simply make the slot memory allocation function to count how much it
allocate, and create blocks of mmu pages by this,
in addition it initiate the lists.
--- kvm_main.c 2007-08-15 11:37:07.000000000 +0300
+++ new_kvm_main.c 2007-08-19 06:21:45.000000000 +0300
@@ -297,6 +297,8 @@
kvm_io_bus_init(&kvm->pio_bus);
mutex_init(&kvm->lock);
INIT_LIST_HEAD(&kvm->active_mmu_pages);
+ INIT_LIST_HEAD(&kvm->mmu_page_hash_blocks);
+ kvm->n_mmu_page_hash_blocks = 0;
kvm_io_bus_init(&kvm->mmio_bus);
spin_lock(&kvm_lock);
list_add(&kvm->vm_list, &vm_list);
@@ -336,6 +338,10 @@
kvm_free_physmem_slot(&kvm->memslots[i], NULL);
}
+static void kvm_free_mmu_hash(struct kvm *kvm)
+{
+}
+
static void free_pio_guest_pages(struct kvm_vcpu *vcpu)
{
int i;
@@ -382,6 +388,7 @@
kvm_io_bus_destroy(&kvm->mmio_bus);
kvm_free_vcpus(kvm);
kvm_free_physmem(kvm);
+ kvm_free_mmu_hash(kvm);
kfree(kvm);
}
@@ -637,6 +644,7 @@
struct kvm_memory_slot *memslot;
struct kvm_memory_slot old, new;
int memory_config_version;
+ int total_mmu_page_hash_blocks;
r = -EINVAL;
/* General sanity checks */
@@ -740,6 +748,20 @@
if (mem->slot >= kvm->nmemslots)
kvm->nmemslots = mem->slot + 1;
+ total_mmu_page_hash_blocks = (npages + kvm->n_mmu_page_hash_blocks *
+ KVM_NUM_MMU_PAGES_BLOCK * KVM_MMU_PAGES_DIVIDER) /
+ KVM_NUM_MMU_PAGES_BLOCK / KVM_MMU_PAGES_DIVIDER;
+
+ for (; kvm->n_mmu_page_hash_blocks < total_mmu_page_hash_blocks; ++ kvm->n_mmu_page_hash_blocks) {
+ struct kvm_mmu_hash_block *hash_block = vmalloc(sizeof(struct kvm_mmu_hash_block));
+
+ if (!hash_block)
+ goto out_unlock;
+
+ memset(hash_block, 0, sizeof(struct kvm_mmu_hash_block));
+ list_add(&hash_block->head, &kvm->mmu_page_hash_blocks);
+ }
+
*memslot = new;
++kvm->memory_config_version;
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