KVM: MMU: cleanup mapping-level

Use min() to cleanup mapping_level

Reviewed-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 2a8d99a1e034..5356d8d2d496 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -832,8 +832,7 @@ static int mapping_level(struct kvm_vcpu *vcpu, gfn_t large_gfn)
         if (host_level == PT_PAGE_TABLE_LEVEL)
                 return host_level;
 
-        max_level = kvm_x86_ops->get_lpage_level() < host_level ?
-                kvm_x86_ops->get_lpage_level() : host_level;
+        max_level = min(kvm_x86_ops->get_lpage_level(), host_level);
 
         for (level = PT_DIRECTORY_LEVEL; level <= max_level; ++level)
                 if (has_wrprotected_page(vcpu->kvm, large_gfn, level))