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Re: [PATCH 25/25] arm64:ilp32: add ARM64_ILP32 to Kconfig

From Catalin Marinas <catalin.marinas@arm.com>
Newsgroups linux.kernel
Subject Re: [PATCH 25/25] arm64:ilp32: add ARM64_ILP32 to Kconfig
Date 2016-04-29 18:10 +0200
Message-ID <rtj9o-xI-9@gated-at.bofh.it> (permalink)
References <rkHkD-2hR-23@gated-at.bofh.it> <rkHuk-2lA-61@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Wed, Apr 06, 2016 at 01:08:47AM +0300, Yury Norov wrote:
> +config ARM64_ILP32
> +	bool "Kernel support for ILP32"
> +	select COMPAT_WRAPPER
> +	help
> +	  This option enables support for AArch64 ILP32 user space.  ILP32
> +	  is an ABI where long and pointers are 32bits but it uses the AARCH64
> +	  instruction set.

Is there any penalty for AArch32 tasks when selecting COMPAT_WRAPPER?

-- 
Catalin

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Re: [PATCH 25/25] arm64:ilp32: add ARM64_ILP32 to Kconfig Catalin Marinas <catalin.marinas@arm.com> - 2016-04-29 18:10 +0200
  Re: [PATCH 25/25] arm64:ilp32: add ARM64_ILP32 to Kconfig Catalin Marinas <catalin.marinas@arm.com> - 2016-04-29 18:20 +0200

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