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38565c93c8
linux/drivers/vfio/pci
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Alex Williamson 38565c93c8 vfio/pci: Implement ioeventfd thread handler for contended memory lock 
The ioeventfd is called under spinlock with interrupts disabled,
therefore if the memory lock is contended defer code that might
sleep to a thread context.

Fixes: bc93b9ae01 ("vfio-pci: Avoid recursive read-lock usage")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=209253#c1
Reported-by: Ian Pilcher <arequipeno@gmail.com>
Tested-by: Ian Pilcher <arequipeno@gmail.com>
Tested-by: Justin Gatzen <justin.gatzen@gmail.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2020-11-03 11:07:40 -07:00
..
Kconfig vfio-pci/zdev: Add zPCI capabilities to VFIO_DEVICE_GET_INFO 2020-10-12 11:37:59 -06:00
Makefile vfio-pci/zdev: Add zPCI capabilities to VFIO_DEVICE_GET_INFO 2020-10-12 11:37:59 -06:00
trace.h vfio/pci: Cleanup license mess 2019-01-22 11:06:05 -07:00
vfio_pci_config.c Merge branches 'v5.10/vfio/bardirty', 'v5.10/vfio/dma_avail', 'v5.10/vfio/misc', 'v5.10/vfio/no-cmd-mem' and 'v5.10/vfio/yan_zhao_fixes' into v5.10/vfio/next 2020-09-22 10:56:51 -06:00
vfio_pci_igd.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
vfio_pci_intrs.c vfio/pci: Clear token on bypass registration failure 2020-10-19 07:13:55 -06:00
vfio_pci_nvlink2.c drivers/powerpc: Replace _ALIGN_UP() by ALIGN() 2020-05-11 23:15:15 +10:00
vfio_pci_private.h vfio-pci/zdev: Add zPCI capabilities to VFIO_DEVICE_GET_INFO 2020-10-12 11:37:59 -06:00
vfio_pci_rdwr.c vfio/pci: Implement ioeventfd thread handler for contended memory lock 2020-11-03 11:07:40 -07:00
vfio_pci_zdev.c vfio-pci/zdev: Add zPCI capabilities to VFIO_DEVICE_GET_INFO 2020-10-12 11:37:59 -06:00
vfio_pci.c VFIO updates for v5.10-rc1 2020-10-22 13:00:44 -07:00