linux-kernel - Re: [PATCH -next] arm32/boot/compressed: Force hidden visibility for all symbol references

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Message-ID: <Z5OyivU-74fr4Vuz@shell.armlinux.org.uk>
Date: Fri, 24 Jan 2025 15:32:26 +0000
From: "Russell King (Oracle)" <linux@...linux.org.uk>
To: Ard Biesheuvel <ardb@...nel.org>
Cc: Yuntao Liu <liuyuntao12@...wei.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	ruanjinjie@...wei.com, kees@...nel.org, masahiroy@...nel.org
Subject: Re: [PATCH -next] arm32/boot/compressed: Force hidden visibility for
 all symbol references

On Fri, Jan 24, 2025 at 03:00:10PM +0100, Ard Biesheuvel wrote:
> On Fri, 24 Jan 2025 at 09:31, Yuntao Liu <liuyuntao12@...wei.com> wrote:
> >
> > Eliminate all GOT entries in the decompressor binary, by forcing hidden
> > visibility for all symbol references, which informs the compiler that
> > such references will be resolved at link time without the need for
> > allocating GOT entries.
> >
> > Include linux/hidden.h in Makefile, like x86, for the
> > hidden visibility attribute.
> >
> > Signed-off-by: Yuntao Liu <liuyuntao12@...wei.com>
> 
> Doesn't this break appended DTB?

Yes. It also breaks ZBOOT_ROM=y as well.

-- 
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