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KVM: use kvm_memslots whenever possible

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kvm_memslots provides lockdep checking.  Use it consistently instead of
explicit dereferencing of kvm->memslots.

Reviewed-by: Radim Krcmar <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
This commit is contained in:
Paolo Bonzini 2015-05-17 16:20:07 +02:00
commit 9f6b802978
8 changed files with 31 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

16
virt/kvm/kvm_main.c
View file

@ -734,7 +734,7 @@ static int check_memory_region_flags(struct kvm_userspace_memory_region *mem)
static struct kvm_memslots *install_new_memslots(struct kvm *kvm,
struct kvm_memslots *slots)
{
struct kvm_memslots *old_memslots = kvm->memslots;
struct kvm_memslots *old_memslots = kvm_memslots(kvm);
/*
* Set the low bit in the generation, which disables SPTE caching
@ -799,7 +799,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
if (mem->guest_phys_addr + mem->memory_size < mem->guest_phys_addr)
goto out;
slot = id_to_memslot(kvm->memslots, mem->slot);
slot = id_to_memslot(kvm_memslots(kvm), mem->slot);
base_gfn = mem->guest_phys_addr >> PAGE_SHIFT;
npages = mem->memory_size >> PAGE_SHIFT;
@ -842,7 +842,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
if ((change == KVM_MR_CREATE) || (change == KVM_MR_MOVE)) {
/* Check for overlaps */
r = -EEXIST;
kvm_for_each_memslot(slot, kvm->memslots) {
kvm_for_each_memslot(slot, kvm_memslots(kvm)) {
if ((slot->id >= KVM_USER_MEM_SLOTS) ||
(slot->id == mem->slot))
continue;
@ -873,7 +873,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
slots = kvm_kvzalloc(sizeof(struct kvm_memslots));
if (!slots)
goto out_free;
memcpy(slots, kvm->memslots, sizeof(struct kvm_memslots));
memcpy(slots, kvm_memslots(kvm), sizeof(struct kvm_memslots));
if ((change == KVM_MR_DELETE) || (change == KVM_MR_MOVE)) {
slot = id_to_memslot(slots, mem->slot);
@ -966,6 +966,7 @@ static int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
int kvm_get_dirty_log(struct kvm *kvm,
struct kvm_dirty_log *log, int *is_dirty)
{
struct kvm_memslots *slots;
struct kvm_memory_slot *memslot;
int r, i;
unsigned long n;
@ -975,7 +976,8 @@ int kvm_get_dirty_log(struct kvm *kvm,
if (log->slot >= KVM_USER_MEM_SLOTS)
goto out;
memslot = id_to_memslot(kvm->memslots, log->slot);
slots = kvm_memslots(kvm);
memslot = id_to_memslot(slots, log->slot);
r = -ENOENT;
if (!memslot->dirty_bitmap)
goto out;
@ -1024,6 +1026,7 @@ EXPORT_SYMBOL_GPL(kvm_get_dirty_log);
int kvm_get_dirty_log_protect(struct kvm *kvm,
struct kvm_dirty_log *log, bool *is_dirty)
{
struct kvm_memslots *slots;
struct kvm_memory_slot *memslot;
int r, i;
unsigned long n;
@ -1034,7 +1037,8 @@ int kvm_get_dirty_log_protect(struct kvm *kvm,
if (log->slot >= KVM_USER_MEM_SLOTS)
goto out;
memslot = id_to_memslot(kvm->memslots, log->slot);
slots = kvm_memslots(kvm);
memslot = id_to_memslot(slots, log->slot);
dirty_bitmap = memslot->dirty_bitmap;
r = -ENOENT;