>From dd0f4f43e038d33472dbbf6d6b75d4d84d1bc3f9 Mon Sep 17 00:00:00 2001
From: Xiantao Zhang <xiantao.zhang@xxxxxxxxx>
Date: Thu, 23 Oct 2008 15:02:52 +0800
Subject: [PATCH] KVM: ia64: Ensure SIGINT delivered to main thread (vcpu 0).
Before APs going to block status, it should make sure SIGINT is
masked, otherwise, it may eat SIGINT from user killing the guest, and
results in Qemu hanging there, becasue main thread can't get it to free
guest's resource.
Signed-off-by: Xiantao Zhang <xiantao.zhang@xxxxxxxxx>
---
arch/ia64/kvm/kvm-ia64.c | 12 ++++++------
1 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c
index 54a90b8..6b1e31b 100644
--- a/arch/ia64/kvm/kvm-ia64.c
+++ b/arch/ia64/kvm/kvm-ia64.c
@@ -673,16 +673,16 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
vcpu_load(vcpu);
+ if (vcpu->sigset_active)
+ sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
+
if (unlikely(vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)) {
kvm_vcpu_block(vcpu);
clear_bit(KVM_REQ_UNHALT, &vcpu->requests);
- vcpu_put(vcpu);
- return -EAGAIN;
+ r = -EAGAIN;
+ goto out;
}
- if (vcpu->sigset_active)
- sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
-
if (vcpu->mmio_needed) {
memcpy(vcpu->mmio_data, kvm_run->mmio.data, 8);
kvm_set_mmio_data(vcpu);
@@ -690,7 +690,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
vcpu->mmio_needed = 0;
}
r = __vcpu_run(vcpu, kvm_run);
-
+out:
if (vcpu->sigset_active)
sigprocmask(SIG_SETMASK, &sigsaved, NULL);
--
1.6.0
Attachment:
0002-KVM-ia64-Ensure-SIGINT-delivered-to-main-thread-v.patch
Description: 0002-KVM-ia64-Ensure-SIGINT-delivered-to-main-thread-v.patch
