Drop kvm_arch_check_processor_compat() and its support code now that all architecture implementations are nops.
Signed-off-by: Sean Christopherson <sea...@google.com> Reviewed-by: Philippe Mathieu-Daudé <phi...@linaro.org> Reviewed-by: Eric Farman <far...@linux.ibm.com> # s390 Acked-by: Anup Patel <a...@brainfault.org> --- arch/arm64/kvm/arm.c | 7 +------ arch/mips/kvm/mips.c | 7 +------ arch/powerpc/kvm/book3s.c | 2 +- arch/powerpc/kvm/e500.c | 2 +- arch/powerpc/kvm/e500mc.c | 2 +- arch/powerpc/kvm/powerpc.c | 5 ----- arch/riscv/kvm/main.c | 7 +------ arch/s390/kvm/kvm-s390.c | 7 +------ arch/x86/kvm/svm/svm.c | 4 ++-- arch/x86/kvm/vmx/vmx.c | 4 ++-- arch/x86/kvm/x86.c | 5 ----- include/linux/kvm_host.h | 4 +--- virt/kvm/kvm_main.c | 24 +----------------------- 13 files changed, 13 insertions(+), 67 deletions(-) diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 936ef7d1ea94..e915b1d9f2cd 100644 --- 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_check_processor_compat(void *opaque) -{ - return 0; -} - int kvm_vm_ioctl_enable_cap(struct kvm *kvm, struct kvm_enable_cap *cap) { @@ -2273,7 +2268,7 @@ static __init int kvm_arm_init(void) * FIXME: Do something reasonable if kvm_init() fails after pKVM * hypervisor protection is finalized. */ - err = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE); + err = kvm_init(sizeof(struct kvm_vcpu), 0, THIS_MODULE); if (err) goto out_subs; diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c index 3cade648827a..36c8991b5d39 100644 --- 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_check_processor_compat(void *opaque) -{ - return 0; -} - extern void kvm_init_loongson_ipi(struct kvm *kvm); int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) @@ -1636,7 +1631,7 @@ static int __init kvm_mips_init(void) register_die_notifier(&kvm_mips_csr_die_notifier); - ret = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE); + ret = kvm_init(sizeof(struct kvm_vcpu), 0, THIS_MODULE); if (ret) { unregister_die_notifier(&kvm_mips_csr_die_notifier); return ret; diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c index 87283a0e33d8..57f4e7896d67 100644 --- a/arch/powerpc/kvm/book3s.c +++ b/arch/powerpc/kvm/book3s.c @@ -1052,7 +1052,7 @@ static int kvmppc_book3s_init(void) { int r; - r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE); + r = kvm_init(sizeof(struct kvm_vcpu), 0, THIS_MODULE); if (r) return r; #ifdef CONFIG_KVM_BOOK3S_32_HANDLER diff --git a/arch/powerpc/kvm/e500.c b/arch/powerpc/kvm/e500.c index 0ea61190ec04..b0f695428733 100644 --- a/arch/powerpc/kvm/e500.c +++ b/arch/powerpc/kvm/e500.c @@ -531,7 +531,7 @@ static int __init kvmppc_e500_init(void) flush_icache_range(kvmppc_booke_handlers, kvmppc_booke_handlers + ivor[max_ivor] + handler_len); - r = kvm_init(NULL, sizeof(struct kvmppc_vcpu_e500), 0, THIS_MODULE); + r = kvm_init(sizeof(struct kvmppc_vcpu_e500), 0, THIS_MODULE); if (r) goto err_out; kvm_ops_e500.owner = THIS_MODULE; diff --git a/arch/powerpc/kvm/e500mc.c b/arch/powerpc/kvm/e500mc.c index 795667f7ebf0..611532a0dedc 100644 --- a/arch/powerpc/kvm/e500mc.c +++ b/arch/powerpc/kvm/e500mc.c @@ -404,7 +404,7 @@ static int __init kvmppc_e500mc_init(void) */ kvmppc_init_lpid(KVMPPC_NR_LPIDS/threads_per_core); - r = kvm_init(NULL, sizeof(struct kvmppc_vcpu_e500), 0, THIS_MODULE); + r = kvm_init(sizeof(struct kvmppc_vcpu_e500), 0, THIS_MODULE); if (r) goto err_out; kvm_ops_e500mc.owner = THIS_MODULE; diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 01d0f9935e6c..f5b4ff6bfc89 100644 --- 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_check_processor_compat(void *opaque) -{ - return 0; -} - int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) { struct kvmppc_ops *kvm_ops = NULL; diff --git a/arch/riscv/kvm/main.c b/arch/riscv/kvm/main.c index 4710a6751687..34c3dece6990 100644 --- a/arch/riscv/kvm/main.c +++ b/arch/riscv/kvm/main.c @@ -20,11 +20,6 @@ long kvm_arch_dev_ioctl(struct file *filp, return -EINVAL; } -int kvm_arch_check_processor_compat(void *opaque) -{ - return 0; -} - int kvm_arch_hardware_enable(void) { unsigned