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| author |   Jan Kiszka <jan.kiszka@siemens.com> | 2010-05-25 16:01:50 +0200 |
|---|---|---|
| committer |   Avi Kivity <avi@redhat.com> | 2010-08-01 10:39:22 +0300 |
| commit | 10ab25cd6bf7ee4e5a55d81f203f7dc1a855c27e (patch) | |
| tree | 89b1f58c09a102f1aa5c9b549c13e1f9a0a3ee3d /arch | |
| parent | KVM: SVM: Fix EFER.LME being stripped (diff) | |
| download | linux-dev-10ab25cd6bf7ee4e5a55d81f203f7dc1a855c27e.tar.xz linux-dev-10ab25cd6bf7ee4e5a55d81f203f7dc1a855c27e.zip | |
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 2 | ||||
| -rw-r--r-- | arch/x86/kvm/svm.c | 7 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx.c | 4 | ||||
| -rw-r--r-- | arch/x86/kvm/x86.c | 11 |
4 files changed, 19 insertions, 5 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index d08bb4a202de..0cd0f2923af5 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -624,7 +624,7 @@ int kvm_pic_set_irq(void *opaque, int irq, int level); void kvm_inject_nmi(struct kvm_vcpu *vcpu); -void fx_init(struct kvm_vcpu *vcpu); +int fx_init(struct kvm_vcpu *vcpu); void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu); void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa, 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: diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 9c3ffc5fde44..e71c731433ee 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -2659,7 +2659,9 @@ static int vmx_vcpu_reset(struct kvm_vcpu *vcpu) msr |= MSR_IA32_APICBASE_BSP; kvm_set_apic_base(&vmx->vcpu, msr); - fx_init(&vmx->vcpu); + ret = fx_init(&vmx->vcpu); + if (ret != 0) + goto out; seg_setup(VCPU_SREG_CS); /* 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); |