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acrn-kernel/drivers/pci
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Bjorn Helgaas 1654635bed Revert "PCI: Mark NVIDIA T4 GPUs to avoid bus reset" 
commit 5260bd6d36 upstream.

This reverts commit d5af729dc2.

d5af729dc2 ("PCI: Mark NVIDIA T4 GPUs to avoid bus reset") avoided
Secondary Bus Reset on the T4 because the reset seemed to not work when the
T4 was directly attached to a Root Port.

But NVIDIA thinks the issue is probably related to some issue with the Root
Port, not with the T4.  The T4 provides neither PM nor FLR reset, so
masking bus reset compromises this device for assignment scenarios.

Revert d5af729dc2 as requested by Wu Zongyong.  This will leave SBR
broken in the specific configuration Wu tested, as it was in v6.5, so Wu
will debug that further.

Link: https://lore.kernel.org/r/ZPqMCDWvITlOLHgJ@wuzongyong-alibaba
Link: https://lore.kernel.org/r/20230908201104.GA305023@bhelgaas
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2023-09-13 09:43:02 +02:00
..
controller PCI: hv: Fix a crash in hv_pci_restore_msi_msg() during hibernation 2023-09-13 09:43:02 +02:00
endpoint
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hotplug PCI: pciehp: Use RMW accessors for changing LNKCTL 2023-09-13 09:42:46 +02:00
msi
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pcie PCI/ASPM: Use RMW accessors for changing LNKCTL 2023-09-13 09:42:46 +02:00
switch
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Kconfig
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Makefile
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access.c PCI: Add locking to RMW PCI Express Capability Register accessors 2023-09-13 09:42:46 +02:00
ats.c
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bus.c
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doe.c PCI/DOE: Fix destroy_work_on_stack() race 2023-09-13 09:42:45 +02:00
ecam.c
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host-bridge.c
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iov.c
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irq.c
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mmap.c
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of.c
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p2pdma.c
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pci-acpi.c
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pci-bridge-emul.c
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pci-bridge-emul.h
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pci-driver.c
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pci-label.c
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pci-mid.c
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pci-pf-stub.c
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pci-stub.c
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pci-sysfs.c PCI: Allow drivers to request exclusive config regions 2023-09-13 09:42:46 +02:00
pci.c PCI/PM: Only read PCI_PM_CTRL register when available 2023-09-13 09:43:02 +02:00
pci.h
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probe.c PCI: Free released resource after coalescing 2023-09-13 09:43:01 +02:00
proc.c
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quirks.c Revert "PCI: Mark NVIDIA T4 GPUs to avoid bus reset" 2023-09-13 09:43:02 +02:00
remove.c
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rom.c
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search.c
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setup-bus.c
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setup-irq.c
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setup-res.c
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slot.c
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syscall.c
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vc.c
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vgaarb.c
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vpd.c
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xen-pcifront.c
…