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    SubjectRe: [PATCH 4.5 026/238] PCI: Disable IO/MEM decoding for devices with non-compliant BARs
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    On Sun, 2016-04-10 at 11:33 -0700, Greg Kroah-Hartman wrote:
    > 4.5-stable review patch.  If anyone has any objections, please let me know.
    >
    > ------------------
    >
    > From: Bjorn Helgaas <bhelgaas@google.com>
    >
    > commit b84106b4e2290c081cdab521fa832596cdfea246 upstream.
    >
    > The PCI config header (first 64 bytes of each device's config space) is
    > defined by the PCI spec so generic software can identify the device and
    > manage its usage of I/O, memory, and IRQ resources.
    >
    > Some non-spec-compliant devices put registers other than BARs where the
    > BARs should be.  When the PCI core sizes these "BARs", the reads and writes
    > it does may have unwanted side effects, and the "BAR" may appear to
    > describe non-sensical address space.
    >
    > Add a flag bit to mark non-compliant devices so we don't touch their BARs.
    > Turn off IO/MEM decoding to prevent the devices from consuming address
    > space, since we can't read the BARs to find out what that address space
    > would be.
    [...]

    No objection, but patch 005/238 seems to depend on this so please
    reorder them so bisection will work.

    Ben.

    --
    Ben Hutchings
    This sentence contradicts itself - no actually it doesn't.[unhandled content-type:application/pgp-signature]
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