Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
[PATCH] KVM: Simplify mmu_alloc_roots()
Small optimization/cleanup:
page == page_header(page->page_hpa)
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
authored by
Ingo Molnar
and committed by
Linus Torvalds
68a99f6d
d21225ee
+6
-6
+6
-6
drivers/kvm/mmu.c
+6
-6
drivers/kvm/mmu.c
···
820
820
hpa_t root = vcpu->mmu.root_hpa;
821
821
822
822
ASSERT(!VALID_PAGE(root));
823
-
root = kvm_mmu_get_page(vcpu, root_gfn, 0,
824
-
PT64_ROOT_LEVEL, 0, NULL)->page_hpa;
825
-
page = page_header(root);
823
+
page = kvm_mmu_get_page(vcpu, root_gfn, 0,
824
+
PT64_ROOT_LEVEL, 0, NULL);
825
+
root = page->page_hpa;
826
826
++page->root_count;
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827
vcpu->mmu.root_hpa = root;
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828
return;
···
836
836
root_gfn = vcpu->pdptrs[i] >> PAGE_SHIFT;
837
837
else if (vcpu->mmu.root_level == 0)
838
838
root_gfn = 0;
839
-
root = kvm_mmu_get_page(vcpu, root_gfn, i << 30,
839
+
page = kvm_mmu_get_page(vcpu, root_gfn, i << 30,
840
840
PT32_ROOT_LEVEL, !is_paging(vcpu),
841
-
NULL)->page_hpa;
842
-
page = page_header(root);
841
+
NULL);
842
+
root = page->page_hpa;
843
843
++page->root_count;
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844
vcpu->mmu.pae_root[i] = root | PT_PRESENT_MASK;
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845
}