Merge tag 'kvm-3.7-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM updates from Avi Kivity:
 "Highlights of the changes for this release include support for vfio
  level triggered interrupts, improved big real mode support on older
  Intels, a streamlines guest page table walker, guest APIC speedups,
  PIO optimizations, better overcommit handling, and read-only memory."

* tag 'kvm-3.7-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (138 commits)
  KVM: s390: Fix vcpu_load handling in interrupt code
  KVM: x86: Fix guest debug across vcpu INIT reset
  KVM: Add resampling irqfds for level triggered interrupts
  KVM: optimize apic interrupt delivery
  KVM: MMU: Eliminate pointless temporary 'ac'
  KVM: MMU: Avoid access/dirty update loop if all is well
  KVM: MMU: Eliminate eperm temporary
  KVM: MMU: Optimize is_last_gpte()
  KVM: MMU: Simplify walk_addr_generic() loop
  KVM: MMU: Optimize pte permission checks
  KVM: MMU: Update accessed and dirty bits after guest pagetable walk
  KVM: MMU: Move gpte_access() out of paging_tmpl.h
  KVM: MMU: Optimize gpte_access() slightly
  KVM: MMU: Push clean gpte write protection out of gpte_access()
  KVM: clarify kvmclock documentation
  KVM: make processes waiting on vcpu mutex killable
  KVM: SVM: Make use of asm.h
  KVM: VMX: Make use of asm.h
  KVM: VMX: Make lto-friendly
  KVM: x86: lapic: Clean up find_highest_vector() and count_vectors()
  ...

Conflicts:
	arch/s390/include/asm/processor.h
	arch/x86/kvm/i8259.c

1 files changed, 11 insertions, 5 deletions

diff --git a/virt/kvm/iommu.c b/virt/kvm/iommu.c
index e9fff9830bf0..037cb6730e68 100644
--- a/virt/kvm/iommu.c
+++ b/virt/kvm/iommu.c
@@ -42,13 +42,13 @@ static int kvm_iommu_unmap_memslots(struct kvm *kvm);
 static void kvm_iommu_put_pages(struct kvm *kvm,
                                 gfn_t base_gfn, unsigned long npages);
 
-static pfn_t kvm_pin_pages(struct kvm *kvm, struct kvm_memory_slot *slot,
-                           gfn_t gfn, unsigned long size)
+static pfn_t kvm_pin_pages(struct kvm_memory_slot *slot, gfn_t gfn,
+                           unsigned long size)
 {
         gfn_t end_gfn;
         pfn_t pfn;
 
-        pfn     = gfn_to_pfn_memslot(kvm, slot, gfn);
+        pfn     = gfn_to_pfn_memslot(slot, gfn);
         end_gfn = gfn + (size >> PAGE_SHIFT);
         gfn    += 1;
 
@@ -56,7 +56,7 @@ static pfn_t kvm_pin_pages(struct kvm *kvm, struct kvm_memory_slot *slot,
                 return pfn;
 
         while (gfn < end_gfn)
-                gfn_to_pfn_memslot(kvm, slot, gfn++);
+                gfn_to_pfn_memslot(slot, gfn++);
 
         return pfn;
 }
@@ -105,7 +105,7 @@ int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot)
                  * Pin all pages we are about to map in memory. This is
                  * important because we unmap and unpin in 4kb steps later.
                  */
-                pfn = kvm_pin_pages(kvm, slot, gfn, page_size);
+                pfn = kvm_pin_pages(slot, gfn, page_size);
                 if (is_error_pfn(pfn)) {
                         gfn += 1;
                         continue;
@@ -300,6 +300,12 @@ static void kvm_iommu_put_pages(struct kvm *kvm,
 
                 /* Get physical address */
                 phys = iommu_iova_to_phys(domain, gfn_to_gpa(gfn));
+
+                if (!phys) {
+                        gfn++;
+                        continue;
+                }
+
                 pfn  = phys >> PAGE_SHIFT;
 
                 /* Unmap address from IO address space */