diff options
| -rw-r--r-- | arch/ia64/kvm/kvm-ia64.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/kvm/book3s.c | 2 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx.c | 6 | ||||
| -rw-r--r-- | arch/x86/kvm/x86.c | 18 | ||||
| -rw-r--r-- | include/linux/kvm_host.h | 6 | ||||
| -rw-r--r-- | virt/kvm/kvm_main.c | 13 |
6 files changed, 30 insertions, 17 deletions
diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c index 42ad1f9..92d9f1e 100644 --- a/arch/ia64/kvm/kvm-ia64.c +++ b/arch/ia64/kvm/kvm-ia64.c @@ -1818,7 +1818,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, if (log->slot >= KVM_MEMORY_SLOTS) goto out; - memslot = &kvm->memslots->memslots[log->slot]; + memslot = id_to_memslot(kvm->memslots, log->slot); r = -ENOENT; if (!memslot->dirty_bitmap) goto out; diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c index a459479..e41ac6f 100644 --- a/arch/powerpc/kvm/book3s.c +++ b/arch/powerpc/kvm/book3s.c @@ -498,7 +498,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, /* If nothing is dirty, don't bother messing with page tables. */ if (is_dirty) { - memslot = &kvm->memslots->memslots[log->slot]; + memslot = id_to_memslot(kvm->memslots, log->slot); ga = memslot->base_gfn << PAGE_SHIFT; ga_end = ga + (memslot->npages << PAGE_SHIFT); diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index ba24022..8f19d91 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -2711,11 +2711,13 @@ static gva_t rmode_tss_base(struct kvm *kvm) { if (!kvm->arch.tss_addr) { struct kvm_memslots *slots; + struct kvm_memory_slot *slot; gfn_t base_gfn; slots = kvm_memslots(kvm); - base_gfn = slots->memslots[0].base_gfn + - kvm->memslots->memslots[0].npages - 3; + slot = id_to_memslot(slots, 0); + base_gfn = slot->base_gfn + slot->npages - 3; + return base_gfn << PAGE_SHIFT; } return kvm->arch.tss_addr; diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 917a287..b6776c6 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -3520,7 +3520,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, if (log->slot >= KVM_MEMORY_SLOTS) goto out; - memslot = &kvm->memslots->memslots[log->slot]; + memslot = id_to_memslot(kvm->memslots, log->slot); r = -ENOENT; if (!memslot->dirty_bitmap) goto out; @@ -3531,27 +3531,27 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, /* If nothing is dirty, don't bother messing with page tables. */ if (nr_dirty_pages) { struct kvm_memslots *slots, *old_slots; - unsigned long *dirty_bitmap; + unsigned long *dirty_bitmap, *dirty_bitmap_head; - dirty_bitmap = memslot->dirty_bitmap_head; - if (memslot->dirty_bitmap == dirty_bitmap) - dirty_bitmap += n / sizeof(long); - memset(dirty_bitmap, 0, n); + dirty_bitmap = memslot->dirty_bitmap; + dirty_bitmap_head = memslot->dirty_bitmap_head; + if (dirty_bitmap == dirty_bitmap_head) + dirty_bitmap_head += n / sizeof(long); + memset(dirty_bitmap_head, 0, n); r = -ENOMEM; slots = kzalloc(sizeof(struct kvm_memslots), GFP_KERNEL); if (!slots) goto out; memcpy(slots, kvm->memslots, sizeof(struct kvm_memslots)); - memslot = &slots->memslots[log->slot]; - memslot->dirty_bitmap = dirty_bitmap; + memslot = id_to_memslot(slots, log->slot); memslot->nr_dirty_pages = 0; + memslot->dirty_bitmap = dirty_bitmap_head; update_memslots(slots, NULL); old_slots = kvm->memslots; rcu_assign_pointer(kvm->memslots, slots); synchronize_srcu_expedited(&kvm->srcu); - dirty_bitmap = old_slots->memslots[log->slot].dirty_bitmap; kfree(old_slots); write_protect_slot(kvm, memslot, dirty_bitmap, nr_dirty_pages); diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 392af47..123925c 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -333,6 +333,12 @@ static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) || lockdep_is_held(&kvm->slots_lock)); } +static inline struct kvm_memory_slot * +id_to_memslot(struct kvm_memslots *slots, int id) +{ + return &slots->memslots[id]; +} + #define HPA_MSB ((sizeof(hpa_t) * 8) - 1) #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB) static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; } diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 4c2900c..7b60849 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -634,8 +634,9 @@ void update_memslots(struct kvm_memslots *slots, struct kvm_memory_slot *new) { if (new) { int id = new->id; + struct kvm_memory_slot *old = id_to_memslot(slots, id); - slots->memslots[id] = *new; + *old = *new; if (id >= slots->nmemslots) slots->nmemslots = id + 1; } @@ -681,7 +682,7 @@ int __kvm_set_memory_region(struct kvm *kvm, if (mem->guest_phys_addr + mem->memory_size < mem->guest_phys_addr) goto out; - memslot = &kvm->memslots->memslots[mem->slot]; + memslot = id_to_memslot(kvm->memslots, mem->slot); base_gfn = mem->guest_phys_addr >> PAGE_SHIFT; npages = mem->memory_size >> PAGE_SHIFT; @@ -788,12 +789,16 @@ skip_lpage: #endif /* not defined CONFIG_S390 */ if (!npages) { + struct kvm_memory_slot *slot; + r = -ENOMEM; slots = kmemdup(kvm->memslots, sizeof(struct kvm_memslots), GFP_KERNEL); if (!slots) goto out_free; - slots->memslots[mem->slot].flags |= KVM_MEMSLOT_INVALID; + slot = id_to_memslot(slots, mem->slot); + slot->flags |= KVM_MEMSLOT_INVALID; + update_memslots(slots, NULL); old_memslots = kvm->memslots; @@ -897,7 +902,7 @@ int kvm_get_dirty_log(struct kvm *kvm, if (log->slot >= KVM_MEMORY_SLOTS) goto out; - memslot = &kvm->memslots->memslots[log->slot]; + memslot = id_to_memslot(kvm->memslots, log->slot); r = -ENOENT; if (!memslot->dirty_bitmap) goto out; |