Now that the commpage doesn't use wired TLB entries, the per-CPU
vm_init() callback is the only work done by kvm_mips_init_vm_percpu().
The trap & emulate implementation doesn't actually need to do anything
from vm_init(), and the future VZ implementation would be better served
by a kvm_arch_hardware_enable callback anyway.
Therefore drop the vm_init() callback entirely, allowing the
kvm_mips_init_vm_percpu() function to also be dropped, along with the
kvm_mips_instance atomic counter.
Signed-off-by: James Hogan <james.hogan@xxxxxxxxxx>
Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Cc: "Radim Krčmář" <rkrcmar@xxxxxxxxxx>
Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Cc: linux-mips@xxxxxxxxxxxxxx
Cc: kvm@xxxxxxxxxxxxxxx
---
arch/mips/include/asm/kvm_host.h | 3 ---
arch/mips/kvm/mips.c | 16 ----------------
arch/mips/kvm/tlb.c | 3 ---
arch/mips/kvm/trap_emul.c | 6 ------
4 files changed, 0 insertions(+), 28 deletions(-)
diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h
index 667bf34b91f7..f4e9bb04350e 100644
--- a/arch/mips/include/asm/kvm_host.h
+++ b/arch/mips/include/asm/kvm_host.h
@@ -121,8 +121,6 @@ static inline bool kvm_is_error_hva(unsigned long addr)
return IS_ERR_VALUE(addr);
}
-extern atomic_t kvm_mips_instance;
-
struct kvm_vm_stat {
ulong remote_tlb_flush;
};
@@ -528,7 +526,6 @@ struct kvm_mips_callbacks {
int (*handle_msa_fpe)(struct kvm_vcpu *vcpu);
int (*handle_fpe)(struct kvm_vcpu *vcpu);
int (*handle_msa_disabled)(struct kvm_vcpu *vcpu);
- int (*vm_init)(struct kvm *kvm);
int (*vcpu_init)(struct kvm_vcpu *vcpu);
void (*vcpu_uninit)(struct kvm_vcpu *vcpu);
int (*vcpu_setup)(struct kvm_vcpu *vcpu);
diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c
index 09fcfde0a9db..001349124bad 100644
--- a/arch/mips/kvm/mips.c
+++ b/arch/mips/kvm/mips.c
@@ -92,22 +92,8 @@ void kvm_arch_check_processor_compat(void *rtn)
*(int *)rtn = 0;
}
-static void kvm_mips_init_vm_percpu(void *arg)
-{
- struct kvm *kvm = (struct kvm *)arg;
-
- kvm_mips_callbacks->vm_init(kvm);
-
-}
-
int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
{
- if (atomic_inc_return(&kvm_mips_instance) == 1) {
- kvm_debug("%s: 1st KVM instance, setup host TLB parameters\n",
- __func__);
- on_each_cpu(kvm_mips_init_vm_percpu, kvm, 1);
- }
-
return 0;
}
@@ -150,8 +136,6 @@ void kvm_mips_free_vcpus(struct kvm *kvm)
void kvm_arch_destroy_vm(struct kvm *kvm)
{
kvm_mips_free_vcpus(kvm);
-
- atomic_dec(&kvm_mips_instance);
}
long kvm_arch_dev_ioctl(struct file *filp, unsigned int ioctl,
diff --git a/arch/mips/kvm/tlb.c b/arch/mips/kvm/tlb.c
index 9bcab0dc827b..22b17207b3b7 100644
--- a/arch/mips/kvm/tlb.c
+++ b/arch/mips/kvm/tlb.c
@@ -33,9 +33,6 @@
#define KVM_GUEST_PC_TLB 0
#define KVM_GUEST_SP_TLB 1
-atomic_t kvm_mips_instance;
-EXPORT_SYMBOL_GPL(kvm_mips_instance);
-
static u32 kvm_mips_get_kernel_asid(struct kvm_vcpu *vcpu)
{
struct mm_struct *kern_mm = &vcpu->arch.guest_kernel_mm;
diff --git a/arch/mips/kvm/trap_emul.c b/arch/mips/kvm/trap_emul.c
index 7ef7b77834ed..087f73dfec9f 100644
--- a/arch/mips/kvm/trap_emul.c
+++ b/arch/mips/kvm/trap_emul.c
@@ -429,11 +429,6 @@ static int kvm_trap_emul_handle_msa_disabled(struct kvm_vcpu *vcpu)
return ret;
}
-static int kvm_trap_emul_vm_init(struct kvm *kvm)
-{
- return 0;
-}
-
static int kvm_trap_emul_vcpu_init(struct kvm_vcpu *vcpu)
{
struct mm_struct *kern_mm = &vcpu->arch.guest_kernel_mm;
@@ -851,7 +846,6 @@ static struct kvm_mips_callbacks kvm_trap_emul_callbacks = {
.handle_fpe = kvm_trap_emul_handle_fpe,
.handle_msa_disabled = kvm_trap_emul_handle_msa_disabled,
- .vm_init = kvm_trap_emul_vm_init,
.vcpu_init = kvm_trap_emul_vcpu_init,
.vcpu_uninit = kvm_trap_emul_vcpu_uninit,
.vcpu_setup = kvm_trap_emul_vcpu_setup,
--
git-series 0.8.10