long hideleg, hedeleg; @@ -110,6 +105,6 @@ static int __init riscv_kvm_init(void) kvm_info("VMID %ld bits available\n", kvm_riscv_gstage_vmid_bits()); - return kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE); + return kvm_init(sizeof(struct kvm_vcpu), 0, THIS_MODULE); } module_init(riscv_kvm_init); diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 25b08b956888..7ad8252e92c2 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -262,11 +262,6 @@ int kvm_arch_hardware_enable(void) return 0; } -int kvm_arch_check_processor_compat(void *opaque) -{ - return 0; -} - /* forward declarations */ static void kvm_gmap_notifier(struct gmap *gmap, unsigned long start, unsigned long end); @@ -5716,7 +5711,7 @@ static int __init kvm_s390_init(void) if (r) return r; - r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE); + r = kvm_init(sizeof(struct kvm_vcpu), 0, THIS_MODULE); if (r) { __kvm_s390_exit(); return r; diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index d7ea1c1175c2..d9a54590591d 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -5103,8 +5103,8 @@ static int __init svm_init(void) * Common KVM initialization _must_ come last, after this, /dev/kvm is * exposed to userspace! */ - r = kvm_init(NULL, sizeof(struct vcpu_svm), - __alignof__(struct vcpu_svm), THIS_MODULE); + r = kvm_init(sizeof(struct vcpu_svm), __alignof__(struct vcpu_svm), + THIS_MODULE); if (r) goto err_kvm_init; diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 8deb1bd60c10..b6f08a0a1435 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -8592,8 +8592,8 @@ static int __init vmx_init(void) * Common KVM initialization _must_ come last, after this, /dev/kvm is * exposed to userspace! */ - r = kvm_init(NULL, sizeof(struct vcpu_vmx), - __alignof__(struct vcpu_vmx), THIS_MODULE); + r = kvm_init(sizeof(struct vcpu_vmx), __alignof__(struct vcpu_vmx), + THIS_MODULE); if (r) goto err_kvm_init; diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 3571bc968cf8..566156b34314 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -12071,11 +12071,6 @@ void kvm_arch_hardware_disable(void) drop_user_return_notifiers(); } -int kvm_arch_check_processor_compat(void *opaque) -{ - return 0; -} - bool kvm_vcpu_is_reset_bsp(struct kvm_vcpu *vcpu) { return vcpu->kvm->arch.bsp_vcpu_id == vcpu->vcpu_id; diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 7dde28333e7c..616e8e90558b 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -953,8 +953,7 @@ static inline void kvm_irqfd_exit(void) { } #endif -int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, - struct module *module); +int kvm_init(unsigned vcpu_size, unsigned vcpu_align, struct module *module); void kvm_exit(void); void kvm_get_kvm(struct kvm *kvm); @@ -1460,7 +1459,6 @@ 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_check_processor_compat(void *opaque); int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu *vcpu); int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu); diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index a4a10a0b322f..3900bd3d75cb 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -5833,36 +5833,14 @@ void kvm_unregister_perf_callbacks(void) } #endif -struct kvm_cpu_compat_check { - void *opaque; - int *ret; -}; - -static void check_processor_compat(void *data) +int kvm_init(unsigned vcpu_size, unsigned vcpu_align, struct module *module) { - struct kvm_cpu_compat_check *c = data; - - *c->ret = kvm_arch_check_processor_compat(c->opaque); -} - -int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, - struct module *module) -{ - struct kvm_cpu_compat_check c; int r; int cpu; if (!zalloc_cpumask_var(&cpus_hardware_enabled, GFP_KERNEL)) return -ENOMEM; - c.ret = &r; - c.opaque = opaque; - for_each_online_cpu(cpu) { - smp_call_function_single(cpu, check_processor_compat, &c, 1); - if (r < 0) - goto out_free_2; - } - r = cpuhp_setup_state_nocalls(CPUHP_AP_KVM_STARTING, "kvm/cpu:starting", kvm_starting_cpu, kvm_dying_cpu); if (r) -- 2.38.1.584.g0f3c55d4c2-goog _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm