From: Cun Li <cun.jia...@gmail.com>
The use of 'struct static_key' and 'static_key_false' is
deprecated. Use the new API.
Signed-off-by: Cun Li <cun.jia...@gmail.com>
Message-Id: <20210111152435.50275-1-cun.jia...@gmail.com>
[Make it compile. While at it, rename kvm_no_apic_vcpu to
kvm_has_noapic_vcpu; the former reads too much like "true if
no vCPU has an APIC". - Paolo]
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
arch/x86/kvm/lapic.c | 25 +++++++++----------------
arch/x86/kvm/lapic.h | 13 ++++++-------
arch/x86/kvm/mmu/mmu_audit.c | 8 ++++----
arch/x86/kvm/x86.c | 9 ++++-----
4 files changed, 23 insertions(+), 32 deletions(-)
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 43cceadd073e..87f6b5a5a272 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -91,8 +91,8 @@ static inline int __apic_test_and_clear_vector(int vec, void
*bitmap)
return __test_and_clear_bit(VEC_POS(vec), (bitmap) + REG_POS(vec));
}
-struct static_key_deferred apic_hw_disabled __read_mostly;
-struct static_key_deferred apic_sw_disabled __read_mostly;
+__read_mostly DEFINE_STATIC_KEY_DEFERRED_FALSE(apic_hw_disabled, HZ);
+__read_mostly DEFINE_STATIC_KEY_DEFERRED_FALSE(apic_sw_disabled, HZ);
static inline int apic_enabled(struct kvm_lapic *apic)
{
@@ -290,9 +290,9 @@ static inline void apic_set_spiv(struct kvm_lapic *apic,
u32 val)
if (enabled != apic->sw_enabled) {
apic->sw_enabled = enabled;
if (enabled)
- static_key_slow_dec_deferred(&apic_sw_disabled);
+ static_branch_slow_dec_deferred(&apic_sw_disabled);
else
- static_key_slow_inc(&apic_sw_disabled.key);
+ static_branch_inc(&apic_sw_disabled.key);
atomic_set_release(&apic->vcpu->kvm->arch.apic_map_dirty,
DIRTY);
}
@@ -2175,10 +2175,10 @@ void kvm_free_lapic(struct kvm_vcpu *vcpu)
hrtimer_cancel(&apic->lapic_timer.timer);
if (!(vcpu->arch.apic_base & MSR_IA32_APICBASE_ENABLE))
- static_key_slow_dec_deferred(&apic_hw_disabled);
+ static_branch_slow_dec_deferred(&apic_hw_disabled);
if (!apic->sw_enabled)
- static_key_slow_dec_deferred(&apic_sw_disabled);
+ static_branch_slow_dec_deferred(&apic_sw_disabled);
if (apic->regs)
free_page((unsigned long)apic->regs);
@@ -2250,9 +2250,9 @@ void kvm_lapic_set_base(struct kvm_vcpu *vcpu, u64 value)
if ((old_value ^ value) & MSR_IA32_APICBASE_ENABLE) {
if (value & MSR_IA32_APICBASE_ENABLE) {
kvm_apic_set_xapic_id(apic, vcpu->vcpu_id);
- static_key_slow_dec_deferred(&apic_hw_disabled);
+ static_branch_slow_dec_deferred(&apic_hw_disabled);
} else {
- static_key_slow_inc(&apic_hw_disabled.key);
+ static_branch_inc(&apic_hw_disabled.key);
atomic_set_release(&apic->vcpu->kvm->arch.apic_map_dirty, DIRTY);
}
}
@@ -2449,7 +2449,7 @@ int kvm_create_lapic(struct kvm_vcpu *vcpu, int
timer_advance_ns)
* thinking that APIC state has changed.
