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arm/arm64: KVM: Introduce kvm_call_hyp_ret()

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Until now, we haven't differentiated between HYP calls that
have a return value and those who don't. As we're about to
change this, introduce kvm_call_hyp_ret(), and change all
call sites that actually make use of a return value.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
This commit is contained in:
Marc Zyngier
2019-01-05 15:49:50 +00:00
parent ee7930490a
commit 7aa8d14641
5 changed files with 8 additions and 4 deletions
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virt/kvm/arm/arm.c
+1 -1
View File
@@ -765,7 +765,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
ret = kvm_vcpu_run_vhe(vcpu);
kvm_arm_vhe_guest_exit();
} else {
ret = kvm_call_hyp(__kvm_vcpu_run_nvhe, vcpu);
ret = kvm_call_hyp_ret(__kvm_vcpu_run_nvhe, vcpu);
}
vcpu->mode = OUTSIDE_GUEST_MODE;
virt/kvm/arm/vgic/vgic-v3.c
+2 -2
View File
@@ -589,7 +589,7 @@ early_param("kvm-arm.vgic_v4_enable", early_gicv4_enable);
*/
int vgic_v3_probe(const struct gic_kvm_info *info)
{
u32 ich_vtr_el2 = kvm_call_hyp(__vgic_v3_get_ich_vtr_el2);
u32 ich_vtr_el2 = kvm_call_hyp_ret(__vgic_v3_get_ich_vtr_el2);
int ret;
/*
@@ -679,7 +679,7 @@ void vgic_v3_put(struct kvm_vcpu *vcpu)
struct vgic_v3_cpu_if *cpu_if = &vcpu->arch.vgic_cpu.vgic_v3;
if (likely(cpu_if->vgic_sre))
cpu_if->vgic_vmcr = kvm_call_hyp(__vgic_v3_read_vmcr);
cpu_if->vgic_vmcr = kvm_call_hyp_ret(__vgic_v3_read_vmcr);
kvm_call_hyp(__vgic_v3_save_aprs, vcpu);