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From: Florian Fainelli <f.fainelli@gmail.com>
To: Russell King - ARM Linux admin <linux@armlinux.org.uk>
Cc: Doug Berger <opendmb@gmail.com>, Arnd Bergmann <arnd@arndb.de>,
	sboyd@kernel.org, Kevin Cernekee <cernekee@gmail.com>,
	Mike Rapoport <rppt@linux.ibm.com>,
	Gregory Fong <gregory.0xf0@gmail.com>,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 1/2] ARM: Remove redundant ARCH_SPARSEMEM_DEFAULT setting
Date: Thu, 7 May 2020 12:38:39 -0700	[thread overview]
Message-ID: <f252f8db-3047-ef5e-9cde-222e4282ca9d@gmail.com> (raw)
In-Reply-To: <20200507185030.GT1551@shell.armlinux.org.uk>



On 5/7/2020 11:50 AM, Russell King - ARM Linux admin wrote:
> On Thu, May 07, 2020 at 10:25:16AM -0700, Florian Fainelli wrote:
>>
>>
>> On 5/7/2020 3:30 AM, Russell King - ARM Linux admin wrote:
>>> On Wed, May 06, 2020 at 04:50:08PM -0700, Florian Fainelli wrote:
>>>> From: Kevin Cernekee <cernekee@gmail.com>
>>>>
>>>> If ARCH_SPARSEMEM_ENABLE=y and ARCH_{FLATMEM,DISCONTIGMEM}_ENABLE=n,
>>>> then the logic in mm/Kconfig already makes CONFIG_SPARSEMEM the only
>>>> choice.  This is true for all of the existing ARM users of
>>>> ARCH_SPARSEMEM_ENABLE.
>>>>
>>>> Forcing ARCH_SPARSEMEM_DEFAULT=y if ARCH_SPARSEMEM_ENABLE=y prevents
>>>> us from ever defaulting to FLATMEM, so we should remove this setting.
>>>
>>> No explanation why that is desirable.
>>
>> This was explained in the original submission out of which only the
>> first patch landed upstream:
>>
>> https://lkml.org/lkml/2015/6/4/756
> 
> Sorry, I don't see where.  The message you link to is for patch 1.
> I'd say that the reason only the first patch landed is because that's
> all I was happy with.

I misunderstood you as to why the whole patch series, but now understand
you meant specifically this patch, let me try to dig up some of the
history of this and see if I can provide a justification, else, it
should be dropped.
-- 
Florian

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  reply	other threads:[~2020-05-07 19:38 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-06 23:50 [PATCH 0/2] Allow either FLATMEM or SPARSEMEM on the multiplatform build Florian Fainelli
2020-05-06 23:50 ` [PATCH 1/2] ARM: Remove redundant ARCH_SPARSEMEM_DEFAULT setting Florian Fainelli
2020-05-07  7:27   ` Mike Rapoport
2020-05-07 10:30   ` Russell King - ARM Linux admin
2020-05-07 17:25     ` Florian Fainelli
2020-05-07 18:50       ` Russell King - ARM Linux admin
2020-05-07 19:38         ` Florian Fainelli [this message]
2020-05-07 20:08     ` [PATCH] arm: use SPARSMEM_STATIC when SPARSEMEM is enabled (Was: [PATCH 1/2] ARM: Remove redundant ARCH_SPARSEMEM_DEFAULT setting) Mike Rapoport
2020-05-08 20:20       ` Florian Fainelli
2020-05-07 20:29     ` [PATCH 1/2] ARM: Remove redundant ARCH_SPARSEMEM_DEFAULT setting Mike Rapoport
2020-05-07 20:47       ` Florian Fainelli
2020-05-08 21:41         ` Mike Rapoport
2020-05-08 21:45           ` Florian Fainelli
2020-05-06 23:50 ` [PATCH 2/2] ARM: Allow either FLATMEM or SPARSEMEM on the multiplatform build Florian Fainelli
2020-05-07  7:27   ` Mike Rapoport
2020-05-07 20:11     ` Florian Fainelli
2020-05-18 15:58       ` Florian Fainelli
2020-05-18 19:45         ` Mike Rapoport
2020-05-19  7:59           ` Arnd Bergmann
2020-05-19 14:43             ` Mike Rapoport
2020-05-19 15:04               ` Russell King - ARM Linux admin
2020-05-19 15:27                 ` Mike Rapoport
2020-05-19 15:32                   ` Arnd Bergmann
2020-05-19 16:54                     ` Russell King - ARM Linux admin
2020-05-19 17:59                       ` Mike Rapoport
2020-05-19 20:42                       ` Arnd Bergmann
2020-05-21  2:45                         ` Florian Fainelli
2020-05-21  7:47                           ` Arnd Bergmann
2020-05-07  8:14 ` [PATCH 0/2] " Russell King - ARM Linux admin
2020-05-07 10:09   ` Mike Rapoport
2020-05-21  8:18 [PATCH 0/2] ARM: " Mike Rapoport
2020-05-21  8:18 ` [PATCH 1/2] ARM: Remove redundant ARCH_SPARSEMEM_DEFAULT setting Mike Rapoport

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