| commit | 330091175005731845c82ae2b44ac72a93902a25 | |
| author | Chris Wright <chrisw@sous-sol.org> | |
| Wed, 13 Jul 2011 17:14:33 +0000 (13 10:14 -0700) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Mon, 8 Aug 2011 17:23:12 +0000 (8 10:23 -0700) | ||
| tree | 3e46b0589ac469f6bd5ca1008a9c1d08ab69731c | treesnapshot (tar.gz zip) |
| parent | 1b7fbaab701bfcc77916896bf64af9624c0b62d4 | commitdiff |
PCI: ARI is a PCIe v2 feature
commit 864d296cf948aef0fa32b81407541572583f7572 upstream.
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.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
commit 864d296cf948aef0fa32b81407541572583f7572 upstream.
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.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| drivers/pci/pci.c | diffblobblamehistory |