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From: Tomasz Figa <t.figa@samsung.com>
To: Thomas Abraham <ta.omasab@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	Sachin Kamat <sachin.kamat@linaro.org>,
	Kukjin Kim <kgene.kim@samsung.com>,
	"linux-samsung-soc@vger.kernel.org"
	<linux-samsung-soc@vger.kernel.org>,
	Thomas Abraham <thomas.abraham@linaro.org>,
	Thomas Abraham <thomas.ab@samsung.com>
Subject: Re: [PATCH 5/6] ARM: EXYNOS: Enable multi-platform build support
Date: Wed, 16 Apr 2014 16:58:43 +0200	[thread overview]
Message-ID: <534E9AA3.10409@samsung.com> (raw)
In-Reply-To: <CAJuA9ajXa+mejdUvWATHjmmin8hoRhX0wueg5g8rDbJR4AWZ7A@mail.gmail.com>

Hi Thomas,

On 16.04.2014 16:55, Thomas Abraham wrote:
> On Wed, Apr 16, 2014 at 8:18 PM, Tomasz Figa <t.figa@samsung.com> wrote:
>> On 16.04.2014 16:31, Arnd Bergmann wrote:
>>>
>>> On Wednesday 16 April 2014 15:51:29 Tomasz Figa wrote:
>>>>
>>>> On 15.04.2014 11:28, Sachin Kamat wrote:
>>>>>
>>>>> From: Arnd Bergmann <arnd@arndb.de>
>>>>>
>>>>> This makes it possible to enable the exynos platform as part of a
>>>>> multiplatform kernel, in addition to keeping the single-platform
>>>>> Exynos support.
>>>>> sparsemem is currently not supported in multiplatform.
>>>>
>>>>
>>>> Is this still true as of today?
>>>>
>>>> Otherwise looks fine.
>>>
>>>
>>> sparsemem is still not supported in multiplatform, but after I looked
>>> at it in more detail, I came to the conclusion that there is no
>>> reason why it couldn't be. It just needs testing so we are confident
>>> that it doesn't break other platforms, and we need to find good
>>> platform-independent values for MAX_PHYSMEM_BITS and SECTION_SIZE_BITS
>>> to put into asm/memory.h, since we can't have them set in mach/memory.h
>>> for multiplatform.
>>>
>>> Looking at my patch again now, I would actually prefer to kill off
>>> the single-platform support for exynos right away. I don't see
>>> any reason to keep it now, and it complicates the test matrix.
>>
>>
>> That would be the best option, assuming that it wouldn't introduce feature
>> regressions. Unfortunately there is still ongoing work on cpufreq driver to
>> make it multiplatform-aware, so dropping single platform support right now
>> would introduce at least this one regression.
>>
>> Thomas, is there any progress on new version of Exynos cpufreq rework
>> series?
>
> Hi Tomasz,
>
> Yes, I am preparing the fourth version of the cpufreq patches and will
> post it next week. Mostly, the changes will be addressing your review
> comments.

OK. Looking forward to it. Thanks for an update on this.

Best regards,
Tomasz

WARNING: multiple messages have this Message-ID (diff)
From: t.figa@samsung.com (Tomasz Figa)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 5/6] ARM: EXYNOS: Enable multi-platform build support
Date: Wed, 16 Apr 2014 16:58:43 +0200	[thread overview]
Message-ID: <534E9AA3.10409@samsung.com> (raw)
In-Reply-To: <CAJuA9ajXa+mejdUvWATHjmmin8hoRhX0wueg5g8rDbJR4AWZ7A@mail.gmail.com>

Hi Thomas,

On 16.04.2014 16:55, Thomas Abraham wrote:
> On Wed, Apr 16, 2014 at 8:18 PM, Tomasz Figa <t.figa@samsung.com> wrote:
>> On 16.04.2014 16:31, Arnd Bergmann wrote:
>>>
>>> On Wednesday 16 April 2014 15:51:29 Tomasz Figa wrote:
>>>>
>>>> On 15.04.2014 11:28, Sachin Kamat wrote:
>>>>>
>>>>> From: Arnd Bergmann <arnd@arndb.de>
>>>>>
>>>>> This makes it possible to enable the exynos platform as part of a
>>>>> multiplatform kernel, in addition to keeping the single-platform
>>>>> Exynos support.
>>>>> sparsemem is currently not supported in multiplatform.
>>>>
>>>>
>>>> Is this still true as of today?
>>>>
>>>> Otherwise looks fine.
>>>
>>>
>>> sparsemem is still not supported in multiplatform, but after I looked
>>> at it in more detail, I came to the conclusion that there is no
>>> reason why it couldn't be. It just needs testing so we are confident
>>> that it doesn't break other platforms, and we need to find good
>>> platform-independent values for MAX_PHYSMEM_BITS and SECTION_SIZE_BITS
>>> to put into asm/memory.h, since we can't have them set in mach/memory.h
>>> for multiplatform.
>>>
>>> Looking at my patch again now, I would actually prefer to kill off
>>> the single-platform support for exynos right away. I don't see
>>> any reason to keep it now, and it complicates the test matrix.
>>
>>
>> That would be the best option, assuming that it wouldn't introduce feature
>> regressions. Unfortunately there is still ongoing work on cpufreq driver to
>> make it multiplatform-aware, so dropping single platform support right now
>> would introduce at least this one regression.
>>
>> Thomas, is there any progress on new version of Exynos cpufreq rework
>> series?
>
> Hi Tomasz,
>
> Yes, I am preparing the fourth version of the cpufreq patches and will
> post it next week. Mostly, the changes will be addressing your review
> comments.

