From: Ard Biesheuvel <ardb@kernel.org>
To: Linus Walleij <linus.walleij@linaro.org>
Cc: Russell King <rmk+kernel@armlinux.org.uk>,
linux-efi <linux-efi@vger.kernel.org>,
Nicolas Pitre <nico@fluxnic.net>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
Zhen Lei <thunder.leizhen@huawei.com>
Subject: Re: [PATCH v2 07/10] ARM: p2v: use relative references in patch site arrays
Date: Tue, 22 Sep 2020 11:50:53 +0200 [thread overview]
Message-ID: <CAMj1kXFpzMM0DJ_orZFt+OFhYkS8mpXJc8UL7s+V5kYhm56XPw@mail.gmail.com> (raw)
In-Reply-To: <CACRpkda9hF7ScfFF=Utk7yx-Rztpe4Kat3=51jM0cbDT9UoMog@mail.gmail.com>
On Tue, 22 Sep 2020 at 11:05, Linus Walleij <linus.walleij@linaro.org> wrote:
>
> On Mon, Sep 21, 2020 at 5:41 PM Ard Biesheuvel <ardb@kernel.org> wrote:
>
> > Free up a register in the p2v patching code by switching to relative
> > references, which don't require keeping the phys-to-virt displacement
> > live in a register.
> >
> > Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
>
> Neat!
> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
>
Thanks.
I just realized, though, that this patch requires the R_ARM_REL32 from
[0] as well, as there are a few rare occurrences of phys_to_virt() in
module code (musb_hdrc and vivid)
[0] https://lore.kernel.org/linux-arm-kernel/20200914095706.3985-4-ardb@kernel.org/
If nobody minds, I will just fold it into the PR, as it has been
reviewed and discussed already between Russel, Nico and myself.
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next prev parent reply other threads:[~2020-09-22 9:52 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-21 15:41 [PATCH v2 00/10] ARM: p2v: reduce min alignment to 2 MiB Ard Biesheuvel
2020-09-21 15:41 ` [PATCH v2 01/10] ARM: p2v: fix handling of LPAE translation in BE mode Ard Biesheuvel
2020-09-21 22:18 ` Russell King - ARM Linux admin
2020-09-22 6:54 ` Ard Biesheuvel
2020-09-22 8:23 ` Linus Walleij
2020-09-21 15:41 ` [PATCH v2 02/10] ARM: assembler: introduce adr_l, ldr_l and str_l macros Ard Biesheuvel
2020-09-22 8:32 ` Linus Walleij
2020-09-21 15:41 ` [PATCH v2 03/10] ARM: p2v: move patching code to separate assembler source file Ard Biesheuvel
2020-09-22 8:34 ` Linus Walleij
2020-09-21 15:41 ` [PATCH v2 04/10] ARM: p2v: factor out shared loop processing Ard Biesheuvel
2020-09-22 8:39 ` Linus Walleij
2020-09-22 9:58 ` Ard Biesheuvel
2020-09-21 15:41 ` [PATCH v2 05/10] ARM: p2v: factor out BE8 handling Ard Biesheuvel
2020-09-22 8:51 ` Linus Walleij
2020-09-22 10:00 ` Ard Biesheuvel
2020-09-21 15:41 ` [PATCH v2 06/10] ARM: p2v: drop redundant 'type' argument from __pv_stub Ard Biesheuvel
2020-09-22 9:02 ` Linus Walleij
2020-09-21 15:41 ` [PATCH v2 07/10] ARM: p2v: use relative references in patch site arrays Ard Biesheuvel
2020-09-22 9:04 ` Linus Walleij
2020-09-22 9:50 ` Ard Biesheuvel [this message]
2020-09-21 15:41 ` [PATCH v2 08/10] ARM: p2v: simplify __fixup_pv_table() Ard Biesheuvel
2020-09-22 9:06 ` Linus Walleij
2020-09-21 15:41 ` [PATCH v2 09/10] ARM: p2v: switch to MOVW for Thumb2 and ARM/LPAE Ard Biesheuvel
2020-09-21 18:29 ` Nicolas Pitre
2020-09-21 18:45 ` Ard Biesheuvel
2020-09-22 9:00 ` Linus Walleij
2020-09-21 15:41 ` [PATCH v2 10/10] ARM: p2v: reduce p2v alignment requirement to 2 MiB Ard Biesheuvel
2020-09-22 9:11 ` Linus Walleij
2020-09-22 10:23 ` Ard Biesheuvel
2020-09-22 15:12 ` Nicolas Pitre
2020-09-22 15:25 ` Ard Biesheuvel
2020-09-21 18:33 ` [PATCH v2 00/10] ARM: p2v: reduce min alignment " Nicolas Pitre
2020-09-22 9:12 ` Linus Walleij
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