KVM: x86/mmu: use helper macro SPTE_ENT_PER_PAGE

Use helper macro SPTE_ENT_PER_PAGE to get the number of spte entries
per page. Minor readability improvement.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220913085452.25561-1-linmiaohe@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 639ac64a4e8c9d3ea22e47fd375735c3d2da8d17..2640871bdcf174d314ebc1b26d377d32330dc488 100644 (file)
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -1645,7 +1645,7 @@ static int is_empty_shadow_page(u64 *spt)
        u64 *pos;
        u64 *end;
 
-       for (pos = spt, end = pos + PAGE_SIZE / sizeof(u64); pos != end; pos++)
+       for (pos = spt, end = pos + SPTE_ENT_PER_PAGE; pos != end; pos++)
                if (is_shadow_present_pte(*pos)) {
                        printk(KERN_ERR "%s: %p %llx\n", __func__,
                               pos, *pos);