[v2,0/2] Fix a pair of setup bus bugs.

Message

Logan Gunthorpe April 22, 2019, 11:50 p.m. UTC

Hey,

This is largely a resend to get some more attention. I've attempted to clean
up and expand on the commit message of the first commit because the
bug is a bit of a nightmare to explain and follow. There's a lot more
information on the first commit in the original thread here[1] including
instructions on how to reproduce it in QEMU.

The second patch fixes an unrelated bug, with similar symptoms, in
the same code. It was a lot easier to debug and the reasoning should
hopefully be easier to follow, but I don't think it was reviewed much
during the first posting due to the nightmare in the first patch.

Thanks,

Logan

[1] https://lore.kernel.org/lkml/[e-mail]/T/#m96ba95de4678146ed46b602e8bfd6ac08a588fa2

Logan Gunthorpe (2):
  PCI: Prevent 64-bit resources from being counted in 32-bit bridge
    region
  PCI: Fix disabling of bridge BARs when assigning bus resources

 drivers/pci/setup-bus.c | 24 ++++++++++++++----------
 1 file changed, 14 insertions(+), 10 deletions(-)

--
2.20.1