linux-kernel - Re: [tip:x86/platform] x86/PCI/mmcfg: Switch to ECAM config mode if possible

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Message-ID: <alpine.DEB.2.20.1706302042450.2171@nanos>
Date:   Fri, 30 Jun 2017 20:46:39 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
cc:     Andi Kleen <ak@...ux.intel.com>, Yinghai Lu <yinghai@...nel.org>,
        Stephane Eranian <eranian@...gle.com>,
        "H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Borislav Petkov <bp@...en8.de>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Bjorn Helgaas <helgaas@...nel.org>,
        Matthew Wilcox <willy@...ux.intel.com>,
        Ivan Kokshaysky <ink@...assic.park.msu.ru>,
        "linux-tip-commits@...r.kernel.org" 
        <linux-tip-commits@...r.kernel.org>
Subject: Re: [tip:x86/platform] x86/PCI/mmcfg: Switch to ECAM config mode if
 possible

On Fri, 30 Jun 2017, Linus Torvalds wrote:
> So use the "enhanced" one for stuff above the 256-byte limit. Not for
> basic probing.

The probing itself uses type1 unconditionally. It just switches over when
mmcfg is the default and no other quirk has been applied.

Nevertheless I zap that commit in question. The rest of the series is still
valid and does not affect that. The main goal of distangling the stuff from
the global PCI lock and avoiding pointless nested locking is still reached.

Thanks,

	tglx