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authorYaowei Bai <baiyaowei@cmss.chinamobile.com>2015-11-14 11:21:06 +0800
committerPaolo Bonzini <pbonzini@redhat.com>2015-11-25 17:24:23 +0100
commit33e941547923283f7f1022f3c35359ea9403d9a4 (patch)
treed1e245cfa1dc1bb0091520c3478188a527096e2c
parent4f52696a6c4d9b1449c462546f1318935c6973db (diff)
KVM: kvm_is_visible_gfn can be boolean
This patch makes kvm_is_visible_gfn return bool due to this particular function only using either one or zero as its return value. No functional change. Signed-off-by: Yaowei Bai <baiyaowei@cmss.chinamobile.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
-rw-r--r--include/linux/kvm_host.h2
-rw-r--r--virt/kvm/kvm_main.c6
2 files changed, 4 insertions, 4 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 14f95969b0f3..29119193a19f 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -641,7 +641,7 @@ int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
-int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
+bool kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn);
void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 484079efea5b..73cbb4120d0b 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1164,15 +1164,15 @@ struct kvm_memory_slot *kvm_vcpu_gfn_to_memslot(struct kvm_vcpu *vcpu, gfn_t gfn
return __gfn_to_memslot(kvm_vcpu_memslots(vcpu), gfn);
}
-int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn)
+bool kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn)
{
struct kvm_memory_slot *memslot = gfn_to_memslot(kvm, gfn);
if (!memslot || memslot->id >= KVM_USER_MEM_SLOTS ||
memslot->flags & KVM_MEMSLOT_INVALID)
- return 0;
+ return false;
- return 1;
+ return true;
}
EXPORT_SYMBOL_GPL(kvm_is_visible_gfn);