linux-kernel - Re: [PATCH 9/8] CPU: Introduce ARCH_HAS_CPU

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Date:	Wed, 21 Dec 2011 15:50:36 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Kay Sievers <kay.sievers@...y.org>
CC:	Greg KH <greg@...ah.com>, Thomas Renninger <trenn@...e.de>,
	Andi Kleen <andi@...stfloor.org>, linux-kernel@...r.kernel.org,
	Andi Kleen <ak@...ux.intel.com>, axboe@...nel.dk,
	herbert@...dor.hengli.com.au, ying.huang@...el.com, lenb@...nel.org
Subject: Re: [PATCH 9/8] CPU: Introduce ARCH_HAS_CPU_AUTOPROBE and X86 parts

On 12/21/2011 03:46 PM, Kay Sievers wrote:
> On Thu, Dec 22, 2011 at 00:36, H. Peter Anvin <hpa@...or.com> wrote:
>> On 12/21/2011 03:29 PM, Greg KH wrote:
> 
>>>> Greg, Andi's upcoming CPU modaliases are temporarily hooked into the
>>>> 'cpuid' class devices to make them work with userspace, which isn't
>>>> possible with the weird sysdev stuff.
>>>>
>>>> We don't want to depend on the 'cpuid' class, but hook into the real
>>>> 'cpu' subsystem. This switches them over after we have the
>>>> sysdev-cpu-conversion stuff merged.
>>>
>>> Ok, but what does this mean now for my tree as I've taken your patches?
>>
>> If I understand Kay right it means that once this tree and the patches from
>> Kay are both upstream we can apply the cleanup patch.
>>
>> Kay, is that correct?
> 
> Correct.
> 
> Andi added the modalias stuff to the 'cpuid' class because that has
> the proper userspace hookup. But we want to have the modalias at the
> real 'cpu' devices.
> 
> Thomas' patch (the above) moves them over, now that we can do that
> with the weird sysdev stuff gone.
> 

But we need Greg's stuff upstream first, right?  So the sequence becomes
a) merge Greg's tree b) merge this tree c) merge the cleanup.

	-hpa

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