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| author | Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> | 2012-08-03 11:41:22 +0400 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2012-08-06 17:04:55 +0400 |
| commit | 6cede2e6794be6b0649f62d3681e0c4aff5a9270 (patch) | |
| tree | b05fdcfd0db7974c7ed7f036d07520ac4c12202f | |
| parent | 9a592a953880fd6981955e69c1476ce541d9bd16 (diff) | |
| download | linux-6cede2e6794be6b0649f62d3681e0c4aff5a9270.tar.xz | |
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>
| -rw-r--r-- | include/linux/kvm_host.h | 9 | ||||
| -rw-r--r-- | virt/kvm/async_pf.c | 2 | ||||
| -rw-r--r-- | virt/kvm/kvm_main.c | 13 |
3 files changed, 9 insertions, 15 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index e2dcc7cb2284..ce7c32950f4e 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -68,6 +68,13 @@ static inline int is_invalid_pfn(pfn_t pfn) return !is_noslot_pfn(pfn) && is_error_pfn(pfn); } +#define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT)) + +static inline int is_error_page(struct page *page) +{ + return IS_ERR(page); +} + /* * vcpu->requests bit members */ @@ -409,7 +416,6 @@ id_to_memslot(struct kvm_memslots *slots, int id) return slot; } -int is_error_page(struct page *page); int kvm_is_error_hva(unsigned long addr); int kvm_set_memory_region(struct kvm *kvm, struct kvm_userspace_memory_region *mem, @@ -436,7 +442,6 @@ void kvm_arch_flush_shadow(struct kvm *kvm); int gfn_to_page_many_atomic(struct kvm *kvm, gfn_t gfn, struct page **pages, int nr_pages); -struct page *get_bad_page(void); struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); void kvm_release_page_clean(struct page *page); diff --git a/virt/kvm/async_pf.c b/virt/kvm/async_pf.c index 79722782d9d7..56f553391896 100644 --- a/virt/kvm/async_pf.c +++ b/virt/kvm/async_pf.c @@ -203,7 +203,7 @@ int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu) 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 eb73e5f13678..93d3c6e063c8 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -922,17 +922,6 @@ void kvm_disable_largepages(void) } 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 @@ static struct page *kvm_pfn_to_page(pfn_t pfn) 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); } |