Jason Gunthorpe 5d8ddc819c vfio: Use get_user_pages_longterm correctly ... commit bb94b55af3 upstream. The patch noted in the fixes below converted get_user_pages_fast() to get_user_pages_longterm(), however the two calls differ in a few ways. First _fast() is documented to not require the mmap_sem, while _longterm() is documented to need it. Hold the mmap sem as required. Second, _fast accepts an 'int write' while _longterm uses 'unsigned int gup_flags', so the expression '!!(prot & IOMMU_WRITE)' is only working by luck as FOLL_WRITE is currently == 0x1. Use the expected FOLL_WRITE constant instead. Fixes: 94db151dc8 ("vfio: disable filesystem-dax page pinning") Cc: <stable@vger.kernel.org> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Acked-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-07-11 16:29:15 +02:00
..
mdev	vfio/mdev: Use a module softdep for vfio_mdev	2017-02-08 13:13:25 -07:00
pci	vfio/pci: Virtualize Maximum Read Request Size	2018-04-24 09:36:34 +02:00
platform	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
Kconfig	vfio: Fix build break when SPAPR_TCE_IOMMU=n	2017-02-08 13:13:25 -07:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
vfio.c	vfio: Stall vfio_del_group_dev() for container group detach	2017-08-30 14:02:16 -06:00
vfio_iommu_spapr_tce.c	powerpc updates for 4.12 part 1.	2017-05-05 11:36:44 -07:00
vfio_iommu_type1.c	vfio: Use get_user_pages_longterm correctly	2018-07-11 16:29:15 +02:00
vfio_spapr_eeh.c	drivers/vfio: Support EEH error injection	2015-05-12 20:33:35 +10:00
virqfd.c	sched/wait: Rename wait_queue_t => wait_queue_entry_t	2017-06-20 12:18:27 +02:00