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KVM: Drop arch hardware (un)setup hooks

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Drop kvm_arch_hardware_setup() and kvm_arch_hardware_unsetup() now that
all implementations are nops.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Eric Farman <farman@linux.ibm.com>	# s390
Acked-by: Anup Patel <anup@brainfault.org>
Message-Id: <20221130230934.1014142-10-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson 2022-11-30 23:08:53 +00:00 committed by Paolo Bonzini
parent b7483387e3
commit 63a1bd8ad1
12 changed files with 0 additions and 53 deletions
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1
arch/arm64/include/asm/kvm_host.h
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@ -943,7 +943,6 @@ static inline bool kvm_system_needs_idmapped_vectors(void)
void kvm_arm_vcpu_ptrauth_trap(struct kvm_vcpu *vcpu);
static inline void kvm_arch_hardware_unsetup(void) {}
static inline void kvm_arch_sync_events(struct kvm *kvm) {}
static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}

5
arch/arm64/kvm/arm.c
View File

@ -63,11 +63,6 @@ int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu)
return kvm_vcpu_exiting_guest_mode(vcpu) == IN_GUEST_MODE;
}
int kvm_arch_hardware_setup(void *opaque)
{
return 0;
}
int kvm_arch_check_processor_compat(void *opaque)
{
return 0;

1
arch/mips/include/asm/kvm_host.h
View File

@ -888,7 +888,6 @@ extern unsigned long kvm_mips_get_ramsize(struct kvm *kvm);
extern int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu,
struct kvm_mips_interrupt *irq);
static inline void kvm_arch_hardware_unsetup(void) {}
static inline void kvm_arch_sync_events(struct kvm *kvm) {}
static inline void kvm_arch_free_memslot(struct kvm *kvm,
struct kvm_memory_slot *slot) {}

5
arch/mips/kvm/mips.c
View File

@ -135,11 +135,6 @@ void kvm_arch_hardware_disable(void)
kvm_mips_callbacks->hardware_disable();
}
int kvm_arch_hardware_setup(void *opaque)
{
return 0;
}
int kvm_arch_check_processor_compat(void *opaque)
{
return 0;

1
arch/powerpc/include/asm/kvm_host.h
View File

@ -877,7 +877,6 @@ struct kvm_vcpu_arch {
#define __KVM_HAVE_CREATE_DEVICE
static inline void kvm_arch_hardware_disable(void) {}
static inline void kvm_arch_hardware_unsetup(void) {}
static inline void kvm_arch_sync_events(struct kvm *kvm) {}
static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}

5
arch/powerpc/kvm/powerpc.c
View File

@ -440,11 +440,6 @@ int kvm_arch_hardware_enable(void)
return 0;
}
int kvm_arch_hardware_setup(void *opaque)
{
return 0;
}
int kvm_arch_check_processor_compat(void *opaque)
{
return kvmppc_core_check_processor_compat();

1
arch/riscv/include/asm/kvm_host.h
View File

@ -230,7 +230,6 @@ struct kvm_vcpu_arch {
bool pause;
};
static inline void kvm_arch_hardware_unsetup(void) {}
static inline void kvm_arch_sync_events(struct kvm *kvm) {}
static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}

5
arch/riscv/kvm/main.c
View File

@ -25,11 +25,6 @@ int kvm_arch_check_processor_compat(void *opaque)
return 0;
}
int kvm_arch_hardware_setup(void *opaque)
{
return 0;
}
int kvm_arch_hardware_enable(void)
{
unsigned long hideleg, hedeleg;

10
arch/s390/kvm/kvm-s390.c
View File

@ -329,16 +329,6 @@ static struct notifier_block kvm_clock_notifier = {
.notifier_call = kvm_clock_sync,
};
int kvm_arch_hardware_setup(void *opaque)
{
return 0;
}
void kvm_arch_hardware_unsetup(void)
{
}
static void allow_cpu_feat(unsigned long nr)
{
set_bit_inv(nr, kvm_s390_available_cpu_feat);

10
arch/x86/kvm/x86.c
View File

@ -12033,16 +12033,6 @@ void kvm_arch_hardware_disable(void)
drop_user_return_notifiers();
}
int kvm_arch_hardware_setup(void *opaque)
{
return 0;
}
void kvm_arch_hardware_unsetup(void)
{
}
int kvm_arch_check_processor_compat(void *opaque)
{
struct cpuinfo_x86 *c = &cpu_data(smp_processor_id());

2
include/linux/kvm_host.h
View File

@ -1447,8 +1447,6 @@ static inline void kvm_create_vcpu_debugfs(struct kvm_vcpu *vcpu) {}
int kvm_arch_hardware_enable(void);
void kvm_arch_hardware_disable(void);
int kvm_arch_hardware_setup(void *opaque);
void kvm_arch_hardware_unsetup(void);
int kvm_arch_check_processor_compat(void *opaque);
int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu *vcpu);

7
virt/kvm/kvm_main.c
View File

@ -5931,10 +5931,6 @@ int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align,
if (r)
return r;
r = kvm_arch_hardware_setup(opaque);
if (r < 0)
goto err_hw_setup;
if (!zalloc_cpumask_var(&cpus_hardware_enabled, GFP_KERNEL)) {
r = -ENOMEM;
goto err_hw_enabled;
@ -6027,8 +6023,6 @@ out_free_3:
out_free_2:
free_cpumask_var(cpus_hardware_enabled);
err_hw_enabled:
kvm_arch_hardware_unsetup();
err_hw_setup:
kvm_arch_exit();
return r;
}
@ -6057,7 +6051,6 @@ void kvm_exit(void)
on_each_cpu(hardware_disable_nolock, NULL, 1);
kvm_irqfd_exit();
free_cpumask_var(cpus_hardware_enabled);
kvm_arch_hardware_unsetup();
kvm_arch_exit();
}
EXPORT_SYMBOL_GPL(kvm_exit);