From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Bjorn Helgaas <bhelgaas@google.com>
Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>,
Will Deacon <will.deacon@arm.com>,
Liviu Dudau <liviu.dudau@arm.com>,
Marc Zyngier <marc.zyngier@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Jason Cooper <jason@lakedaemon.net>,
Thomas Gleixner <tglx@linutronix.de>,
Rob Herring <robh+dt@kernel.org>,
linux-arm <linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>
Subject: Re: [RFC 3/4] arm64: Do not call enable PCI resources when specify PCI_PROBE_ONLY
Date: Wed, 24 Jun 2015 08:34:28 +1000 [thread overview]
Message-ID: <1435098868.3996.11.camel@kernel.crashing.org> (raw)
In-Reply-To: <CAErSpo6SngcV6_Ew0DOjW+xTw8y6j3UmwdPw1x-tk_AB=mapaQ@mail.gmail.com>
On Mon, 2014-09-29 at 12:17 -0600, Bjorn Helgaas wrote:
> This seems like more than necessary, but I don't know all the history.
> In particular, I don't know why PCI_PROBE_ONLY should make a
> difference to things like claiming resources.
It shouldn't ... we created that option on ppc originally to avoid
allocation/reallocation of resources. If they are bad, leave them bad,
but it was never a question of disabling all these other things.
(Ok, the MRSS/MPS is debatable, but why not plumb the parent pointers
and why not claim ? That doesn't make sense to me).
Cheers,
Ben.
WARNING: multiple messages have this Message-ID (diff)
From: benh@kernel.crashing.org (Benjamin Herrenschmidt)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC 3/4] arm64: Do not call enable PCI resources when specify PCI_PROBE_ONLY
Date: Wed, 24 Jun 2015 08:34:28 +1000 [thread overview]
Message-ID: <1435098868.3996.11.camel@kernel.crashing.org> (raw)
In-Reply-To: <CAErSpo6SngcV6_Ew0DOjW+xTw8y6j3UmwdPw1x-tk_AB=mapaQ@mail.gmail.com>
On Mon, 2014-09-29 at 12:17 -0600, Bjorn Helgaas wrote:
> This seems like more than necessary, but I don't know all the history.
> In particular, I don't know why PCI_PROBE_ONLY should make a
> difference to things like claiming resources.
It shouldn't ... we created that option on ppc originally to avoid
allocation/reallocation of resources. If they are bad, leave them bad,
but it was never a question of disabling all these other things.
(Ok, the MRSS/MPS is debatable, but why not plumb the parent pointers
and why not claim ? That doesn't make sense to me).
Cheers,
Ben.
next prev parent reply other threads:[~2015-06-23 22:52 UTC|newest]
Thread overview: 122+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-28 20:53 [RFC 0/4] Add PCI/MSI(x) support for AMD Seattle Platform suravee.suthikulpanit
2014-09-28 20:53 ` suravee.suthikulpanit
2014-09-28 20:53 ` suravee.suthikulpanit at amd.com
2014-09-28 20:53 ` [RFC 1/4] arm64: amd-seattle: Adding device tree for AMD Seattle platform suravee.suthikulpanit
2014-09-28 20:53 ` suravee.suthikulpanit-5C7GfCeVMHo
2014-09-28 20:53 ` suravee.suthikulpanit at amd.com
2014-10-10 13:45 ` Mark Rutland
2014-10-10 13:45 ` Mark Rutland
2014-10-24 12:08 ` Suravee Suthikulpanit
2014-10-24 12:08 ` Suravee Suthikulpanit
2014-09-28 20:53 ` [RFC 2/4] PCI: generic: Add support for ARM64 and MSI(x) suravee.suthikulpanit
2014-09-28 20:53 ` suravee.suthikulpanit
2014-09-28 20:53 ` suravee.suthikulpanit at amd.com
2014-09-29 14:36 ` Arnd Bergmann
2014-09-29 14:36 ` Arnd Bergmann
2014-09-30 12:03 ` Lorenzo Pieralisi
2014-09-30 12:03 ` Lorenzo Pieralisi
2014-09-30 12:31 ` Arnd Bergmann
2014-09-30 12:31 ` Arnd Bergmann
2014-09-30 16:12 ` Lorenzo Pieralisi
2014-09-30 16:12 ` Lorenzo Pieralisi
2014-09-30 16:42 ` Liviu Dudau
2014-09-30 16:42 ` Liviu Dudau
2014-09-30 17:35 ` Lorenzo Pieralisi
2014-09-30 17:35 ` Lorenzo Pieralisi
