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| author | Chris Wright <chrisw@sous-sol.org> | 2011-07-13 10:14:33 -0700 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2011-07-22 08:41:51 -0700 |
| commit | 864d296cf948aef0fa32b81407541572583f7572 (patch) | |
| tree | 67d2cee99f6a5f591bcd6a19bb5333f6c4234598 /arch | |
| parent | a8c7ef3187a266d201af887fd48afbef3598825a (diff) | |
| download | linux-864d296cf948aef0fa32b81407541572583f7572.tar.gz linux-864d296cf948aef0fa32b81407541572583f7572.tar.bz2 linux-864d296cf948aef0fa32b81407541572583f7572.zip | |
PCI: ARI is a PCIe v2 feature
The function pci_enable_ari() may mistakenly set the downstream port
of a v1 PCIe switch in ARI Forwarding mode. This is a PCIe v2 feature,
and with an SR-IOV device on that switch port believing the switch above
is ARI capable it may attempt to use functions 8-255, translating into
invalid (non-zero) device numbers for that bus. This has been seen
to cause Completion Timeouts and general misbehaviour including hangs
and panics.
Cc: stable@kernel.org
Acked-by: Don Dutile <ddutile@redhat.com>
Tested-by: Don Dutile <ddutile@redhat.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions