KVM: Use page_private()/set_page_private() apis
Besides using an established api, this allows using kvm in older kernels.
Signed-off-by: Markus Rechberger <markus.rechberger@amd.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
diff --git a/drivers/kvm/mmu.c b/drivers/kvm/mmu.c
index be79377..a1a9336 100644
--- a/drivers/kvm/mmu.c
+++ b/drivers/kvm/mmu.c
@@ -298,18 +298,18 @@
if (!is_rmap_pte(*spte))
return;
page = pfn_to_page((*spte & PT64_BASE_ADDR_MASK) >> PAGE_SHIFT);
- if (!page->private) {
+ if (!page_private(page)) {
rmap_printk("rmap_add: %p %llx 0->1\n", spte, *spte);
- page->private = (unsigned long)spte;
- } else if (!(page->private & 1)) {
+ set_page_private(page,(unsigned long)spte);
+ } else if (!(page_private(page) & 1)) {
rmap_printk("rmap_add: %p %llx 1->many\n", spte, *spte);
desc = mmu_alloc_rmap_desc(vcpu);
- desc->shadow_ptes[0] = (u64 *)page->private;
+ desc->shadow_ptes[0] = (u64 *)page_private(page);
desc->shadow_ptes[1] = spte;
- page->private = (unsigned long)desc | 1;
+ set_page_private(page,(unsigned long)desc | 1);
} else {
rmap_printk("rmap_add: %p %llx many->many\n", spte, *spte);
- desc = (struct kvm_rmap_desc *)(page->private & ~1ul);
+ desc = (struct kvm_rmap_desc *)(page_private(page) & ~1ul);
while (desc->shadow_ptes[RMAP_EXT-1] && desc->more)
desc = desc->more;
if (desc->shadow_ptes[RMAP_EXT-1]) {
@@ -337,12 +337,12 @@
if (j != 0)
return;
if (!prev_desc && !desc->more)
- page->private = (unsigned long)desc->shadow_ptes[0];
+ set_page_private(page,(unsigned long)desc->shadow_ptes[0]);
else
if (prev_desc)
prev_desc->more = desc->more;
else
- page->private = (unsigned long)desc->more | 1;
+ set_page_private(page,(unsigned long)desc->more | 1);
mmu_free_rmap_desc(vcpu, desc);
}
@@ -356,20 +356,20 @@
if (!is_rmap_pte(*spte))
return;
page = pfn_to_page((*spte & PT64_BASE_ADDR_MASK) >> PAGE_SHIFT);
- if (!page->private) {
+ if (!page_private(page)) {
printk(KERN_ERR "rmap_remove: %p %llx 0->BUG\n", spte, *spte);
BUG();
- } else if (!(page->private & 1)) {
+ } else if (!(page_private(page) & 1)) {
rmap_printk("rmap_remove: %p %llx 1->0\n", spte, *spte);
- if ((u64 *)page->private != spte) {
+ if ((u64 *)page_private(page) != spte) {
printk(KERN_ERR "rmap_remove: %p %llx 1->BUG\n",
spte, *spte);
BUG();
}
- page->private = 0;
+ set_page_private(page,0);
} else {
rmap_printk("rmap_remove: %p %llx many->many\n", spte, *spte);
- desc = (struct kvm_rmap_desc *)(page->private & ~1ul);
+ desc = (struct kvm_rmap_desc *)(page_private(page) & ~1ul);
prev_desc = NULL;
while (desc) {
for (i = 0; i < RMAP_EXT && desc->shadow_ptes[i]; ++i)
@@ -398,11 +398,11 @@
BUG_ON(!slot);
page = gfn_to_page(slot, gfn);
- while (page->private) {
- if (!(page->private & 1))
- spte = (u64 *)page->private;
+ while (page_private(page)) {
+ if (!(page_private(page) & 1))
+ spte = (u64 *)page_private(page);
else {
- desc = (struct kvm_rmap_desc *)(page->private & ~1ul);
+ desc = (struct kvm_rmap_desc *)(page_private(page) & ~1ul);
spte = desc->shadow_ptes[0];
}
BUG_ON(!spte);
@@ -1218,7 +1218,7 @@
INIT_LIST_HEAD(&page_header->link);
if ((page = alloc_page(GFP_KERNEL)) == NULL)
goto error_1;
- page->private = (unsigned long)page_header;
+ set_page_private(page, (unsigned long)page_header);
page_header->page_hpa = (hpa_t)page_to_pfn(page) << PAGE_SHIFT;
memset(__va(page_header->page_hpa), 0, PAGE_SIZE);
list_add(&page_header->link, &vcpu->free_pages);