Subject: [patch] KVM: simplify mmu_alloc_roots()
From: Ingo Molnar <[EMAIL PROTECTED]>
small optimization/cleanup:
page == page_header(page->page_hpa)
Signed-off-by: Ingo Molnar <[EMAIL PROTECTED]>
---
drivers/kvm/mmu.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
Index: linux/drivers/kvm/mmu.c
===================================================================
--- linux.orig/drivers/kvm/mmu.c
+++ linux/drivers/kvm/mmu.c
@@ -818,9 +818,9 @@ static void mmu_alloc_roots(struct kvm_v
hpa_t root = vcpu->mmu.root_hpa;
ASSERT(!VALID_PAGE(root));
- root = kvm_mmu_get_page(vcpu, root_gfn, 0,
- PT64_ROOT_LEVEL, 0, NULL)->page_hpa;
- page = page_header(root);
+ page = kvm_mmu_get_page(vcpu, root_gfn, 0,
+ PT64_ROOT_LEVEL, 0, NULL);
+ root = page->page_hpa;
++page->root_count;
vcpu->mmu.root_hpa = root;
return;
@@ -834,10 +834,10 @@ static void mmu_alloc_roots(struct kvm_v
root_gfn = vcpu->pdptrs[i] >> PAGE_SHIFT;
else if (vcpu->mmu.root_level == 0)
root_gfn = 0;
- root = kvm_mmu_get_page(vcpu, root_gfn, i << 30,
+ page = kvm_mmu_get_page(vcpu, root_gfn, i << 30,
PT32_ROOT_LEVEL, !is_paging(vcpu),
- NULL)->page_hpa;
- page = page_header(root);
+ NULL);
+ root = page->page_hpa;
++page->root_count;
vcpu->mmu.pae_root[i] = root | PT_PRESENT_MASK;
}
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