diff options
Diffstat (limited to 'virt/kvm/kvm_main.c')
| -rw-r--r-- | virt/kvm/kvm_main.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 93d3c6e063c8..eafba99d1070 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -102,9 +102,6 @@ static bool largepages_enabled = true; bool kvm_is_mmio_pfn(pfn_t pfn) { - if (is_error_pfn(pfn)) - return false; - if (pfn_valid(pfn)) { int reserved; struct page *tail = pfn_to_page(pfn); @@ -1165,10 +1162,13 @@ EXPORT_SYMBOL_GPL(gfn_to_page_many_atomic); static struct page *kvm_pfn_to_page(pfn_t pfn) { - WARN_ON(kvm_is_mmio_pfn(pfn)); + if (is_error_pfn(pfn)) + return KVM_ERR_PTR_BAD_PAGE; - if (is_error_pfn(pfn) || kvm_is_mmio_pfn(pfn)) + if (kvm_is_mmio_pfn(pfn)) { + WARN_ON(1); return KVM_ERR_PTR_BAD_PAGE; + } return pfn_to_page(pfn); } @@ -1193,7 +1193,9 @@ EXPORT_SYMBOL_GPL(kvm_release_page_clean); void kvm_release_pfn_clean(pfn_t pfn) { - if (!is_error_pfn(pfn) && !kvm_is_mmio_pfn(pfn)) + WARN_ON(is_error_pfn(pfn)); + + if (!kvm_is_mmio_pfn(pfn)) put_page(pfn_to_page(pfn)); } EXPORT_SYMBOL_GPL(kvm_release_pfn_clean); |