linux-kernel - Re: [PATCH] riscv: compat_vdso: install compat_vdso.so.dbg to /lib/modules/*/vdso/

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Date: Fri, 15 Mar 2024 13:06:09 +0900
From: Masahiro Yamada <masahiroy@...nel.org>
To: Alexandre Ghiti <alex@...ti.fr>
Cc: Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt <palmer@...belt.com>, 
	Albert Ou <aou@...s.berkeley.edu>, linux-riscv@...ts.infradead.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] riscv: compat_vdso: install compat_vdso.so.dbg to /lib/modules/*/vdso/

On Thu, Mar 7, 2024 at 5:12 AM Alexandre Ghiti <alex@...ti.fr> wrote:
>
> Hi Masahiro,
>
> On 24/02/2024 04:37, Masahiro Yamada wrote:
> > Ping x 2 ?
> >
> >
> >
> >
> >
> > On Sun, Jan 21, 2024 at 6:48 AM Masahiro Yamada <masahiroy@...nel.org> wrote:
> >> On Fri, Nov 17, 2023 at 9:58 PM Masahiro Yamada <masahiroy@...nel.org> wrote:
> >>> 'make vdso_install' installs debug vdso files to /lib/modules/*/vdso/.
> >>>
> >>> Only for the compat vdso on riscv, the installation destination differs;
> >>> compat_vdso.so.dbg is installed to /lib/module/*/compat_vdso/.
> >>>
> >>> To follow the standard install destination and simplify the vdso_install
> >>> logic, change the install destination to standard /lib/modules/*/vdso/.
> >>>
> >>> Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
> >>> ---
> >>
> >> Ping?
> >> (in case "yet more RISC-V updates" happens)
> >>
> >>
> >>
> >>
> >>>   arch/riscv/Makefile | 2 +-
> >>>   1 file changed, 1 insertion(+), 1 deletion(-)
> >>>
> >>> diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile
> >>> index a74be78678eb..5cbe596345c1 100644
> >>> --- a/arch/riscv/Makefile
> >>> +++ b/arch/riscv/Makefile
> >>> @@ -146,7 +146,7 @@ endif
> >>>   endif
> >>>
> >>>   vdso-install-y                 += arch/riscv/kernel/vdso/vdso.so.dbg
> >>> -vdso-install-$(CONFIG_COMPAT)  += arch/riscv/kernel/compat_vdso/compat_vdso.so.dbg:../compat_vdso/compat_vdso.so
> >>> +vdso-install-$(CONFIG_COMPAT)  += arch/riscv/kernel/compat_vdso/compat_vdso.so.dbg
> >>>
> >>>   ifneq ($(CONFIG_XIP_KERNEL),y)
> >>>   ifeq ($(CONFIG_RISCV_M_MODE)$(CONFIG_ARCH_CANAAN),yy)
> >>> --
> >>> 2.40.1
> >>>
> >>
> >> --
> >> Best Regards
> >> Masahiro Yamada
> >
> >
> > --
> > Best Regards
> > Masahiro Yamada
> >
> > _______________________________________________
> > linux-riscv mailing list
> > linux-riscv@...ts.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-riscv
>
>
> Couldn't changing this library install path break some existing
> application? I mean it kind of breaks where the library is expected to
> be right?

Do you have a particular library in mind?

RISV-V is the only architecture that installs a debug vdso
to a different location than the
standard lib/modules/*/vdso/.

I regard this as a fix.

-- 
Best Regards
Masahiro Yamada

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