KVM: MMU: return bool in __rmap_write_protect

The reture value of __rmap_write_protect is either 1 or 0, use
true/false instead of these

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 569cd66..5dd2242 100644 (file)
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1050,11 +1050,12 @@ static void drop_spte(struct kvm *kvm, u64 *sptep)
                rmap_remove(kvm, sptep);
 }
 
-static int __rmap_write_protect(struct kvm *kvm, unsigned long *rmapp, int level)
+static bool
+__rmap_write_protect(struct kvm *kvm, unsigned long *rmapp, int level)
 {
        u64 *sptep;
        struct rmap_iterator iter;
-       int write_protected = 0;
+       bool write_protected = false;
 
        for (sptep = rmap_get_first(*rmapp, &iter); sptep;) {
                BUG_ON(!(*sptep & PT_PRESENT_MASK));
@@ -1075,7 +1076,7 @@ static int __rmap_write_protect(struct kvm *kvm, unsigned long *rmapp, int level
                        sptep = rmap_get_first(*rmapp, &iter);
                }
 
-               write_protected = 1;
+               write_protected = true;
        }
 
        return write_protected;
@@ -1106,12 +1107,12 @@ void kvm_mmu_write_protect_pt_masked(struct kvm *kvm,
        }
 }
 
-static int rmap_write_protect(struct kvm *kvm, u64 gfn)
+static bool rmap_write_protect(struct kvm *kvm, u64 gfn)
 {
        struct kvm_memory_slot *slot;
        unsigned long *rmapp;
        int i;
-       int write_protected = 0;
+       bool write_protected = false;
 
        slot = gfn_to_memslot(kvm, gfn);
 
@@ -1700,7 +1701,7 @@ static void mmu_sync_children(struct kvm_vcpu *vcpu,
 
        kvm_mmu_pages_init(parent, &parents, &pages);
        while (mmu_unsync_walk(parent, &pages)) {
-               int protected = 0;
+               bool protected = false;
 
                for_each_sp(pages, sp, parents, i)
                        protected |= rmap_write_protect(vcpu->kvm, sp->gfn);