Re: [PATCH 2/2] armv8: aarch32: Add SMP support for 32-bit Linux kernel

From	Mark Rutland <mark.rutland@arm.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH 2/2] armv8: aarch32: Add SMP support for 32-bit Linux kernel
Date	2016-09-23 14:30 +0200
Message-ID	<skxM6-3BX-17@gated-at.bofh.it> (permalink)
References	<skxj4-38t-33@gated-at.bofh.it> <skxj4-38t-35@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Fri, Sep 23, 2016 at 10:19:06AM +0800, Alison Wang wrote:
> The patch adds SMP support for running 32-bit Linux kernel for
> Layerscape platforms. Spin-table method is used for SMP support.

So far, spin-table has not been defined for 32-bit, and the code below,
while mostly a copy of the 64-bit code, is somewhat different.

If you want a common enable method, I would strongly advise that you use
PSCI, which is well-defined for both 32-bit and 64-bit. There are a
number of problems with spin-table, and I would not recommend extending
it to 32-bit ARM.

Thanks,
Mark.

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Re: [PATCH 2/2] armv8: aarch32: Add SMP support for 32-bit Linux  kernel Mark Rutland <mark.rutland@arm.com> - 2016-09-23 14:30 +0200

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