diff options
| -rw-r--r-- | arch/mips/include/asm/kvm_host.h | 11 | ||||
| -rw-r--r-- | arch/mips/kvm/mips.c | 26 | ||||
| -rw-r--r-- | arch/mips/kvm/trap_emul.c | 14 |
3 files changed, 48 insertions, 3 deletions
diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h index 33d3d8ac742e..ea1b495c042c 100644 --- a/arch/mips/include/asm/kvm_host.h +++ b/arch/mips/include/asm/kvm_host.h @@ -531,6 +531,14 @@ struct kvm_mips_callbacks { int (*vcpu_init)(struct kvm_vcpu *vcpu); void (*vcpu_uninit)(struct kvm_vcpu *vcpu); int (*vcpu_setup)(struct kvm_vcpu *vcpu); + void (*flush_shadow_all)(struct kvm *kvm); + /* + * Must take care of flushing any cached GPA PTEs (e.g. guest entries in + * VZ root TLB, or T&E GVA page tables and corresponding root TLB + * mappings). + */ + void (*flush_shadow_memslot)(struct kvm *kvm, + const struct kvm_memory_slot *slot); gpa_t (*gva_to_gpa)(gva_t gva); void (*queue_timer_int)(struct kvm_vcpu *vcpu); void (*dequeue_timer_int)(struct kvm_vcpu *vcpu); @@ -827,9 +835,6 @@ static inline void kvm_arch_sync_events(struct kvm *kvm) {} static inline void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {} static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) {} -static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {} -static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm, - struct kvm_memory_slot *slot) {} static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {} static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c index ff5e34293227..01f3fa1b9f0e 100644 --- a/arch/mips/kvm/mips.c +++ b/arch/mips/kvm/mips.c @@ -157,6 +157,32 @@ int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, return 0; } +void kvm_arch_flush_shadow_all(struct kvm *kvm) +{ + /* Flush whole GPA */ + kvm_mips_flush_gpa_pt(kvm, 0, ~0); + + /* Let implementation do the rest */ + kvm_mips_callbacks->flush_shadow_all(kvm); +} + +void kvm_arch_flush_shadow_memslot(struct kvm *kvm, + struct kvm_memory_slot *slot) +{ + /* + * The slot has been made invalid (ready for moving or deletion), so we + * need to ensure that it can no longer be accessed by any guest VCPUs. + */ + + spin_lock(&kvm->mmu_lock); + /* Flush slot from GPA */ + kvm_mips_flush_gpa_pt(kvm, slot->base_gfn, + slot->base_gfn + slot->npages - 1); + /* Let implementation do the rest */ + kvm_mips_callbacks->flush_shadow_memslot(kvm, slot); + spin_unlock(&kvm->mmu_lock); +} + int kvm_arch_prepare_memory_region(struct kvm *kvm, struct kvm_memory_slot *memslot, const struct kvm_userspace_memory_region *mem, diff --git a/arch/mips/kvm/trap_emul.c b/arch/mips/kvm/trap_emul.c index e20369d45f24..1efe78d4bda8 100644 --- a/arch/mips/kvm/trap_emul.c +++ b/arch/mips/kvm/trap_emul.c @@ -586,6 +586,18 @@ static int kvm_trap_emul_vcpu_setup(struct kvm_vcpu *vcpu) return 0; } +static void kvm_trap_emul_flush_shadow_all(struct kvm *kvm) +{ + /* Flush GVA page tables and invalidate GVA ASIDs on all VCPUs */ + kvm_flush_remote_tlbs(kvm); +} + +static void kvm_trap_emul_flush_shadow_memslot(struct kvm *kvm, + const struct kvm_memory_slot *slot) +{ + kvm_trap_emul_flush_shadow_all(kvm); +} + static unsigned long kvm_trap_emul_num_regs(struct kvm_vcpu *vcpu) { return 0; @@ -963,6 +975,8 @@ static struct kvm_mips_callbacks kvm_trap_emul_callbacks = { .vcpu_init = kvm_trap_emul_vcpu_init, .vcpu_uninit = kvm_trap_emul_vcpu_uninit, .vcpu_setup = kvm_trap_emul_vcpu_setup, + .flush_shadow_all = kvm_trap_emul_flush_shadow_all, + .flush_shadow_memslot = kvm_trap_emul_flush_shadow_memslot, .gva_to_gpa = kvm_trap_emul_gva_to_gpa_cb, .queue_timer_int = kvm_mips_queue_timer_int_cb, .dequeue_timer_int = kvm_mips_dequeue_timer_int_cb, |