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SubjectRe: [PATCH v1 0/3] PCI: Avoid touching non-compliant BARs
On Fri, Feb 26, 2016 at 09:58:42AM -0600, Bjorn Helgaas wrote:
> Hi guys,
>
> Here's a proposal for dealing with these devices that have non-BAR
> registers where BARs are supposed to be. The idea is to:
>
> - have an early quirk mark these devices,
> - disable IO & MEM decoding so the devices don't consume address space
> we don't know about, and
> - skip BAR sizing (so the struct resources stay zeroed out)
>
> This is basically a modification of what Andi originally proposed. The
> difference here is that we never touch the BAR at all, and we don't have to
> add any struct resource flags, so we don't have to worry about changing any
> consumers of the struct resources.
>
> Let me know what you think.
>
> ---
>
> Bjorn Helgaas (3):
> PCI: Disable IO/MEM decoding for devices with non-compliant BARs
> x86/PCI: Mark Broadwell-EP Home Agent & PCU as having non-compliant BARs
> PCI: Mark Broadcom Vulcan bridges as having non-compliant BARs
>
>
> arch/x86/pci/fixup.c | 7 +++++++
> drivers/pci/probe.c | 14 ++++++++++++++
> drivers/pci/quirks.c | 14 ++++++++++++++
> include/linux/pci.h | 1 +
> 4 files changed, 36 insertions(+)

I applied the first two patches, with Andi's Tested-by, to
pci/resource for v4.6.

Per Jayachandran, the Broadcom patch turned out not to be necessary,
so I dropped that one.

Bjorn

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