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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2021-03-30 09:49:36 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-03-30 09:49:36 -0700 |
| commit | 17860ccabff533748c85ea32904abd6bae990099 (patch) | |
| tree | a693893cebd263144b6a35ebfd9c09dfbf152822 | |
| parent | mm: fix race by making init_zero_pfn() early_initcall (diff) | |
| parent | vfio/nvlink: Add missing SPAPR_TCE_IOMMU depends (diff) | |
| download | wireguard-linux-17860ccabff533748c85ea32904abd6bae990099.tar.xz wireguard-linux-17860ccabff533748c85ea32904abd6bae990099.zip | |
Merge tag 'vfio-v5.12-rc6' of git://github.com/awilliam/linux-vfio
Pull VFIO fixes from Alex Williamson:
- Fix pfnmap batch carryover (Daniel Jordan)
- Fix nvlink Kconfig dependency (Jason Gunthorpe)
* tag 'vfio-v5.12-rc6' of git://github.com/awilliam/linux-vfio:
vfio/nvlink: Add missing SPAPR_TCE_IOMMU depends
vfio/type1: Empty batch for pfnmap pages
Diffstat (limited to '')
| -rw-r--r-- | drivers/vfio/pci/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/vfio/vfio_iommu_type1.c | 6 |
2 files changed, 7 insertions, 1 deletions
diff --git a/drivers/vfio/pci/Kconfig b/drivers/vfio/pci/Kconfig index ac3c1dd3edef..4abddbebd4b2 100644 --- a/drivers/vfio/pci/Kconfig +++ b/drivers/vfio/pci/Kconfig @@ -42,6 +42,6 @@ config VFIO_PCI_IGD config VFIO_PCI_NVLINK2 def_bool y - depends on VFIO_PCI && PPC_POWERNV + depends on VFIO_PCI && PPC_POWERNV && SPAPR_TCE_IOMMU help VFIO PCI support for P9 Witherspoon machine with NVIDIA V100 GPUs diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index be444407664a..45cbfd4879a5 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -739,6 +739,12 @@ out: ret = vfio_lock_acct(dma, lock_acct, false); unpin_out: + if (batch->size == 1 && !batch->offset) { + /* May be a VM_PFNMAP pfn, which the batch can't remember. */ + put_pfn(pfn, dma->prot); + batch->size = 0; + } + if (ret < 0) { if (pinned && !rsvd) { for (pfn = *pfn_base ; pinned ; pfn++, pinned--) |