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Commit 10ab25cd authored by Jan Kiszka's avatar Jan Kiszka Committed by Avi Kivity
Browse files

KVM: x86: Propagate fpu_alloc errors 



Memory allocation may fail. Propagate such errors.

Signed-off-by: default avatarJan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: default avatarSheng Yang <sheng@linux.intel.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent 6dc696d4

arch/x86/include/asm/kvm_host.h

+1 −1
Original line number Diff line number Diff line
@@ -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,

arch/x86/kvm/svm.c

+6 −1
Original line number Diff line number Diff line
@@ -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:

arch/x86/kvm/vmx.c

+3 −1
Original line number Diff line number Diff line
@@ -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);

	/*

arch/x86/kvm/x86.c

+9 −2
Original line number Diff line number Diff line
@@ -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);