[kvm-devel] [patch 4/5] QEMU/KVM: ignore SIG_IPI signals in userspace

[Marcelo T. <mto...@re...>]

Otherwise a signal can be received in userspace and a vcpu goes back
to the kernel while it should stay still.

Signed-off-by: Marcelo Tosatti <mto...@re...>

Index: kvm-userspace.io/qemu/qemu-kvm.c
===================================================================
--- kvm-userspace.io.orig/qemu/qemu-kvm.c
+++ kvm-userspace.io/qemu/qemu-kvm.c
@@ -350,7 +350,6 @@ static void *ap_main_loop(void *_env)
     vcpu->env = env;
     vcpu->env->thread_id = kvm_get_thread_id();
     sigfillset(&signals);
-    sigdelset(&signals, SIG_IPI);
     sigprocmask(SIG_BLOCK, &signals, NULL);
     kvm_create_vcpu(kvm_context, env->cpu_index);
     kvm_qemu_init_env(env);

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