Merge tag 'stable/for-linus-4.1-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen features and fixes from David Vrabel:

 - use a single source list of hypercalls, generating other tables etc.
   at build time.

 - add a "Xen PV" APIC driver to support >255 VCPUs in PV guests.

 - significant performance improve to guest save/restore/migration.

 - scsiback/front save/restore support.

 - infrastructure for multi-page xenbus rings.

 - misc fixes.

* tag 'stable/for-linus-4.1-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/pci: Try harder to get PXM information for Xen
  xenbus_client: Extend interface to support multi-page ring
  xen-pciback: also support disabling of bus-mastering and memory-write-invalidate
  xen: support suspend/resume in pvscsi frontend
  xen: scsiback: add LUN of restored domain
  xen-scsiback: define a pr_fmt macro with xen-pvscsi
  xen/mce: fix up xen_late_init_mcelog() error handling
  xen/privcmd: improve performance of MMAPBATCH_V2
  xen: unify foreign GFN map/unmap for auto-xlated physmap guests
  x86/xen/apic: WARN with details.
  x86/xen: Provide a "Xen PV" APIC driver to support >255 VCPUs
  xen/pciback: Don't print scary messages when unsupported by hypervisor.
  xen: use generated hypercall symbols in arch/x86/xen/xen-head.S
  xen: use generated hypervisor symbols in arch/x86/xen/trace.c
  xen: synchronize include/xen/interface/xen.h with xen
  xen: build infrastructure for generating hypercall depending symbols
  xen: balloon: Use static attribute groups for sysfs entries
  xen: pcpu: Use static attribute groups for sysfs entry

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/pci/xen-pcifront.c b/drivers/pci/xen-pcifront.c
index b1ffebec9b9e..7cfd2db02deb 100644
--- a/drivers/pci/xen-pcifront.c
+++ b/drivers/pci/xen-pcifront.c
@@ -777,12 +777,13 @@ static int pcifront_publish_info(struct pcifront_device *pdev)
 {
 	int err = 0;
 	struct xenbus_transaction trans;
+	grant_ref_t gref;
 
-	err = xenbus_grant_ring(pdev->xdev, virt_to_mfn(pdev->sh_info));
+	err = xenbus_grant_ring(pdev->xdev, pdev->sh_info, 1, &gref);
 	if (err < 0)
 		goto out;
 
-	pdev->gnt_ref = err;
+	pdev->gnt_ref = gref;
 
 	err = xenbus_alloc_evtchn(pdev->xdev, &pdev->evtchn);
 	if (err)