linux-kernel - Re: Running out of IO space because of innocuous-looking DSDT change

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Message-ID: <CAG4TOxOSnP6OBw-=Rnj6=ihBu2Ndue1u_Ww3nM+deRKZpo_p1A@mail.gmail.com>
Date:	Mon, 19 Oct 2015 10:21:37 -0700
From:	Roland Dreier <roland@...nel.org>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Running out of IO space because of innocuous-looking DSDT change

On Mon, Oct 19, 2015 at 10:00 AM, Yinghai Lu <yinghai@...nel.org> wrote:
> I would suggest to expand standard_io_resources[] to include all
> possible conflict that we should avoid, like the io port for serial and cf8/cf9.
>
> Then we could just set PCIBIOS_MIN_IO to 0 for x86.

That would work on my system, which is a well-behaved standard server.
But I thought the issue was weird vendor-specific stuff (Sony
laptops?) where there are undocumented nonstandard IO resources that
also aren't reserved in ACPI?

 - R.
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