[GIT PULL] (swiotlb) for-linus-5.3

[Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>]

Hey Linus,

I've sent you a prior git pull which contained two of the fixes, and this
one expands on the one from Juergen which had been committed a while ago
but hadn't been fully tested until during the merge window so I delayed
until now.

Please git pull the following branch:

git push gitolite@ra.kernel.org:/pub/scm/linux/kernel/git/konrad/swiotlb.git for/linus-5.3

which contains fixes for properly determining if the SWIOTLB is actually enabled on ARM
platforms, compiler fixes, and corruption fix when used with Xen where
we would have inconsistent mappings of multiple PFNs to the same MFN when
destroying long setup DMA buffers.


If you already have pulled 'for-linus-5.2' your git diff stat will be a bit
different.

 drivers/xen/swiotlb-xen.c  | 34 ++++++++++------------------------
 include/linux/page-flags.h |  4 ++++
 2 files changed, 14 insertions(+), 24 deletions(-)


Arnd Bergmann (1):
      swiotlb: fix phys_addr_t overflow warning

Florian Fainelli (2):
      swiotlb: Group identical cleanup in swiotlb_cleanup()
      swiotlb: Return consistent SWIOTLB segments/nr_tbl

Juergen Gross (3):
      xen/swiotlb: fix condition for calling xen_destroy_contiguous_region()
      xen/swiotlb: simplify range_straddles_page_boundary()
      xen/swiotlb: remember having called xen_create_contiguous_region()