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, 6 insertions, 1 deletions

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 9c68a650f57e..2ae0c3923293 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -904,13 +904,18 @@ static struct kvm_vcpu *svm_create_vcpu(struct kvm *kvm, unsigned int id)
         svm->asid_generation = 0;
         init_vmcb(svm);
 
-        fx_init(&svm->vcpu);
+        err = fx_init(&svm->vcpu);
+        if (err)
+                goto free_page4;
+
         svm->vcpu.arch.apic_base = 0xfee00000 | MSR_IA32_APICBASE_ENABLE;
         if (kvm_vcpu_is_bsp(&svm->vcpu))
                 svm->vcpu.arch.apic_base |= MSR_IA32_APICBASE_BSP;
 
         return &svm->vcpu;
 
+free_page4:
+        __free_page(hsave_page);
 free_page3:
         __free_pages(nested_msrpm_pages, MSRPM_ALLOC_ORDER);
 free_page2: