KVM: Drop arch hardware (un)setup hooks

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>

diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 35a159d..f50951c 100644 (file)
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -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) {}
 

diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 9c5573b..e6c21b8 100644 (file)
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -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;

diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h
index 5cedb28..28f0ba9 100644 (file)
--- a/arch/mips/include/asm/kvm_host.h
+++ b/arch/mips/include/asm/kvm_host.h
@@ -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) {}

diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c
index a25e0b7..af29490 100644 (file)
--- a/arch/mips/kvm/mips.c
+++ b/arch/mips/kvm/mips.c
@@ -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;

diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
index caea15d..5d2c3a4 100644 (file)
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -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) {}

diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 04494a4..5faf694 100644 (file)
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -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();

diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm_host.h
index 93f43a3..a79b7d1 100644 (file)
--- a/arch/riscv/include/asm/kvm_host.h
+++ b/arch/riscv/include/asm/kvm_host.h
@@ -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) {}
 

diff --git a/arch/riscv/kvm/main.c b/arch/riscv/kvm/main.c
index 58c5489..afd6400 100644 (file)
--- a/arch/riscv/kvm/main.c
+++ b/arch/riscv/kvm/main.c
@@ -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;

diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 97c7ccd..829e6e0 100644 (file)
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -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);

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 4e7a71c..089f0ee 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -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());

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 4f26b24..7c1009c 100644 (file)
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -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);

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 7026437..8393347 100644 (file)
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -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);