2014-09-30 17:48 ` Liviu Dudau
2014-09-30 17:48 ` Liviu Dudau
2014-09-30 18:54 ` Arnd Bergmann
2014-09-30 18:54 ` Arnd Bergmann
2014-09-30 20:01 ` Arnd Bergmann
2014-09-30 20:01 ` Arnd Bergmann
2014-10-01 8:46 ` Liviu Dudau
2014-10-01 8:46 ` Liviu Dudau
2014-10-01 9:38 ` Arnd Bergmann
2014-10-01 9:38 ` Arnd Bergmann
2014-10-07 12:06 ` Lorenzo Pieralisi
2014-10-07 12:06 ` Lorenzo Pieralisi
2014-10-07 13:52 ` Arnd Bergmann
2014-10-07 13:52 ` Arnd Bergmann
2014-10-07 14:47 ` Lorenzo Pieralisi
2014-10-07 14:47 ` Lorenzo Pieralisi
2014-10-07 21:39 ` Arnd Bergmann
2014-10-07 21:39 ` Arnd Bergmann
2014-10-08 10:19 ` Lorenzo Pieralisi
2014-10-08 10:19 ` Lorenzo Pieralisi
2014-10-08 14:47 ` Arnd Bergmann
2014-10-08 14:47 ` Arnd Bergmann
2014-10-09 9:04 ` Lorenzo Pieralisi
2014-10-09 9:04 ` Lorenzo Pieralisi
2014-10-09 10:51 ` Arnd Bergmann
2014-10-09 10:51 ` Arnd Bergmann
2014-10-10 13:58 ` Lorenzo Pieralisi
2014-10-10 13:58 ` Lorenzo Pieralisi
2014-10-10 18:31 ` Arnd Bergmann
2014-10-10 18:31 ` Arnd Bergmann
2014-10-13 9:36 ` Lorenzo Pieralisi
2014-10-13 9:36 ` Lorenzo Pieralisi
2014-10-22 15:59 ` Lorenzo Pieralisi
2014-10-22 15:59 ` Lorenzo Pieralisi
2014-10-22 16:49 ` Bjorn Helgaas
2014-10-22 16:49 ` Bjorn Helgaas
2014-10-22 20:52 ` Arnd Bergmann
2014-10-22 20:52 ` Arnd Bergmann
2014-10-23 9:13 ` Liviu Dudau
2014-10-23 9:13 ` Liviu Dudau
2014-10-23 11:27 ` Lorenzo Pieralisi
2014-10-23 11:27 ` Lorenzo Pieralisi
2014-10-23 16:52 ` Jason Gunthorpe
2014-10-23 16:52 ` Jason Gunthorpe
2014-10-27 16:10 ` Lorenzo Pieralisi
2014-10-27 16:10 ` Lorenzo Pieralisi
2014-10-23 13:33 ` Arnd Bergmann
2014-10-23 13:33 ` Arnd Bergmann
2014-10-24 10:04 ` Liviu Dudau
2014-10-24 10:04 ` Liviu Dudau
2014-11-05 23:40 ` Bjorn Helgaas
2014-11-05 23:40 ` Bjorn Helgaas
2014-11-06 0:06 ` Arnd Bergmann
2014-11-06 0:06 ` Arnd Bergmann
2014-11-06 0:06 ` Arnd Bergmann
2014-12-29 19:32 ` Suravee Suthikulpanit
2014-12-29 19:32 ` Suravee Suthikulpanit
2015-01-02 11:55 ` Lorenzo Pieralisi
2015-01-02 11:55 ` Lorenzo Pieralisi
2015-01-02 11:55 ` Lorenzo Pieralisi
2015-01-02 18:18 ` Suravee Suthikulanit
2015-01-02 18:18 ` Suravee Suthikulanit
2015-01-02 21:09 ` Arnd Bergmann
2015-01-02 21:09 ` Arnd Bergmann
2015-01-05 14:48 ` Lorenzo Pieralisi
2015-01-05 14:48 ` Lorenzo Pieralisi
2014-11-05 23:39 ` Bjorn Helgaas
2014-11-05 23:39 ` Bjorn Helgaas
2014-11-06 0:05 ` Arnd Bergmann
2014-11-06 0:05 ` Arnd Bergmann
2014-11-06 9:52 ` Lorenzo Pieralisi
2014-11-06 9:52 ` Lorenzo Pieralisi
2014-09-29 19:19 ` Sunil Kovvuri
2014-09-29 19:19 ` Sunil Kovvuri
2014-09-28 20:53 ` [RFC 3/4] arm64: Do not call enable PCI resources when specify PCI_PROBE_ONLY suravee.suthikulpanit
2014-09-28 20:53 ` suravee.suthikulpanit
2014-09-28 20:53 ` suravee.suthikulpanit at amd.com
2014-09-29 14:38 ` Arnd Bergmann
2014-09-29 14:38 ` Arnd Bergmann
2014-09-29 18:17 ` Bjorn Helgaas
2014-09-29 18:17 ` Bjorn Helgaas
2015-06-23 22:34 ` Benjamin Herrenschmidt [this message]
2015-06-23 22:34 ` Benjamin Herrenschmidt
2015-06-23 23:05 ` Russell King - ARM Linux
2015-06-23 23:05 ` Russell King - ARM Linux
2015-06-23 22:32 ` Benjamin Herrenschmidt
2015-06-23 22:32 ` Benjamin Herrenschmidt
2014-09-28 20:53 ` [RFC 4/4] irqchip: gicv2m: Add supports for ARM GICv2m MSI(-X) suravee.suthikulpanit
2014-09-28 20:53 ` suravee.suthikulpanit-5C7GfCeVMHo
2014-09-28 20:53 ` suravee.suthikulpanit at amd.com
2014-09-28 21:35 ` Suravee Suthikulpanit
2014-09-28 21:35 ` Suravee Suthikulpanit
2014-09-28 21:35 ` Suravee Suthikulpanit
2014-09-29 14:23 ` Thomas Gleixner
2014-09-29 14:23 ` Thomas Gleixner
2014-09-29 14:42 ` Arnd Bergmann
2014-09-29 14:42 ` Arnd Bergmann
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