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| author | Jan Kiszka <jan.kiszka@siemens.com> | 2008-10-20 12:20:03 +0400 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2008-12-31 17:51:47 +0300 |
| commit | cc6e462cd54e64858ea25816df87d033229efe56 (patch) | |
| tree | 3f34b8be2ec3eb63e06c223b1d75d7068a717318 /arch/x86/include | |
| parent | 8fdb2351d51b040146f10a624387bbd102d851c0 (diff) | |
| download | linux-cc6e462cd54e64858ea25816df87d033229efe56.tar.xz | |
KVM: x86: Optimize NMI watchdog delivery
As suggested by Avi, this patch introduces a counter of VCPUs that have
LVT0 set to NMI mode. Only if the counter > 0, we push the PIT ticks via
all LAPIC LVT0 lines to enable NMI watchdog support.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Acked-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 59c3ae10de6c..09e6c56572cb 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -361,6 +361,7 @@ struct kvm_arch{ struct kvm_ioapic *vioapic; struct kvm_pit *vpit; struct hlist_head irq_ack_notifier_list; + int vapics_in_nmi_mode; int round_robin_prev_vcpu; unsigned int tss_addr; |