From: Russell King - ARM Linux admin <linux@armlinux.org.uk>
To: Nicolas Pitre <nico@fluxnic.net>
Cc: linux-efi@vger.kernel.org, Marc Zyngier <maz@kernel.org>,
Linus Walleij <linus.walleij@linaro.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Peter Smith <Peter.Smith@arm.com>, Stefan Agner <stefan@agner.ch>,
Will Deacon <will@kernel.org>, Ard Biesheuvel <ardb@kernel.org>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 03/12] ARM: module: add support for place relative relocations
Date: Mon, 14 Sep 2020 17:11:53 +0100 [thread overview]
Message-ID: <20200914161153.GM1551@shell.armlinux.org.uk> (raw)
In-Reply-To: <nycvar.YSQ.7.78.906.2009140927490.4095746@knanqh.ubzr>
On Mon, Sep 14, 2020 at 09:35:41AM -0400, Nicolas Pitre wrote:
> On Mon, 14 Sep 2020, Ard Biesheuvel wrote:
>
> > When using the new adr_l/ldr_l/str_l macros to refer to external symbols
> > from modules, the linker may emit place relative ELF relocations that
> > need to be fixed up by the module loader. So add support for these.
>
> Just wondering if that capability requirement should be added to the
> module signature somehow...?
>
> Maybe not. The MODULE_ARCH_VERMAGIC definition only contains things that
> are configurable for a given build.
It doesn't need to be. If a module contains a relocation we don't know
how to handle, it will fail to load.
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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next prev parent reply other threads:[~2020-09-14 16:16 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-14 9:56 [PATCH 00/12] ARM: use adr_l/ldr_l macros for PC-relative references Ard Biesheuvel
2020-09-14 9:56 ` [PATCH 01/12] ARM: assembler: introduce adr_l, ldr_l and str_l macros Ard Biesheuvel
2020-09-15 7:35 ` Ard Biesheuvel
2020-09-15 17:51 ` Nick Desaulniers
2020-09-14 9:56 ` [PATCH 02/12] ARM: efistub: replace adrl pseudo-op with adr_l macro invocation Ard Biesheuvel
2020-09-14 9:56 ` [PATCH 03/12] ARM: module: add support for place relative relocations Ard Biesheuvel
2020-09-14 13:35 ` Nicolas Pitre
2020-09-14 16:11 ` Russell King - ARM Linux admin [this message]
2020-09-14 9:56 ` [PATCH 04/12] ARM: head-common.S: use PC-relative insn sequence for __proc_info Ard Biesheuvel
2020-09-14 9:56 ` [PATCH 05/12] ARM: head-common.S: use PC-relative insn sequence for idmap creation Ard Biesheuvel
2020-09-14 9:57 ` [PATCH 06/12] ARM: head.S: use PC-relative insn sequence for secondary_data Ard Biesheuvel
2020-09-14 9:57 ` [PATCH 07/12] ARM: kernel: use relative references for UP/SMP alternatives Ard Biesheuvel
2020-09-14 9:57 ` [PATCH 08/12] ARM: head: use PC-relative insn sequence for __smp_alt Ard Biesheuvel
2020-09-14 9:57 ` [PATCH 09/12] ARM: sleep.S: use PC-relative insn sequence for sleep_save_sp/mpidr_hash Ard Biesheuvel
2020-09-14 9:57 ` [PATCH 10/12] ARM: head.S: use PC-relative insn sequences for __fixup_pv_table Ard Biesheuvel
2020-09-14 9:57 ` [PATCH 11/12] ARM: head.S: use PC relative insn sequence to calculate PHYS_OFFSET Ard Biesheuvel
2020-09-14 9:57 ` [PATCH 12/12] ARM: kvm: replace open coded VA->PA calculations with adr_l call Ard Biesheuvel
2020-09-14 14:06 ` [PATCH 00/12] ARM: use adr_l/ldr_l macros for PC-relative references Nicolas Pitre
2020-09-15 19:32 ` Nick Desaulniers
2020-09-15 21:29 ` Ard Biesheuvel
2020-09-15 23:31 ` Nick Desaulniers
2020-09-16 5:54 ` Ard Biesheuvel
2020-09-16 19:53 ` Nick Desaulniers
2020-09-16 20:45 ` Ard Biesheuvel
2020-09-16 21:25 ` Nick Desaulniers
2020-09-17 0:16 ` Nick Desaulniers
2020-09-17 5:19 ` Mike Rapoport
2020-09-17 6:01 ` Ard Biesheuvel
2020-09-18 20:03 ` Nick Desaulniers
2020-09-18 20:44 ` Ard Biesheuvel
2020-09-18 21:06 ` Nick Desaulniers
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