*/
vcpu->arch.apic_base = MSR_IA32_APICBASE_ENABLE;
- static_key_slow_inc(&apic_sw_disabled.key); /* sw disabled at reset */
+ static_branch_inc(&apic_sw_disabled.key); /* sw disabled at reset */
kvm_iodevice_init(&apic->dev, &apic_mmio_ops);
return 0;
@@ -2904,13 +2904,6 @@ void kvm_apic_accept_events(struct kvm_vcpu *vcpu)
}
}
-void kvm_lapic_init(void)
-{
- /* do not patch jump label more than once per second */
- jump_label_rate_limit(&apic_hw_disabled, HZ);
- jump_label_rate_limit(&apic_sw_disabled, HZ);
-}
-
void kvm_lapic_exit(void)
{
static_key_deferred_flush(&apic_hw_disabled);
diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h
index 4fb86e3a9dd3..ff4a7cc7d694 100644
--- a/arch/x86/kvm/lapic.h
+++ b/arch/x86/kvm/lapic.h
@@ -131,7 +131,6 @@ static inline bool kvm_hv_vapic_assist_page_enabled(struct
kvm_vcpu *vcpu)
}
int kvm_lapic_enable_pv_eoi(struct kvm_vcpu *vcpu, u64 data, unsigned long
len);
-void kvm_lapic_init(void);
void kvm_lapic_exit(void);
#define VEC_POS(v) ((v) & (32 - 1))
@@ -172,29 +171,29 @@ static inline void kvm_lapic_set_reg(struct kvm_lapic
*apic, int reg_off, u32 va
__kvm_lapic_set_reg(apic->regs, reg_off, val);
}
-extern struct static_key kvm_no_apic_vcpu;
+DECLARE_STATIC_KEY_FALSE(kvm_has_noapic_vcpu);
static inline bool lapic_in_kernel(struct kvm_vcpu *vcpu)
{
- if (static_key_false(&kvm_no_apic_vcpu))
+ if (static_branch_unlikely(&kvm_has_noapic_vcpu))
return vcpu->arch.apic;
return true;
}
-extern struct static_key_deferred apic_hw_disabled;
+extern struct static_key_false_deferred apic_hw_disabled;
static inline int kvm_apic_hw_enabled(struct kvm_lapic *apic)
{
- if (static_key_false(&apic_hw_disabled.key))
+ if (static_branch_unlikely(&apic_hw_disabled.key))
return apic->vcpu->arch.apic_base & MSR_IA32_APICBASE_ENABLE;
return MSR_IA32_APICBASE_ENABLE;
}
-extern struct static_key_deferred apic_sw_disabled;
+extern struct static_key_false_deferred apic_sw_disabled;
static inline bool kvm_apic_sw_enabled(struct kvm_lapic *apic)
{
- if (static_key_false(&apic_sw_disabled.key))
+ if (static_branch_unlikely(&apic_sw_disabled.key))
return apic->sw_enabled;
return true;
}
diff --git a/arch/x86/kvm/mmu/mmu_audit.c b/arch/x86/kvm/mmu/mmu_audit.c
index c8d51a37e2ce..ced15fd58fde 100644
--- a/arch/x86/kvm/mmu/mmu_audit.c
+++ b/arch/x86/kvm/mmu/mmu_audit.c
@@ -234,7 +234,7 @@ static void audit_vcpu_spte(struct kvm_vcpu *vcpu)
}
static bool mmu_audit;
-static struct static_key mmu_audit_key;
+static DEFINE_STATIC_KEY_FALSE(mmu_audit_key);
static void __kvm_mmu_audit(struct kvm_vcpu *vcpu, int point)
{
@@ -250,7 +250,7 @@ static void __kvm_mmu_audit(struct kvm_vcpu *vcpu, int
point)
static inline void kvm_mmu_audit(struct kvm_vcpu *vcpu, int point)
{
- if (static_key_false((&mmu_audit_key)))
+ if (static_branch_unlikely((&mmu_audit_key)))
__kvm_mmu_audit(vcpu, point);
}
@@ -259,7 +259,7 @@ static void mmu_audit_enable(void)
if (mmu_audit)
return;
- static_key_slow_inc(&mmu_audit_key);
+ static_branch_inc(&mmu_audit_key);
mmu_audit = true;
}
@@ -268,7 +268,7 @@ static void mmu_audit_disable(void)
if (!mmu_audit)
return;
- static_key_slow_dec(&mmu_audit_key);
+ static_branch_dec(&mmu_audit_key);
mmu_audit = false;
}
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index d8fa41a541a6..83b012bba4ef 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -7970,7 +7970,6 @@ int kvm_arch_init(void *opaque)
supported_xcr0 = host_xcr0 & KVM_SUPPORTED_XCR0;
}
- kvm_lapic_init();
if (pi_inject_timer == -1)
pi_inject_timer = housekeeping_enabled(HK_FLAG_TIMER);
#ifdef CONFIG_X86_64
@@ -9992,7 +9991,7 @@ int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu)
if (kvm_apicv_activated(vcpu->kvm))
vcpu->arch.apicv_active = true;
} else
- static_key_slow_inc(&kvm_no_apic_vcpu);
+ static_branch_inc(&kvm_has_noapic_vcpu);
r = -ENOMEM;
@@ -10121,7 +10120,7 @@ void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
free_page((unsigned long)vcpu->arch.pio_data);
kvfree(vcpu->arch.cpuid_entries);
if (!lapic_in_kernel(vcpu))
- static_key_slow_dec(&kvm_no_apic_vcpu);
+ static_branch_dec(&kvm_has_noapic_vcpu);
}
void kvm_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event)
@@ -10376,8 +10375,8 @@ bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu)
return (vcpu->arch.apic_base & MSR_IA32_APICBASE_BSP) != 0;
}
-struct static_key kvm_no_apic_vcpu __read_mostly;
-EXPORT_SYMBOL_GPL(kvm_no_apic_vcpu);
+__read_mostly DEFINE_STATIC_KEY_FALSE(kvm_has_noapic_vcpu);
+EXPORT_SYMBOL_GPL(kvm_has_noapic_vcpu);
void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu)
{
--
2.26.2
