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KVM: Drop kvm_arch_{init,exit}() hooks

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Drop kvm_arch_init() and kvm_arch_exit() 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
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Anup Patel <anup@brainfault.org>
Message-Id: <20221130230934.1014142-30-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson 2022-11-30 23:09:13 +00:00 committed by Paolo Bonzini
parent 6c30cd2ef4
commit a578a0a9e3
9 changed files with 2 additions and 76 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
arch/arm64/kvm/arm.c
View File

@ -2301,17 +2301,6 @@ out_err:
return err;
}
int kvm_arch_init(void *opaque)
{
return 0;
}
/* NOP: Compiling as a module not supported */
void kvm_arch_exit(void)
{
}
static int __init early_kvm_mode_cfg(char *arg)
{
if (!arg)

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

@ -1010,16 +1010,6 @@ long kvm_arch_vm_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg)
return r;
}
int kvm_arch_init(void *opaque)
{
return 0;
}
void kvm_arch_exit(void)
{
}
int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
struct kvm_sregs *sregs)
{

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

@ -881,7 +881,6 @@ 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) {}
static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
static inline void kvm_arch_exit(void) {}
static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}

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

@ -2539,11 +2539,6 @@ void kvmppc_init_lpid(unsigned long nr_lpids_param)
}
EXPORT_SYMBOL_GPL(kvmppc_init_lpid);
int kvm_arch_init(void *opaque)
{
return 0;
}
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_ppc_instr);
void kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu, struct dentry *debugfs_dentry)

9
arch/riscv/kvm/main.c
View File

@ -65,15 +65,6 @@ void kvm_arch_hardware_disable(void)
csr_write(CSR_HIDELEG, 0);
}
int kvm_arch_init(void *opaque)
{
return 0;
}
void kvm_arch_exit(void)
{
}
static int __init riscv_kvm_init(void)
{
const char *str;

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

@ -541,16 +541,6 @@ static void __kvm_s390_exit(void)
debug_unregister(kvm_s390_dbf_uv);
}
int kvm_arch_init(void *opaque)
{
return 0;
}
void kvm_arch_exit(void)
{
}
/* Section: device related */
long kvm_arch_dev_ioctl(struct file *filp,
unsigned int ioctl, unsigned long arg)

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

@ -9292,16 +9292,6 @@ static inline void kvm_ops_update(struct kvm_x86_init_ops *ops)
kvm_pmu_ops_update(ops->pmu_ops);
}
int kvm_arch_init(void *opaque)
{
return 0;
}
void kvm_arch_exit(void)
{
}
static int __kvm_x86_vendor_init(struct kvm_x86_init_ops *ops)
{
u64 host_pat;

3
include/linux/kvm_host.h
View File

@ -1423,9 +1423,6 @@ int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
struct kvm_guest_debug *dbg);
int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu);
int kvm_arch_init(void *opaque);
void kvm_arch_exit(void);
void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu);
void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);

19
virt/kvm/kvm_main.c
View File

@ -5921,20 +5921,8 @@ int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align,
int r;
int cpu;
/*
* FIXME: Get rid of kvm_arch_init(), vendor code should call arch code
* directly. Note, kvm_arch_init() _must_ be called before anything
* else as x86 relies on checks buried in kvm_arch_init() to guard
* against multiple calls to kvm_init().
*/
r = kvm_arch_init(opaque);
if (r)
return r;
if (!zalloc_cpumask_var(&cpus_hardware_enabled, GFP_KERNEL)) {
r = -ENOMEM;
goto err_hw_enabled;
}
if (!zalloc_cpumask_var(&cpus_hardware_enabled, GFP_KERNEL))
return -ENOMEM;
c.ret = &r;
c.opaque = opaque;
@ -6022,8 +6010,6 @@ out_free_3:
cpuhp_remove_state_nocalls(CPUHP_AP_KVM_STARTING);
out_free_2:
free_cpumask_var(cpus_hardware_enabled);
err_hw_enabled:
kvm_arch_exit();
return r;
}
EXPORT_SYMBOL_GPL(kvm_init);
@ -6051,7 +6037,6 @@ void kvm_exit(void)
on_each_cpu(hardware_disable_nolock, NULL, 1);
kvm_irqfd_exit();
free_cpumask_var(cpus_hardware_enabled);
kvm_arch_exit();
}
EXPORT_SYMBOL_GPL(kvm_exit);