Often when a guest is stopped from the qemu console, it will report spurious soft lockup warnings on resume. There are kernel patches being discussed that will give the host the ability to tell the guest that it is being stopped and should ignore the soft lockup warning that generates.
Signed-off-by: Eric B Munson <[email protected]> Cc: Avi Kivity <[email protected]> Cc: Marcelo Tosatti <[email protected]> Cc: Jan Kiszka <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] --- Changes from V2: Move ioctl into hw/kvmclock.c so as other arches can use it as it is implemented Changes from V1: Remove unnecessary encapsulating function hw/kvmclock.c | 24 ++++++++++++++++++++++++ 1 files changed, 24 insertions(+), 0 deletions(-) diff --git a/hw/kvmclock.c b/hw/kvmclock.c index 5388bc4..756839f 100644 --- a/hw/kvmclock.c +++ b/hw/kvmclock.c @@ -16,6 +16,7 @@ #include "sysbus.h" #include "kvm.h" #include "kvmclock.h" +#include "cpu-all.h" #include <linux/kvm.h> #include <linux/kvm_para.h> @@ -69,11 +70,34 @@ static void kvmclock_vm_state_change(void *opaque, int running, } } +static void kvmclock_vm_state_change_vcpu(void *opaque, int running, + RunState state) +{ + int ret; + CPUState *penv = first_cpu; + + if (running) { + while (penv) { + ret = kvm_vcpu_ioctl(penv, KVM_GUEST_PAUSED, 0); + if (ret) { + if (ret != ENOSYS) { + fprintf(stderr, + "kvmclock_vm_state_change_vcpu: %s\n", + strerror(-ret)); + } + return; + } + penv = (CPUState *)penv->next_cpu; + } + } +} + static int kvmclock_init(SysBusDevice *dev) { KVMClockState *s = FROM_SYSBUS(KVMClockState, dev); qemu_add_vm_change_state_handler(kvmclock_vm_state_change, s); + qemu_add_vm_change_state_handler(kvmclock_vm_state_change_vcpu, NULL); return 0; } -- 1.7.5.4 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
