KVM: introduce KVM_ERR_PTR_BAD_PAGE
It is used to eliminate the overload of function call and cleanup
the code
Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/virt/kvm/async_pf.c b/virt/kvm/async_pf.c
index 7972278..56f5533 100644
--- a/virt/kvm/async_pf.c
+++ b/virt/kvm/async_pf.c
@@ -203,7 +203,7 @@
if (!work)
return -ENOMEM;
- work->page = get_bad_page();
+ work->page = KVM_ERR_PTR_BAD_PAGE;
INIT_LIST_HEAD(&work->queue); /* for list_del to work */
spin_lock(&vcpu->async_pf.lock);
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index eb73e5f..93d3c6e 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -922,17 +922,6 @@
}
EXPORT_SYMBOL_GPL(kvm_disable_largepages);
-int is_error_page(struct page *page)
-{
- return IS_ERR(page);
-}
-EXPORT_SYMBOL_GPL(is_error_page);
-
-struct page *get_bad_page(void)
-{
- return ERR_PTR(-ENOENT);
-}
-
static inline unsigned long bad_hva(void)
{
return PAGE_OFFSET;
@@ -1179,7 +1168,7 @@
WARN_ON(kvm_is_mmio_pfn(pfn));
if (is_error_pfn(pfn) || kvm_is_mmio_pfn(pfn))
- return get_bad_page();
+ return KVM_ERR_PTR_BAD_PAGE;
return pfn_to_page(pfn);
}