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From: Jon Masters <jcm@redhat.com>
To: Catalin Marinas <catalin.marinas@arm.com>
Cc: "hanjun.guo@linaro.org" <hanjun.guo@linaro.org>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Mark Rutland <Mark.Rutland@arm.com>,
	Olof Johansson <olof@lixom.net>,
	"grant.likely@linaro.org" <grant.likely@linaro.org>,
	Will Deacon <Will.Deacon@arm.com>,
	"graeme.gregory@linaro.org" <graeme.gregory@linaro.org>,
	Arnd Bergmann <arnd@arndb.de>,
	Sudeep Holla <Sudeep.Holla@arm.com>,
	Jason Cooper <jason@lakedaemon.net>,
	Marc Zyngier <Marc.Zyngier@arm.com>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Daniel Lezcano <daniel.lezcano@linaro.org>,
	Mark Brown <broonie@kernel.org>, Rob Herring <robh@kernel.org>,
	Robert Richter <rric@kernel.org>, Lv Zheng <lv.zheng@intel.com>,
	Robert Moore <robert.moore@intel.com>,
	Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>,
	Liviu Dudau <Liviu.Dudau@arm.com>,
	Randy Dunlap <rdunlap@infradead.org>,
	Charles Garcia-Tobin <Charles.Garcia-Tobin@arm.com>,
	"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
	"linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linaro-acpi@lists.linaro.org" <linaro-acpi@lists.linaro.org>,
	Tomasz Nowicki <tomasz.nowicki@linaro.org>
Subject: Re: [PATCH v4 11/18] ARM64 / ACPI: Parse MADT for SMP initialization
Date: Mon, 15 Sep 2014 19:19:49 -0400	[thread overview]
Message-ID: <54177415.6070306@redhat.com> (raw)
In-Reply-To: <20140915145630.GE5415@arm.com>

On 09/15/2014 10:56 AM, Catalin Marinas wrote:
> On Fri, Sep 12, 2014 at 08:47:00PM +0100, Jon Masters wrote:
>> On 09/12/2014 10:00 AM, Hanjun Guo wrote:
>>> MADT contains the information for MPIDR which is essential for
>>> SMP initialization, parse the GIC cpu interface structures to
>>> get the MPIDR value and map it to cpu_logical_map(), and add
>>> enabled cpu with valid MPIDR into cpu_possible_map.
>>>
>>> ACPI 5.1 only has two explicit methods to boot up SMP, PSCI and
>>> Parking protocol, but the Parking protocol is only specified for
>>> ARMv7 now, so make PSCI as the only way for the SMP boot protocol
>>> before some updates for the ACPI spec or the Parking protocol spec.
>>
>> As an aside, initial support for the Parking Protocol is working on test
>> systems within Red Hat at this time.
> 
> BTW, have the details of the parking protocol been updated for ARMv8
> yet?

There's an interim specification for which initial (test, in
development) patches are currently in the fedorahosted development
kernel. Mark is planning to followup on that once he's had chance to
polish and clean things up. But the parking protocol is not required for
initial ACPI enablement (we really want everyone to be doing PSCI
anyway, it's only a small subset that will ever do parking protocol).

Jon.



  reply	other threads:[~2014-09-15 23:21 UTC|newest]

