Alexey Kardashevskiy f97b54c815 vfio/pci/nvlink2: Do not attempt NPU2 setup on POWER8NVL NPU ... commit d22f9a6c92 upstream. We execute certain NPU2 setup code (such as mapping an LPID to a device in NPU2) unconditionally if an Nvlink bridge is detected. However this cannot succeed on POWER8NVL machines as the init helpers return an error other than ENODEV which means the device is there is and setup failed so vfio_pci_enable() fails and pass through is not possible. This changes the two NPU2 related init helpers to return -ENODEV if there is no "memory-region" device tree property as this is the distinction between NPU and NPU2. Tested on - POWER9 pvr=004e1201, Ubuntu 19.04 host, Ubuntu 18.04 vm, NVIDIA GV100 10de:1db1 driver 418.39 - POWER8 pvr=004c0100, RHEL 7.6 host, Ubuntu 16.10 vm, NVIDIA P100 10de:15f9 driver 396.47 Fixes: 7f92891778 ("vfio_pci: Add NVIDIA GV100GL [Tesla V100 SXM2] subdriver") Cc: stable@vger.kernel.org # 5.0 Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-12-30 11:51:30 +01:00
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mdev	vfio/mdev: Fix reference count leak in add_mdev_supported_type	2020-06-24 17:50:36 +02:00
pci	vfio/pci/nvlink2: Do not attempt NPU2 setup on POWER8NVL NPU	2020-12-30 11:51:30 +01:00
platform	vfio: platform: fix reference leak in vfio_platform_open	2020-11-18 19:20:24 +01:00
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 iommu type1: Fix memory leak in vfio_iommu_type1_pin_pages	2020-10-29 09:57:56 +01:00
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