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From:   Andreas Schwab <schwab@linux-m68k.org>
To:     Palmer Dabbelt <palmer@dabbelt.com>
Cc:     alex@ghiti.fr, Paul Walmsley <paul.walmsley@sifive.com>,
        aou@eecs.berkeley.edu, linux-riscv@lists.infradead.org,
        linux-kernel@vger.kernel.org, kernel-team@android.com,
        Palmer Dabbelt <palmerdabbelt@google.com>
Subject: Re: [PATCH] RISC-V: Make CONFIG_RELOCATABLE user selectable
References: <20211026212847.43108-1-palmer@dabbelt.com>
Date:   Wed, 27 Oct 2021 10:00:31 +0200
In-Reply-To: <20211026212847.43108-1-palmer@dabbelt.com> (Palmer Dabbelt's
        message of "Tue, 26 Oct 2021 14:28:47 -0700")
Message-ID: <87mtmuaodc.fsf@igel.home>
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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@linux-m68k.org
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"And now for something completely different."