linux-kernel - [PATCH v3 0/2] Fix a pair of setup bus bugs

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Date:   Fri, 31 May 2019 11:12:14 -0600
From:   Logan Gunthorpe <logang@...tatee.com>
To:     linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
        Bjorn Helgaas <bhelgaas@...gle.com>
Cc:     Kit Chow <kchow@...aio.com>, Yinghai Lu <yinghai@...nel.org>,
        Logan Gunthorpe <logang@...tatee.com>
Subject: [PATCH v3 0/2] Fix a pair of setup bus bugs

Hey,

This is another resend to get some more attention. Nothing has changed
since v2.

For the first patch, there's a lot more information 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/de3e34d8-2ac3-e89b-30f1-a18826ce5d7d@deltatee.com/T/#m96ba95de4678146ed46b602e8bfd6ac08a588fa2

--

Changes in v3:

* Rebased onto v5.2-rc2 (no changes)

Changes in v2:

* Rebased onto v5.1-rc6 (no changes)
* Reworked the commit message in the first commit to try and explain
  it better.

--

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