linux-kernel - Re: [PATCH] RISC-V: Make CONFIG

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Message-ID: <87mtmuaodc.fsf@igel.home>
Date:   Wed, 27 Oct 2021 10:00:31 +0200
From:   Andreas Schwab <schwab@...ux-m68k.org>
To:     Palmer Dabbelt <palmer@...belt.com>
Cc:     alex@...ti.fr, Paul Walmsley <paul.walmsley@...ive.com>,
        aou@...s.berkeley.edu, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org, kernel-team@...roid.com,
        Palmer Dabbelt <palmerdabbelt@...gle.com>
Subject: Re: [PATCH] RISC-V: Make CONFIG_RELOCATABLE user selectable

On Okt 26 2021, Palmer Dabbelt wrote:

> +config RELOCATABLE
> +	bool "Build a relocatable kernel"
> +	depends on MMU && 64BIT && !XIP_KERNEL
> +	help
> +          This builds a kernel as a Position Independent Executable (PIE),
> +          which retains all relocation metadata required to relocate the
> +          kernel binary at runtime to a different virtual address than the
> +          address it was linked at.
> +          Since RISCV uses the RELA relocation format, this requires a
> +          relocation pass at runtime even if the kernel is loaded at the
> +          same address it was linked at.

When in doubt, do what?

Andreas.

-- 
Andreas Schwab, schwab@...ux-m68k.org
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