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-rw-r--r--arch/arm64/kvm/hyp/switch.c2
-rw-r--r--virt/kvm/arm/hyp/timer-sr.c44
2 files changed, 22 insertions, 24 deletions
diff --git a/arch/arm64/kvm/hyp/switch.c b/arch/arm64/kvm/hyp/switch.c
index 9ffd802e775d..307f8c1fcc2f 100644
--- a/arch/arm64/kvm/hyp/switch.c
+++ b/arch/arm64/kvm/hyp/switch.c
@@ -379,7 +379,6 @@ int kvm_vcpu_run_vhe(struct kvm_vcpu *vcpu)
__activate_vm(vcpu->kvm);
__vgic_restore_state(vcpu);
- __timer_enable_traps(vcpu);
/*
* We must restore the 32-bit state before the sysregs, thanks
@@ -400,7 +399,6 @@ int kvm_vcpu_run_vhe(struct kvm_vcpu *vcpu)
__sysreg_save_guest_state(guest_ctxt);
__sysreg32_save_state(vcpu);
- __timer_disable_traps(vcpu);
__vgic_save_state(vcpu);
__deactivate_traps(vcpu);
diff --git a/virt/kvm/arm/hyp/timer-sr.c b/virt/kvm/arm/hyp/timer-sr.c
index f24404b3c8df..77754a62eb0c 100644
--- a/virt/kvm/arm/hyp/timer-sr.c
+++ b/virt/kvm/arm/hyp/timer-sr.c
@@ -27,34 +27,34 @@ void __hyp_text __kvm_timer_set_cntvoff(u32 cntvoff_low, u32 cntvoff_high)
write_sysreg(cntvoff, cntvoff_el2);
}
+/*
+ * Should only be called on non-VHE systems.
+ * VHE systems use EL2 timers and configure EL1 timers in kvm_timer_init_vhe().
+ */
void __hyp_text __timer_disable_traps(struct kvm_vcpu *vcpu)
{
- /*
- * We don't need to do this for VHE since the host kernel runs in EL2
- * with HCR_EL2.TGE ==1, which makes those bits have no impact.
- */
- if (!has_vhe()) {
- u64 val;
+ u64 val;
- /* Allow physical timer/counter access for the host */
- val = read_sysreg(cnthctl_el2);
- val |= CNTHCTL_EL1PCTEN | CNTHCTL_EL1PCEN;
- write_sysreg(val, cnthctl_el2);
- }
+ /* Allow physical timer/counter access for the host */
+ val = read_sysreg(cnthctl_el2);
+ val |= CNTHCTL_EL1PCTEN | CNTHCTL_EL1PCEN;
+ write_sysreg(val, cnthctl_el2);
}
+/*
+ * Should only be called on non-VHE systems.
+ * VHE systems use EL2 timers and configure EL1 timers in kvm_timer_init_vhe().
+ */
void __hyp_text __timer_enable_traps(struct kvm_vcpu *vcpu)
{
- if (!has_vhe()) {
- u64 val;
+ u64 val;
- /*
- * Disallow physical timer access for the guest
- * Physical counter access is allowed
- */
- val = read_sysreg(cnthctl_el2);
- val &= ~CNTHCTL_EL1PCEN;
- val |= CNTHCTL_EL1PCTEN;
- write_sysreg(val, cnthctl_el2);
- }
+ /*
+ * Disallow physical timer access for the guest
+ * Physical counter access is allowed
+ */
+ val = read_sysreg(cnthctl_el2);
+ val &= ~CNTHCTL_EL1PCEN;
+ val |= CNTHCTL_EL1PCTEN;
+ write_sysreg(val, cnthctl_el2);
}