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linux/drivers/vfio
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Joao Martins 47e93d2f28 iommufd/iova_bitmap: Consider page offset for the pages to be pinned 
[ Upstream commit 4bbcbc6ea2 ]

For small bitmaps that aren't PAGE_SIZE aligned *and* that are less than
512 pages in bitmap length, use an extra page to be able to cover the
entire range e.g. [1M..3G] which would be iterated more efficiently in a
single iteration, rather than two.

Fixes: b058ea3ab5 ("vfio/iova_bitmap: refactor iova_bitmap_set() to better handle page boundaries")
Link: https://lore.kernel.org/r/20240202133415.23819-10-joao.m.martins@oracle.com
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Tested-by: Avihai Horon <avihaih@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2024-03-01 13:26:35 +01:00
..
fsl-mc vfio/fsl-mc: Use the new device life cycle helpers 2022-09-21 14:15:11 -06:00
mdev vfio/mdev: Fix a null-ptr-deref bug for mdev_unregister_parent() 2023-10-06 14:56:45 +02:00
pci vfio/pci: Check the device set open count on reset 2022-11-10 12:03:36 -07:00
platform vfio: platform: Do not pass return buffer to ACPI _RST method 2022-12-31 13:32:38 +01:00
container.c vfio: Change vfio_group->group_rwsem to a mutex 2022-10-04 12:06:58 -06:00
iova_bitmap.c iommufd/iova_bitmap: Consider page offset for the pages to be pinned 2024-03-01 13:26:35 +01:00
Kconfig vfio: Introduce the DMA logging feature support 2022-09-08 12:59:00 -06:00
Makefile vfio: Move container code into drivers/vfio/container.c 2022-09-22 15:46:06 -06:00
vfio.h vfio: Make the group FD disassociate from the iommu_group 2022-10-07 08:10:52 -06:00
vfio_iommu_spapr_tce.c vfio/spapr_tce: Fix the comment 2022-07-22 16:24:47 -06:00
vfio_iommu_type1.c vfio/type1: fix cap_migration information leak 2023-09-13 09:42:47 +02:00
vfio_main.c vfio: Export the device set open count 2022-11-10 12:03:36 -07:00
vfio_spapr_eeh.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
virqfd.c vfio/virqfd: Drain events from eventfd in virqfd_wakeup() 2020-11-15 09:49:10 -05:00