From: Matthew Garrett <mjg59@srcf.ucam.org>
To: "Zheng, Lv" <lv.zheng@intel.com>
Cc: Al Stone <al.stone@linaro.org>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Olof Johansson <olof@lixom.net>,
Rob Herring <robherring2@gmail.com>,
"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
Linaro Patches <patches@linaro.org>,
"linaro-kernel@lists.linaro.org" <linaro-kernel@lists.linaro.org>,
"linaro-acpi@lists.linaro.org" <linaro-acpi@lists.linaro.org>
Subject: Re: [PATCH v2 4/6] ACPI: ARM: exclude DMI calls
Date: Mon, 25 Nov 2013 15:30:16 +0000 [thread overview]
Message-ID: <20131125153016.GA3243@srcf.ucam.org> (raw)
In-Reply-To: <1AE640813FDE7649BE1B193DEA596E880248D1A8@SHSMSX101.ccr.corp.intel.com>
On Mon, Nov 25, 2013 at 05:10:46AM +0000, Zheng, Lv wrote:
> > From: linux-acpi-owner@vger.kernel.org [mailto:linux-acpi-owner@vger.kernel.org] On Behalf Of Matthew Garrett
> > Ugh. Really? People have been fairly careful about making sure that the
> > x86 SoC code is selected correctly at runtime, and losing that because
> > ACPICA is broken would be a shame. I think this is something that needs
> > to support runtime switching even if there's also support for building
> > kernels that only implement the reduced hardware profile.
>
> If my reading is correct, do you mean x86 SoCs should have already tested the code.
I don't know if anyone has deployed x86 SoCs with reduced hardware yet,
but it seems like something that might happen.
> So if ARM need ACPI_REDUCED_HARDWARE to be defined, the <include/acpi/platform/aclinux.h> should have lines like:
> #ifdef CONFIG_ARCH_IS_ACPI_REDUCED_HARDWARE
> #define ACPI_REDUCED_HARDWARE TRUE
> #endif
> And ARCH_IS_ACPI_REDUCED_HARDWARE should only be selected by CONFIG_ARM.
Is ACPI_REDUCED_HARDWARE supposed to indicate support for the reduced
hardware profile, or that the platform *only* implements the reduced
hardware profile?
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2013-11-25 15:30 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-22 0:41 [PATCH v2 0/6] Hardware Reduced Mode cleanup for ACPI al.stone
[not found] ` < 528F9C65.7010302@linaro.org>
[not found] ` < CAOesGMgFBRjO++JSP0ddKKQ2RfG8V4fb97Hd+Oqwixi_Tt7Qwg@mail.gmail.com>
2013-11-22 0:41 ` [PATCH v2 1/6] ACPI: introduce CONFIG_ACPI_REDUCED_HARDWARE to enable this ACPI mode al.stone
2013-11-22 0:41 ` [PATCH v2 2/6] ACPI: bus master reload not supported in reduced HW mode al.stone
2013-11-22 3:06 ` Hanjun Guo
2013-11-27 22:35 ` Al Stone
2013-11-22 0:41 ` [PATCH v2 3/6] ACPI: HW reduced mode does not allow use of the FADT sci_interrupt field al.stone
2013-11-22 0:41 ` [PATCH v2 4/6] ACPI: ARM: exclude DMI calls al.stone
2013-11-22 13:25 ` Rob Herring
2013-11-22 18:03 ` Al Stone
2013-11-22 18:53 ` Olof Johansson
2013-11-22 23:15 ` Rafael J. Wysocki
2013-11-23 0:05 ` Al Stone
2013-11-23 16:38 ` Matthew Garrett
2013-11-25 5:10 ` Zheng, Lv
2013-11-25 15:30 ` Matthew Garrett [this message]
2013-11-25 17:43 ` Al Stone
2013-11-25 17:45 ` Matthew Garrett
2013-11-25 18:01 ` Al Stone
2013-12-04 1:30 ` Al Stone
2013-12-04 1:34 ` Matthew Garrett
2013-12-10 12:45 ` Grant Likely
2013-11-22 0:41 ` [PATCH v2 5/6] ACPI: do not reserve memory regions for some FADT entries in HW reduced mode al.stone
2013-11-22 0:41 ` [PATCH v2 6/6] ACPI: in HW reduced mode, using FADT PM information is not allowed al.stone
2013-11-22 23:18 ` [PATCH v2 0/6] Hardware Reduced Mode cleanup for ACPI Rafael J. Wysocki
2013-11-22 23:33 ` Al Stone
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