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[1/2] kvm tools: prevent guest softlockup errors when pausing

Message ID 1343917764-28715-1-git-send-email-levinsasha928@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Sasha Levin Aug. 2, 2012, 2:29 p.m. UTC 
Use the new KVM_KVMCLOCK_CTRL ioctl to prevent guests from wrongfully
detecting lockups when in fact they were paused.

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
---
 tools/kvm/builtin-run.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
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Patch

diff --git a/tools/kvm/builtin-run.c b/tools/kvm/builtin-run.c
index 21d5f34..a4d900b 100644
--- a/tools/kvm/builtin-run.c
+++ b/tools/kvm/builtin-run.c
@@ -524,6 +524,7 @@  static void handle_pause(int fd, u32 type, u32 len, u8 *msg)
 		kvm__continue();
 	} else if (type == KVM_IPC_PAUSE && !is_paused) {
 		kvm->vm_state = KVM_VMSTATE_PAUSED;
+		ioctl(kvm->vm_fd, KVM_KVMCLOCK_CTRL);
 		kvm__pause();
 	} else {
 		return;