KVM: Move vcpu_load to arch-specific kvm_arch_vcpu_ioctl_get_regs

Move vcpu_load() and vcpu_put() into the architecture specific
implementations of kvm_arch_vcpu_ioctl_get_regs().
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/mips/kvm/mips.c

@@ -1162,6 +1162,8 @@ int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
 {
 	int i;
 
+	vcpu_load(vcpu);
+
 	for (i = 0; i < ARRAY_SIZE(vcpu->arch.gprs); i++)
 		regs->gpr[i] = vcpu->arch.gprs[i];
 
@@ -1169,6 +1171,7 @@ int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
 	regs->lo = vcpu->arch.lo;
 	regs->pc = vcpu->arch.pc;
 
+	vcpu_put(vcpu);
 	return 0;
 }
 

arch/powerpc/kvm/book3s.c

@@ -497,6 +497,8 @@ int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
 {
 	int i;
 
+	vcpu_load(vcpu);
+
 	regs->pc = kvmppc_get_pc(vcpu);
 	regs->cr = kvmppc_get_cr(vcpu);
 	regs->ctr = kvmppc_get_ctr(vcpu);
@@ -518,6 +520,7 @@ int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
 	for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
 		regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
 
+	vcpu_put(vcpu);
 	return 0;
 }
 

arch/powerpc/kvm/booke.c

@@ -1431,6 +1431,8 @@ int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
 {
 	int i;
 
+	vcpu_load(vcpu);
+
 	regs->pc = vcpu->arch.pc;
 	regs->cr = kvmppc_get_cr(vcpu);
 	regs->ctr = vcpu->arch.ctr;
@@ -1452,6 +1454,7 @@ int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
 	for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
 		regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
 
+	vcpu_put(vcpu);
 	return 0;
 }
 

arch/s390/kvm/kvm-s390.c

@@ -2715,7 +2715,9 @@ int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
 
 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
 {
+	vcpu_load(vcpu);
 	memcpy(&regs->gprs, &vcpu->run->s.regs.gprs, sizeof(regs->gprs));
+	vcpu_put(vcpu);
 	return 0;
 }
 

arch/x86/kvm/x86.c

@@ -7334,6 +7334,8 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
 
 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
 {
+	vcpu_load(vcpu);
+
 	if (vcpu->arch.emulate_regs_need_sync_to_vcpu) {
 		/*
 		 * We are here if userspace calls get_regs() in the middle of
@@ -7367,6 +7369,7 @@ int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
 	regs->rip = kvm_rip_read(vcpu);
 	regs->rflags = kvm_get_rflags(vcpu);
 
+	vcpu_put(vcpu);
 	return 0;
 }
 

virt/kvm/kvm_main.c

@@ -2583,9 +2583,7 @@ static long kvm_vcpu_ioctl(struct file *filp,
 		kvm_regs = kzalloc(sizeof(struct kvm_regs), GFP_KERNEL);
 		if (!kvm_regs)
 			goto out;
-		vcpu_load(vcpu);
 		r = kvm_arch_vcpu_ioctl_get_regs(vcpu, kvm_regs);
-		vcpu_put(vcpu);
 		if (r)
 			goto out_free1;
 		r = -EFAULT;