From: Ingo Molnar Date: Sat, 6 Jan 2007 00:36:59 +0000 (-0800) Subject: [PATCH] KVM: Simplify mmu_alloc_roots() X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=68a99f6d37aa65e848e09ec6ea52848e93bd5de2;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git [PATCH] KVM: Simplify mmu_alloc_roots() Small optimization/cleanup: page == page_header(page->page_hpa) Signed-off-by: Ingo Molnar Signed-off-by: Avi Kivity Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/kvm/mmu.c b/drivers/kvm/mmu.c index 4118e504e647..c6f972914f08 100644 --- a/drivers/kvm/mmu.c +++ b/drivers/kvm/mmu.c @@ -820,9 +820,9 @@ static void mmu_alloc_roots(struct kvm_vcpu *vcpu) 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; @@ -836,10 +836,10 @@ static void mmu_alloc_roots(struct kvm_vcpu *vcpu) 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; }