Re: [PATCH] sh: remove unneeded constructor.

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On 08/05/2018 11:32 AM, Rich Felker wrote:
> On Sun, Aug 05, 2018 at 10:54:56AM -0500, Rob Landley wrote:
>> On 08/04/2018 05:51 AM, Matthew Wilcox wrote:
>>> On Sat, Aug 04, 2018 at 12:47:08PM +0200, Geert Uytterhoeven wrote:
>>>> You do want to readd the __GFP_ZERO flag to the second user of PGALLOC_GFP,
>>>> don't you?
>>>
>>> I missed that!  Probably only relevant for SH-64.  But yes ... probably better
>>> to make this explicit then:
>>
>> As far as I know sh5/sh-64 never shipped, it was just some prototype hardware
>> that didn't go to production?
> 
> I'm not sure about the details, but GCC has removed support and it's
> effectively dead. I would be happy to merge patches removing the
> existing SH-64 stuff in the kernel too. I'm not sure if generality to
> support LP64 should be left in the arch/sh tree for future or if the
> eventual 64-bit j-core should just be done as a separate arch tree; I
> suspect the latter might be cleaner.

LP64 is mostly just "long fits in a pointer", which is true on 32 bit too. What
extra "lp64" support are you referring to?

It seems like the only architecture with 32 and 64 bit variants that _doesn't_
have them together is arm? (x86 does, powerpc does, mips does...)

Rob



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