linux-kernel - Re: d63e2e1f3df breaks sparc/T5-8

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Date:	Thu, 26 Mar 2015 13:43:43 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	David Ahern <david.ahern@...cle.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>
Cc:	"sparclinux@...r.kernel.org" <sparclinux@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: d63e2e1f3df breaks sparc/T5-8

[+bjorn, pci list]

On Thu, Mar 26, 2015 at 9:51 AM, David Ahern <david.ahern@...cle.com> wrote:
> Hi:
>
> Boot of an 8-socket T5 sparc system fails on top of tree. git bisect points
> to this commit:
>
> commit  904bf6bd150bdafb42ddbb3257ea8
> Author: Yinghai Lu <yinghai@...nel.org>
> Date:   Thu Jan 15 16:21:51 2015 -0600
>
> sparc/PCI: Clip bridge windows to fit in upstream windows
>
> Every PCI-PCI bridge window should fit inside an upstream bridge window
> because orphaned address space is unreachable from the primary side of the
> upstream bridge.  If we inherit invalid bridge windows that overlap an
> upstream window from firmware, clip them to fit and update the bridge
> accordingly.
>
>
> Sure enough if I revert it on top of tree the system boots fine.

Can you send out boot log with "debug ignore_loglevel"?

Thanks

Yinghai
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