From 894a9c5543abf6f88d36dc1b9f5d90f35db09cb3 Mon Sep 17 00:00:00 2001 From: Marcelo Tosatti Date: Tue, 23 Jun 2009 15:05:14 -0300 Subject: KVM: x86: missing locking in PIT/IRQCHIP/SET_BSP_CPU ioctl paths Correct missing locking in a few places in x86's vm_ioctl handling path. Signed-off-by: Marcelo Tosatti Signed-off-by: Avi Kivity --- virt/kvm/kvm_main.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'virt') diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 8361662e7e0a..f1e2e8c373c6 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -2274,10 +2274,12 @@ static long kvm_vm_ioctl(struct file *filp, #ifdef CONFIG_KVM_APIC_ARCHITECTURE case KVM_SET_BOOT_CPU_ID: r = 0; + mutex_lock(&kvm->lock); if (atomic_read(&kvm->online_vcpus) != 0) r = -EBUSY; else kvm->bsp_vcpu_id = arg; + mutex_unlock(&kvm->lock); break; #endif default: -- cgit v1.2.3