When a host stops or suspends a VM it will set a flag to show this. The watchdog will use these functions to determine if a softlockup is real, or the result of a suspended VM.
Signed-off-by: Eric B Munson <[email protected]> --- arch/x86/include/asm/pvclock.h | 3 +++ arch/x86/kernel/kvmclock.c | 12 ++++++++++++ 2 files changed, 15 insertions(+), 0 deletions(-) diff --git a/arch/x86/include/asm/pvclock.h b/arch/x86/include/asm/pvclock.h index a518c0a..a9e9b4f 100644 --- a/arch/x86/include/asm/pvclock.h +++ b/arch/x86/include/asm/pvclock.h @@ -13,6 +13,9 @@ void pvclock_read_wallclock(struct pvclock_wall_clock *wall, struct timespec *ts); void pvclock_resume(void); +bool kvm_check_host_stopped(void); +void kvm_clear_host_stopped(void); + /* * Scale a 64-bit delta by scaling and multiplying by a 32-bit fraction, * yielding a 64-bit result. diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c index c1a0188..5a42582 100644 --- a/arch/x86/kernel/kvmclock.c +++ b/arch/x86/kernel/kvmclock.c @@ -113,6 +113,18 @@ static void kvm_get_preset_lpj(void) preset_lpj = lpj; } +bool kvm_check_host_stopped() +{ + struct pvclock_vcpu_time_info *src = &per_cpu(hv_clock, 0); + return (src->flags & PVCLOCK_STOPPED) != 0; +} + +void kvm_clear_host_stopped() +{ + struct pvclock_vcpu_time_info *src = &per_cpu(hv_clock, 0); + src->flags = src->flags & (~PVCLOCK_STOPPED); +} + static struct clocksource kvm_clock = { .name = "kvm-clock", .read = kvm_clock_get_cycles, -- 1.7.4.1 -- To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
