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| author | Xiao Guangrong <xiaoguangrong.eric@gmail.com> | 2011-11-24 19:04:35 +0800 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-12-27 11:17:39 +0200 |
| commit | 28a37544fb0223eb9805d2567b88f7360edec52a (patch) | |
| tree | 83afb64f8448303f9486eb6c87980695611275ab /virt/kvm | |
| parent | be6ba0f0962a39091c52eb9167ddea201fe80716 (diff) | |
| download | linux-28a37544fb0223eb9805d2567b88f7360edec52a.tar.gz | |
KVM: introduce id_to_memslot function
Introduce id_to_memslot to get memslot by slot id Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'virt/kvm')
| -rw-r--r-- | virt/kvm/kvm_main.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 4c2900c5d81d..7b6084999424 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; |