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Date: Tue, 8 Dec 2015 15:56:16 +0800
Message-ID: <CAP4Qi3_UT6s+uA8zyvjXWY4mStkn6e6y5eG9cdHKdP49GEhoig@mail.gmail.com>
From: Jianbo Liu <jianbo.liu@linaro.org>
To: Thomas Monjalon <thomas.monjalon@6wind.com>
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Subject: Re: [dpdk-dev] [PATCH v2 2/3] eal/acl: enable acl for armv7-a
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On 8 December 2015 at 10:23, Thomas Monjalon <thomas.monjalon@6wind.com> wrote:
> 2015-12-08 09:50, Jianbo Liu:
>> On 8 December 2015 at 09:18, Thomas Monjalon <thomas.monjalon@6wind.com> wrote:
>> > 2015-12-03 23:02, Jianbo Liu:
>> >> -ifeq ($(CONFIG_RTE_ARCH_ARM64),y)
>> >> +ifneq ($(filter y,$(CONFIG_RTE_ARCH_ARM) $(CONFIG_RTE_ARCH_ARM64)),)
>> > [...]
>> >> +#ifdef RTE_ARCH_ARM
>> >> +/* NEON intrinsic vqtbl1q_u8() is not supported in ARMv7-A(AArch32) */
>> >
>> > I'm convinced there is a good reason why ARMv8 is also called ARCH_ARM64,
>> > and ARMv7 may be called AArch32 or ARCH_ARM. But I don't know why?
>> >
>> https://lkml.org/lkml/2012/7/15/133
>>
>> > Is ARCH_ARM32 or ARCH_ARMv7 too simple?
>> > Is it possible to have a 32-bit ARMv8?
>> Yes, ARMv8-R/M
>
> So what does mean CONFIG_RTE_ARCH_ARM?
> ARMv7? ARM32?
> Please consider a renaming.

I'd rather not renaming becase it can be both ARMv7 and AARCH32, which
are ISA compatibility.
If further differentiation is needed, CONFIG_RTE_ARCH_ARMv7 is added
in the config, just like Jan Viktorin did.