Alexey Kardashevskiy d00a150404 vfio/spapr/nvlink2: Skip unpinning pages on error exit ... [ Upstream commit 338b4e10f9 ] The nvlink2 subdriver for IBM Witherspoon machines preregisters GPU memory in the IOMMI API so KVM TCE code can map this memory for DMA as well. This is done by mm_iommu_newdev() called from vfio_pci_nvgpu_regops::mmap. In an unlikely event of failure the data->mem remains NULL and since mm_iommu_put() (which unregisters the region and unpins memory if that was regular memory) does not expect mem=NULL, it should not be called. This adds a check to only call mm_iommu_put() for a valid data->mem. Fixes: 7f92891778 ("vfio_pci: Add NVIDIA GV100GL [Tesla V100 SXM2] subdriver") Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-02-24 08:36:43 +01:00
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mdev	VFIO updates for v5.3-rc1	2019-07-17 11:23:13 -07:00
pci	vfio/spapr/nvlink2: Skip unpinning pages on error exit	2020-02-24 08:36:43 +01:00
platform	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201	2019-05-30 11:29:52 -07:00
Kconfig	docs: driver-api: add a series of orphaned documents	2019-07-15 11:03:02 -03:00
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	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
vfio_iommu_spapr_tce.c	mm: introduce page_shift()	2019-09-24 15:54:08 -07:00
vfio_iommu_type1.c	vfio/type1: Initialize resv_msi_base	2019-10-15 14:07:01 -06:00
vfio_spapr_eeh.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
virqfd.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00