Merge tag 'for-linus-5.19-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen updates from Juergen Gross:

 - decouple the PV interface from kernel internals in the Xen
   scsifront/scsiback pv drivers

 - harden the Xen scsifront PV driver against a malicious backend driver

 - simplify Xen PV frontend driver ring page setup

 - support Xen setups with multiple domains created at boot time to
   tolerate Xenstore coming up late

 - two small cleanup patches

* tag 'for-linus-5.19-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (29 commits)
  xen: add support for initializing xenstore later as HVM domain
  xen: sync xs_wire.h header with upstream xen
  x86: xen: remove STACK_FRAME_NON_STANDARD from xen_cpuid
  xen-blk{back,front}: Update contact points for buffer_squeeze_duration_ms and feature_persistent
  xen/xenbus: eliminate xenbus_grant_ring()
  xen/sndfront: use xenbus_setup_ring() and xenbus_teardown_ring()
  xen/usbfront: use xenbus_setup_ring() and xenbus_teardown_ring()
  xen/scsifront: use xenbus_setup_ring() and xenbus_teardown_ring()
  xen/pcifront: use xenbus_setup_ring() and xenbus_teardown_ring()
  xen/drmfront: use xenbus_setup_ring() and xenbus_teardown_ring()
  xen/tpmfront: use xenbus_setup_ring() and xenbus_teardown_ring()
  xen/netfront: use xenbus_setup_ring() and xenbus_teardown_ring()
  xen/blkfront: use xenbus_setup_ring() and xenbus_teardown_ring()
  xen/xenbus: add xenbus_setup_ring() service function
  xen: update ring.h
  xen/shbuf: switch xen-front-pgdir-shbuf to use INVALID_GRANT_REF
  xen/dmabuf: switch gntdev-dmabuf to use INVALID_GRANT_REF
  xen/sound: switch xen_snd_front to use INVALID_GRANT_REF
  xen/drm: switch xen_drm_front to use INVALID_GRANT_REF
  xen/usb: switch xen-hcd to use INVALID_GRANT_REF
  ...