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cbb325e77f
linux-next/drivers/vfio
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Alex Williamson cbb325e77f vfio/pci: Restore zero affected bus reset devices warning 
Yi notes relative to commit f6944d4a0b ("vfio/pci: Collect hot-reset
devices to local buffer") that we previously tested the resulting
device count with a WARN_ON, which was removed when we switched to
the in-loop user copy in commit b56b7aabcf ("vfio/pci: Copy hot-reset
device info to userspace in the devices loop").  Finding no devices in
the bus/slot would be an unexpected condition, so let's restore the
warning and trigger a -ERANGE error here as success with no devices
would be an unexpected result to userspace as well.

Suggested-by: Yi Liu <yi.l.liu@intel.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Yi Liu <yi.l.liu@intel.com>
Link: https://lore.kernel.org/r/20240516174831.2257970-1-alex.williamson@redhat.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2024-05-17 08:00:52 -06:00
..
cdx vfio/cdx: add interrupt support 2024-04-23 14:31:38 -06:00
fsl-mc vfio/fsl-mc: Block calling interrupt handler without trigger 2024-03-11 13:08:52 -06:00
mdev vfio: mdev: make mdev_bus_type const 2024-02-22 12:19:33 -07:00
pci vfio/pci: Restore zero affected bus reset devices warning 2024-05-17 08:00:52 -06:00
platform vfio/platform: Create persistent IRQ handlers 2024-03-11 13:08:52 -06:00
container.c VFIO updates for v6.3-rc1 2023-02-25 11:52:57 -08:00
debugfs.c vfio/migration: Add debugfs to live migration driver 2023-12-04 14:29:08 -07:00
device_cdev.c vfio: Add VFIO_DEVICE_[AT|DE]TACH_IOMMUFD_PT 2023-07-25 10:20:37 -06:00
group.c vfio: Move the IOMMU_CAP_CACHE_COHERENCY check in __vfio_register_dev() 2023-07-25 10:20:41 -06:00
iommufd.c vfio: Support IO page table replacement 2023-07-28 13:31:24 -03:00
Kconfig vfio/migration: Add debugfs to live migration driver 2023-12-04 14:29:08 -07:00
Makefile vfio/migration: Add debugfs to live migration driver 2023-12-04 14:29:08 -07:00
vfio_iommu_spapr_tce.c powerpc/iommu: Add iommu_ops to report capabilities and allow blocking domains 2023-03-15 00:51:46 +11:00
vfio_iommu_type1.c Revert "vfio/type1: Unpin zero pages" 2024-03-04 16:11:07 -07:00
vfio_main.c vfio: replace CONFIG_HAVE_KVM with IS_ENABLED(CONFIG_KVM) 2024-02-08 08:45:35 -05:00
vfio.h vfio: replace CONFIG_HAVE_KVM with IS_ENABLED(CONFIG_KVM) 2024-02-08 08:45:35 -05:00
virqfd.c vfio: Introduce interface to flush virqfd inject workqueue 2024-03-11 13:08:52 -06:00