_PANICKED | PVPANIC_CRASH_LOADED) +#define PVPANIC_EVENTS (PVPANIC_PANICKED | PVPANIC_CRASH_LOADED | PVPANIC_SHUTDOWN) /* * PVPanicState for any device type diff --git a/include/standard-headers/linux/pvpanic.h b/include/standard-headers/linux/pvpanic.h index 54b7485390d3..38e53ad45929 100644 --- a/include/standard-headers/linux/pvpanic.h +++ b/include/standard-headers/linux/pvpanic.h @@ -5,5 +5,6 @@ #define PVPANIC_PANICKED (1 << 0) #define PVPANIC_CRASH_LOADED (1 << 1) +#define PVPANIC_SHUTDOWN (1 << 2) #endif /* __PVPANIC_H__ */ -- 2.42.0