diff options
| -rw-r--r-- | arch/x86/kvm/svm/sev.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c index f37e23496b64..15ac2b907260 100644 --- a/arch/x86/kvm/svm/sev.c +++ b/arch/x86/kvm/svm/sev.c @@ -682,7 +682,6 @@ static struct page **sev_pin_memory(struct kvm *kvm, unsigned long uaddr, int npinned; unsigned long total_npages, lock_limit; struct page **pages; - unsigned long first, last; int ret; lockdep_assert_held(&kvm->lock); @@ -692,12 +691,10 @@ static struct page **sev_pin_memory(struct kvm *kvm, unsigned long uaddr, /* * Calculate the number of pages that need to be pinned to cover the - * entire range. Note! This isn't simply ulen >> PAGE_SHIFT, as KVM + * entire range. Note! This isn't simply PFN_DOWN(ulen), as KVM * doesn't require the incoming address+size to be page aligned! */ - first = (uaddr & PAGE_MASK) >> PAGE_SHIFT; - last = ((uaddr + ulen - 1) & PAGE_MASK) >> PAGE_SHIFT; - npages = (last - first + 1); + npages = PFN_DOWN(uaddr + ulen - 1) - PFN_DOWN(uaddr) + 1; if (npages > INT_MAX) return ERR_PTR(-EINVAL); |