KVM: x86: Propagate fpu_alloc errors

Memory allocation may fail. Propagate such errors.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 9 insertions, 2 deletions

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 033b9c207f93..e6e0d7781af7 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -5114,12 +5114,19 @@ int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
         return 0;
 }
 
-void fx_init(struct kvm_vcpu *vcpu)
+int fx_init(struct kvm_vcpu *vcpu)
 {
-        fpu_alloc(&vcpu->arch.guest_fpu);
+        int err;
+
+        err = fpu_alloc(&vcpu->arch.guest_fpu);
+        if (err)
+                return err;
+
         fpu_finit(&vcpu->arch.guest_fpu);
 
         vcpu->arch.cr0 |= X86_CR0_ET;
+
+        return 0;
 }
 EXPORT_SYMBOL_GPL(fx_init);