@@ -939,6 +939,7 @@ enum kvm_irqchip_mode {
#define APICV_INHIBIT_REASON_X2APIC 5
struct kvm_arch {
+ unsigned long n_memslots_pages;
unsigned long n_used_mmu_pages;
unsigned long n_requested_mmu_pages;
unsigned long n_max_mmu_pages;
@@ -1426,7 +1427,6 @@ void kvm_mmu_slot_largepage_remove_write_access(struct kvm *kvm,
struct kvm_memory_slot *memslot);
void kvm_mmu_zap_all(struct kvm *kvm);
void kvm_mmu_invalidate_mmio_sptes(struct kvm *kvm, u64 gen);
-unsigned long kvm_mmu_calculate_default_mmu_pages(struct kvm *kvm);
void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned long kvm_nr_mmu_pages);
int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
@@ -5869,30 +5869,6 @@ int kvm_mmu_module_init(void)
return ret;
}
-/*
- * Calculate mmu pages needed for kvm.
- */
-unsigned long kvm_mmu_calculate_default_mmu_pages(struct kvm *kvm)
-{
- unsigned long nr_mmu_pages;
- unsigned long nr_pages = 0;
- struct kvm_memslots *slots;
- struct kvm_memory_slot *memslot;
- int i;
-
- for (i = 0; i < KVM_ADDRESS_SPACE_NUM; i++) {
- slots = __kvm_memslots(kvm, i);
-
- kvm_for_each_memslot(memslot, slots)
- nr_pages += memslot->npages;
- }
-
- nr_mmu_pages = nr_pages * KVM_PERMILLE_MMU_PAGES / 1000;
- nr_mmu_pages = max(nr_mmu_pages, KVM_MIN_ALLOC_MMU_PAGES);
-
- return nr_mmu_pages;
-}
-
void kvm_mmu_destroy(struct kvm_vcpu *vcpu)
{
kvm_mmu_unload(vcpu);
@@ -10959,9 +10959,21 @@ void kvm_arch_commit_memory_region(struct kvm *kvm,
const struct kvm_memory_slot *new,
enum kvm_mr_change change)
{
- if (!kvm->arch.n_requested_mmu_pages)
- kvm_mmu_change_mmu_pages(kvm,
- kvm_mmu_calculate_default_mmu_pages(kvm));
+ if (change == KVM_MR_CREATE)
+ kvm->arch.n_memslots_pages += new->npages;
+ else if (change == KVM_MR_DELETE) {
+ WARN_ON(kvm->arch.n_memslots_pages < old->npages);
+ kvm->arch.n_memslots_pages -= old->npages;
+ }
+
+ if (!kvm->arch.n_requested_mmu_pages) {
+ unsigned long nr_mmu_pages;
+
+ nr_mmu_pages = kvm->arch.n_memslots_pages *
+ KVM_PERMILLE_MMU_PAGES / 1000;
+ nr_mmu_pages = max(nr_mmu_pages, KVM_MIN_ALLOC_MMU_PAGES);
+ kvm_mmu_change_mmu_pages(kvm, nr_mmu_pages);
+ }
/*
* FIXME: const-ify all uses of struct kvm_memory_slot.