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| author | Sasha Neftin <sasha.neftin@intel.com> | 2017-04-04 00:02:50 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2017-04-04 00:02:50 +0300 |
| commit | f65fd1aa4f9881d5540192d11f7b8ed2fec936db (patch) | |
| tree | a6a61973770b1c570019cd9b6218983f3b020b65 /Documentation/PCI/pci-iov-howto.txt | |
| parent | c1ae3cfa0e89fa1a7ecc4c99031f5e9ae99d9201 (diff) | |
| download | linux-f65fd1aa4f9881d5540192d11f7b8ed2fec936db.tar.xz | |
PCI: Avoid FLR for Intel 82579 NICs
Per Intel Specification Update 335553-002 (see link below), some 82579
network adapters advertise a Function Level Reset (FLR) capability, but
they can hang when an FLR is triggered.
To reproduce the problem, attach the device to a VM, then detach and try to
attach again.
Add a quirk to prevent the use of FLR on these devices.
[bhelgaas: changelog, comments]
Link: http://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/82579lm-82579v-gigabit-network-connection-spec-update.pdf
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'Documentation/PCI/pci-iov-howto.txt')
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