linux-kernel - [UML] Question about arch/x86/um/vdso/vdso-syms.lds

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Date:   Wed, 9 May 2018 12:36:18 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     Richard Weinberger <richard@....at>
Cc:     Jeff Dike <jdike@...toit.com>, Nicholas Piggin <npiggin@...il.com>,
        uml-devel <user-mode-linux-devel@...ts.sourceforge.net>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [UML] Question about arch/x86/um/vdso/vdso-syms.lds

Hi Richard,


Please let me ask a question about vdso-syms.lds
under arch/x86/um/vdso/.

This file exists since:

commit f1c2bb8b9964ed31de988910f8b1cfb586d30091
Author: Richard Weinberger <richard@....at>
Date:   Mon Jul 25 17:12:54 2011 -0700

    um: implement a x86_64 vDSO


So, I think you are the right person
to reach out to.


Originally, vdso-syms.lds was linked to vmlinux,
but it is not since:

commit 827880ec260ba048f95fe646b96a205c394fa0f0
Author: Nicholas Piggin <npiggin@...il.com>
Date:   Fri Jun 9 15:24:16 2017 +1000

    x86/um: thin archives build fix



Something may be missing from my thought,
but I wonder what vdso-syms.lds is used for.



-- 
Best Regards
Masahiro Yamada