OK. Looking forward to it. Thanks for an update on this.

Best regards,
Tomasz

  reply	other threads:[~2014-04-16 14:58 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-04-15  9:28 [PATCH v2 0/6] Further cleanup and enable multiplat build Sachin Kamat
2014-04-15  9:28 ` Sachin Kamat
2014-04-15  9:28 ` [PATCH 1/6] ARM: EXYNOS: Remove duplicate lines in Makefile Sachin Kamat
2014-04-15  9:28   ` Sachin Kamat
2014-04-15  9:28 ` [PATCH 2/6] ARM: EXYNOS: Remove exynos_subsys registration Sachin Kamat
2014-04-15  9:28   ` Sachin Kamat
2014-04-15  9:28 ` [PATCH 3/6] ARM: EXYNOS: Migrate Exynos specific macros from plat to mach Sachin Kamat
2014-04-15  9:28   ` Sachin Kamat
2014-04-15  9:28 ` [PATCH 4/6] ARM: EXYNOS: Remove unnecessary inclusion of cpu.h Sachin Kamat
2014-04-15  9:28   ` Sachin Kamat
2014-04-15  9:28 ` [PATCH 5/6] ARM: EXYNOS: Enable multi-platform build support Sachin Kamat
2014-04-15  9:28   ` Sachin Kamat
2014-04-16 13:51   ` Tomasz Figa
2014-04-16 13:51     ` Tomasz Figa
2014-04-16 14:31     ` Arnd Bergmann
2014-04-16 14:31       ` Arnd Bergmann
2014-04-16 14:48       ` Tomasz Figa
2014-04-16 14:48         ` Tomasz Figa
2014-04-16 14:55         ` Thomas Abraham
2014-04-16 14:55           ` Thomas Abraham
2014-04-16 14:58           ` Tomasz Figa [this message]
2014-04-16 14:58             ` Tomasz Figa
2014-04-16 18:14             ` Arnd Bergmann
2014-04-16 18:14               ` Arnd Bergmann
2014-04-16 20:50               ` Mark Brown
2014-04-16 20:50                 ` Mark Brown
2014-04-16 21:00                 ` Arnd Bergmann
2014-04-16 21:00                   ` Arnd Bergmann
2014-04-22  3:06   ` Olof Johansson
2014-04-22  3:06     ` Olof Johansson
2014-04-22 19:56     ` Arnd Bergmann
2014-04-22 19:56       ` Arnd Bergmann
2014-05-13  4:37       ` Kukjin Kim
2014-05-13  4:37         ` Kukjin Kim
2014-05-13  9:15         ` Arnd Bergmann
2014-05-13  9:15           ` Arnd Bergmann
2014-05-13 18:01           ` Olof Johansson
2014-05-13 18:01             ` Olof Johansson
2014-05-14  4:33             ` Kukjin Kim
2014-05-14  4:33               ` Kukjin Kim
2014-04-15  9:28 ` [PATCH 6/6] ARM: multi_v7_defconfig: Enable Exynos platform Sachin Kamat
2014-04-15  9:28   ` Sachin Kamat
2014-04-16 13:51 ` [PATCH v2 0/6] Further cleanup and enable multiplat build Tomasz Figa
2014-04-16 13:51   ` Tomasz Figa
2014-05-04 15:35   ` Sachin Kamat
2014-05-04 15:35     ` Sachin Kamat
2014-05-12 22:30     ` Kukjin Kim
2014-05-12 22:30       ` Kukjin Kim
  -- strict thread matches above, loose matches on Subject: below --
2014-04-10  8:24 [PATCH " Sachin Kamat
2014-04-10  8:24 ` [PATCH 5/6] ARM: EXYNOS: Enable multi-platform build support Sachin Kamat
2014-04-10  8:24   ` Sachin Kamat

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