[PATCH 7/8] KVM: arm64: Remove unused return value from kvm_reset_vcpu()

Oliver Upton
2023-09-20T19:51:02Z

Get rid of the return value for kvm_reset_vcpu() as there are no longer
any cases where it returns a nonzero value.

Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
---
arch/arm64/include/asm/kvm_host.h | 2 +-
arch/arm64/kvm/arch_timer.c | 4 +---
arch/arm64/kvm/arm.c | 10 ++++------
arch/arm64/kvm/reset.c | 6 ++----
include/kvm/arm_arch_timer.h | 2 +-
5 files changed, 9 insertions(+), 15 deletions(-)

diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index af06ccb7ee34..cb2cde7b2682 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -78,7 +78,7 @@ extern unsigned int __ro_after_init kvm_sve_max_vl;
int __init kvm_arm_init_sve(void);

u32 __attribute_const__ kvm_target_cpu(void);
-int kvm_reset_vcpu(struct kvm_vcpu *vcpu);
+void kvm_reset_vcpu(struct kvm_vcpu *vcpu);
void kvm_arm_vcpu_destroy(struct kvm_vcpu *vcpu);

struct kvm_hyp_memcache {
diff --git a/arch/arm64/kvm/arch_timer.c b/arch/arm64/kvm/arch_timer.c
index 6dcdae4d38cb..74d7d57ba6fc 100644
--- a/arch/arm64/kvm/arch_timer.c
+++ b/arch/arm64/kvm/arch_timer.c
@@ -943,7 +943,7 @@ void kvm_timer_sync_user(struct kvm_vcpu *vcpu)
unmask_vtimer_irq_user(vcpu);
}

-int kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu)
+void kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu)
{
struct arch_timer_cpu *timer = vcpu_timer(vcpu);
struct timer_map map;
@@ -987,8 +987,6 @@ int kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu)
soft_timer_cancel(&map.emul_vtimer->hrtimer);
if (map.emul_ptimer)
soft_timer_cancel(&map.emul_ptimer->hrtimer);
-
- return 0;
}

static void timer_context_init(struct kvm_vcpu *vcpu, int timerid)
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index cae7a2df52ab..32360a5f3779 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -1282,15 +1282,12 @@ static int __kvm_vcpu_set_target(struct kvm_vcpu *vcpu,
bitmap_copy(vcpu->arch.features, &features, KVM_VCPU_MAX_FEATURES);

/* Now we know what it is, we can reset it. */
- ret = kvm_reset_vcpu(vcpu);
- if (ret) {
- bitmap_zero(vcpu->arch.features, KVM_VCPU_MAX_FEATURES);
- goto out_unlock;
- }
+ kvm_reset_vcpu(vcpu);

bitmap_copy(kvm->arch.vcpu_features, &features, KVM_VCPU_MAX_FEATURES);
set_bit(KVM_ARCH_FLAG_VCPU_FEATURES_CONFIGURED, &kvm->arch.flags);
vcpu_set_flag(vcpu, VCPU_INITIALIZED);
+ ret = 0;
out_unlock:
mutex_unlock(&kvm->arch.config_lock);
return ret;
@@ -1315,7 +1312,8 @@ static int kvm_vcpu_set_target(struct kvm_vcpu *vcpu,
if (kvm_vcpu_init_changed(vcpu, init))
return -EINVAL;

- return kvm_reset_vcpu(vcpu);
+ kvm_reset_vcpu(vcpu);
+ return 0;
}

static int kvm_arch_vcpu_ioctl_vcpu_init(struct kvm_vcpu *vcpu,
diff --git a/arch/arm64/kvm/reset.c b/arch/arm64/kvm/reset.c
index edffbfab5e7b..96ef9b7e74d4 100644
--- a/arch/arm64/kvm/reset.c
+++ b/arch/arm64/kvm/reset.c
@@ -188,10 +188,9 @@ static void kvm_vcpu_enable_ptrauth(struct kvm_vcpu *vcpu)
* disable preemption around the vcpu reset as we would otherwise race with
* preempt notifiers which also call put/load.
*/
-int kvm_reset_vcpu(struct kvm_vcpu *vcpu)
+void kvm_reset_vcpu(struct kvm_vcpu *vcpu)
{
struct vcpu_reset_state reset_state;
- int ret;
bool loaded;
u32 pstate;

@@ -260,12 +259,11 @@ int kvm_reset_vcpu(struct kvm_vcpu *vcpu)
}

/* Reset timer */
- ret = kvm_timer_vcpu_reset(vcpu);
+ kvm_timer_vcpu_reset(vcpu);

if (loaded)
kvm_arch_vcpu_load(vcpu, smp_processor_id());
preempt_enable();
- return ret;
}

u32 get_kvm_ipa_limit(void)
diff --git a/include/kvm/arm_arch_timer.h b/include/kvm/arm_arch_timer.h
index bb3cb005873e..8adf09dbc473 100644
--- a/include/kvm/arm_arch_timer.h
+++ b/include/kvm/arm_arch_timer.h
@@ -94,7 +94,7 @@ struct arch_timer_cpu {

int __init kvm_timer_hyp_init(bool has_gic);
int kvm_timer_enable(struct kvm_vcpu *vcpu);
-int kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu);
+void kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu);
void kvm_timer_vcpu_init(struct kvm_vcpu *vcpu);
void kvm_timer_sync_user(struct kvm_vcpu *vcpu);
bool kvm_timer_should_notify_user(struct kvm_vcpu *vcpu);
--
2.42.0.515.g380fc7ccd1-goog