Thread overview: 89+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-12 13:59 [PATCH v4 00/18] Introduce ACPI for ARM64 based on ACPI 5.1 Hanjun Guo
2014-09-12 13:59 ` [PATCH v4 01/18] ARM64: Move the init of cpu_logical_map(0) before unflatten_device_tree() Hanjun Guo
2014-09-12 19:34   ` Jon Masters
2014-09-15  6:16   ` Olof Johansson
2014-09-17 16:48     ` Mark Rutland
2014-09-12 14:00 ` [PATCH v4 02/18] ACPI / table: Add new function to get table entries Hanjun Guo
2014-09-15 16:48   ` Grant Likely
2014-09-12 14:00 ` [PATCH v4 03/18] ACPI / table: Count matched and successfully parsed entries without specifying max entries Hanjun Guo
2014-09-15 16:48   ` Grant Likely
2014-09-12 14:00 ` [PATCH v4 04/18] ARM64 / ACPI: Get RSDP and ACPI boot-time tables Hanjun Guo
2014-09-12 14:00 ` [PATCH v4 05/18] ARM64 / ACPI: Introduce sleep-arm.c Hanjun Guo
2014-09-12 14:51   ` Catalin Marinas
2014-09-12 15:18     ` Graeme Gregory
2014-09-12 15:49       ` Catalin Marinas
2014-09-12 16:32         ` Graeme Gregory
2014-09-17  1:31         ` Matthew Garrett
2014-09-12 19:43   ` Jon Masters
2014-09-12 20:03     ` Graeme Gregory
2014-09-12 21:10       ` Jon Masters
2014-09-12 14:00 ` [PATCH v4 06/18] ARM64 / ACPI: Introduce early_param for "acpi" Hanjun Guo
2014-09-15  6:28   ` Olof Johansson
2014-09-15 14:51     ` Catalin Marinas
2014-09-15 16:09       ` Olof Johansson
2014-09-15 16:31       ` Jon Masters
2014-09-15 22:55     ` Hanjun Guo
2014-09-12 14:00 ` [PATCH v4 07/18] ARM64 / ACPI: If we chose to boot from acpi then disable FDT Hanjun Guo
2014-09-12 14:00 ` [PATCH v4 08/18] ARM64 / ACPI: Make PCI optional for ACPI on ARM64 Hanjun Guo
2014-09-12 14:00 ` [PATCH v4 09/18] ARM64 / ACPI: Parse FADT table to get PSCI flags for PSCI init Hanjun Guo
2014-09-15  6:38   ` Olof Johansson
2014-09-15 14:54     ` Catalin Marinas
2014-09-15 23:24       ` Jon Masters
2014-09-15 23:34     ` Hanjun Guo
2014-09-12 14:00 ` [PATCH v4 10/18] ACPI / table: Print GIC information when MADT is parsed Hanjun Guo
2014-09-15  6:40   ` Olof Johansson
2014-09-15 14:11     ` Jon Masters
2014-09-15 17:52     ` Grant Likely
2014-09-15 18:01       ` Olof Johansson
2014-09-15 21:55         ` Jon Masters
2014-09-12 14:00 ` [PATCH v4 11/18] ARM64 / ACPI: Parse MADT for SMP initialization Hanjun Guo
2014-09-12 19:47   ` Jon Masters
2014-09-15 14:56     ` Catalin Marinas
2014-09-15 23:19       ` Jon Masters [this message]
2014-09-15  7:00   ` Olof Johansson
2014-09-16  0:01     ` Hanjun Guo
2014-09-12 14:00 ` [PATCH v4 12/18] ACPI / processor: Make it possible to get CPU hardware ID via GICC Hanjun Guo
2014-09-15  7:05   ` Olof Johansson
2014-09-16  0:11     ` Hanjun Guo
2014-09-12 14:00 ` [PATCH v4 13/18] ARM64 / ACPI: Introduce ACPI_IRQ_MODEL_GIC and register device's gsi Hanjun Guo
2014-09-12 14:00 ` [PATCH v4 14/18] ARM64 / ACPI: Add GICv2 specific ACPI boot support Hanjun Guo
2014-09-12 19:48   ` Jon Masters
2014-09-15 15:01   ` Catalin Marinas
2014-09-15 16:16     ` Jon Masters
2014-09-15 16:42       ` Catalin Marinas
2014-09-17  7:40         ` Tomasz Nowicki
2014-09-17 15:14           ` Catalin Marinas
2014-09-18  2:25             ` Arnd Bergmann
2014-09-18 16:00               ` Catalin Marinas
2014-09-12 14:00 ` [PATCH v4 15/18] ARM64 / ACPI: Parse GTDT to initialize arch timer Hanjun Guo
2014-09-15  7:13   ` Olof Johansson
2014-09-12 14:00 ` [PATCH v4 16/18] ARM64 / ACPI: Select ACPI_REDUCED_HARDWARE_ONLY if ACPI is enabled on ARM64 Hanjun Guo
2014-09-12 14:00 ` [PATCH v4 17/18] ARM64 / ACPI: Enable ARM64 in Kconfig Hanjun Guo
2014-09-12 14:00 ` [PATCH v4 18/18] Documentation: ACPI for ARM64 Hanjun Guo
2014-09-15  7:33   ` Olof Johansson
2014-09-17  1:44   ` Matthew Garrett
2014-09-17  1:57     ` Matthew Garrett
2014-09-17  8:58     ` Jon Masters
2014-09-17 17:02       ` Mark Brown
2014-09-17 16:05     ` Graeme Gregory
2014-09-17 23:22       ` Arnd Bergmann
2014-09-17 23:40         ` Graeme Gregory
2014-09-18 15:54           ` Catalin Marinas
2014-09-18 23:20           ` Rafael J. Wysocki
2014-09-18 23:59             ` Jon Masters
2014-09-17 19:37     ` Rafael J. Wysocki
2014-09-17 19:22       ` Matthew Garrett
2014-09-17 19:29         ` Jon Masters
2014-09-17 20:11         ` Rafael J. Wysocki
2014-09-17 19:59           ` Matthew Garrett
2014-09-17 23:06           ` Hanjun Guo
2014-09-22 19:48   ` Pavel Machek
2014-09-22 20:31     ` Matthew Garrett
2014-09-22 22:46       ` Rafael J. Wysocki
2014-09-22 22:28         ` Matthew Garrett
2014-09-22 22:34           ` Hanjun Guo
2014-09-22 22:38             ` Matthew Garrett
2014-09-22 23:22             ` Rafael J. Wysocki
2014-09-22 22:55         ` Al Stone
2014-09-22 23:07           ` Matthew Garrett
2014-09-22 22:40     ` Al Stone

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