linux-kernel - Re: [PATCH v8 1/3] riscv: Introduce CONFIG

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Message-ID: <4adb27d2-325d-3ce0-23b1-ec69a973b4bf@ghiti.fr>
Date:   Tue, 9 May 2023 21:55:53 +0200
From:   Alexandre Ghiti <alex@...ti.fr>
To:     Andreas Schwab <schwab@...ux-m68k.org>,
        Alexandre Ghiti <alexghiti@...osinc.com>
Cc:     Michael Ellerman <mpe@...erman.id.au>,
        Nicholas Piggin <npiggin@...il.com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org
Subject: Re: [PATCH v8 1/3] riscv: Introduce CONFIG_RELOCATABLE

On 5/9/23 21:07, Andreas Schwab wrote:
> That does not work with UEFI booting:
>
> Loading Linux 6.4.0-rc1-1.g668187d-default ...
> Loading initial ramdisk ...
> Unhandled exception: Instruction access fault
> EPC: ffffffff80016d56 RA: 000000008020334e TVAL: 0000007f80016d56
> EPC: ffffffff002d1d56 RA: 00000000004be34e reloc adjusted
> Unhandled exception: Load access fault
> EPC: 00000000fff462d4 RA: 00000000fff462d0 TVAL: ffffffff80016d56
> EPC: 00000000802012d4 RA: 00000000802012d0 reloc adjusted
>
> Code: c825 8e0d 05b3 40b4 d0ef 0636 7493 ffe4 (d783 0004)
> UEFI image [0x00000000fe65e000:0x00000000fe6e3fff] '/efi\boot\bootriscv64.efi'
> UEFI image [0x00000000daa82000:0x00000000dcc2afff]
>

I need more details please, as I have a UEFI bootflow and it works great 
(KASLR is based on a relocatable kernel and works fine in UEFI too).

Thanks,

Alex