[PATCH 41/43] KVM: VMX: Drop hv_timer_armed from 'struct loaded_vmcs'

From: Paolo Bonzini
Date: Thu Jun 13 2019 - 13:09:13 EST


From: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>

... now that it is fully redundant with the pin controls shadow.

Signed-off-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
---
arch/x86/kvm/vmx/nested.c | 1 -
arch/x86/kvm/vmx/vmcs.h | 1 -
arch/x86/kvm/vmx/vmx.c | 8 ++------
3 files changed, 2 insertions(+), 8 deletions(-)

diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c
index 598540ce0f52..33d6598709cb 100644
--- a/arch/x86/kvm/vmx/nested.c
+++ b/arch/x86/kvm/vmx/nested.c
@@ -2015,7 +2015,6 @@ static void prepare_vmcs02_early(struct vcpu_vmx *vmx, struct vmcs12 *vmcs12)
exec_control |= vmcs12->pin_based_vm_exec_control;
/* Preemption timer setting is computed directly in vmx_vcpu_run. */
exec_control &= ~PIN_BASED_VMX_PREEMPTION_TIMER;
- vmx->loaded_vmcs->hv_timer_armed = false;

/* Posted interrupts setting is only taken from vmcs12. */
if (nested_cpu_has_posted_intr(vmcs12)) {
diff --git a/arch/x86/kvm/vmx/vmcs.h b/arch/x86/kvm/vmx/vmcs.h
index 52f12d78e4fa..9a87a2482e3e 100644
--- a/arch/x86/kvm/vmx/vmcs.h
+++ b/arch/x86/kvm/vmx/vmcs.h
@@ -61,7 +61,6 @@ struct loaded_vmcs {
int cpu;
bool launched;
bool nmi_known_unmasked;
- bool hv_timer_armed;
/* Support for vnmi-less CPUs */
int soft_vnmi_blocked;
ktime_t entry_time;
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 6afb2bc3d0ab..86f29ab22dec 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -6359,9 +6359,7 @@ static void atomic_switch_perf_msrs(struct vcpu_vmx *vmx)
static void vmx_arm_hv_timer(struct vcpu_vmx *vmx, u32 val)
{
vmcs_write32(VMX_PREEMPTION_TIMER_VALUE, val);
- if (!vmx->loaded_vmcs->hv_timer_armed)
- pin_controls_setbit(vmx, PIN_BASED_VMX_PREEMPTION_TIMER);
- vmx->loaded_vmcs->hv_timer_armed = true;
+ pin_controls_setbit(vmx, PIN_BASED_VMX_PREEMPTION_TIMER);
}

static void vmx_update_hv_timer(struct kvm_vcpu *vcpu)
@@ -6388,9 +6386,7 @@ static void vmx_update_hv_timer(struct kvm_vcpu *vcpu)
return;
}

- if (vmx->loaded_vmcs->hv_timer_armed)
- pin_controls_clearbit(vmx, PIN_BASED_VMX_PREEMPTION_TIMER);
- vmx->loaded_vmcs->hv_timer_armed = false;
+ pin_controls_clearbit(vmx, PIN_BASED_VMX_PREEMPTION_TIMER);
}

void vmx_update_host_rsp(struct vcpu_vmx *vmx, unsigned long host_rsp)
--
1.8.3.1