linux-kernel - Re: [PATCH v3 22/23] powerpc/vdso: Migrate native signals to generic vdso

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Date:   Tue, 15 Jun 2021 22:52:00 +1000
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Dmitry Safonov <dima@...sta.com>, linux-kernel@...r.kernel.org
Cc:     Dmitry Safonov <0x7f454c46@...il.com>,
        Dmitry Safonov <dima@...sta.com>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Andy Lutomirski <luto@...nel.org>,
        Arnd Bergmann <arnd@...db.de>, Borislav Petkov <bp@...en8.de>,
        Catalin Marinas <catalin.marinas@....com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Guo Ren <guoren@...nel.org>, "H. Peter Anvin" <hpa@...or.com>,
        Ingo Molnar <mingo@...hat.com>,
        Oleg Nesterov <oleg@...hat.com>,
        Russell King <linux@...linux.org.uk>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Vincenzo Frascino <vincenzo.frascino@....com>,
        Will Deacon <will@...nel.org>, x86@...nel.org,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>
Subject: Re: [PATCH v3 22/23] powerpc/vdso: Migrate native signals to
 generic vdso_base

Dmitry Safonov <dima@...sta.com> writes:
> Generic way to track the land vma area.
> Stat speaks for itself.
>
> Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
> Cc: Michael Ellerman <mpe@...erman.id.au>
> Cc: Paul Mackerras <paulus@...ba.org>
> Signed-off-by: Dmitry Safonov <dima@...sta.com>
> ---
>  arch/powerpc/Kconfig                          |  1 +
>  arch/powerpc/include/asm/book3s/32/mmu-hash.h |  1 -
>  arch/powerpc/include/asm/book3s/64/mmu.h      |  1 -
>  arch/powerpc/include/asm/mmu_context.h        |  9 ------
>  arch/powerpc/include/asm/nohash/32/mmu-40x.h  |  1 -
>  arch/powerpc/include/asm/nohash/32/mmu-44x.h  |  1 -
>  arch/powerpc/include/asm/nohash/32/mmu-8xx.h  |  1 -
>  arch/powerpc/include/asm/nohash/mmu-book3e.h  |  1 -
>  arch/powerpc/kernel/signal_32.c               |  8 ++---
>  arch/powerpc/kernel/signal_64.c               |  4 +--
>  arch/powerpc/kernel/vdso.c                    | 31 +------------------
>  arch/powerpc/perf/callchain_32.c              |  8 ++---
>  arch/powerpc/perf/callchain_64.c              |  4 +--
>  arch/x86/include/asm/mmu_context.h            |  5 ---
>  include/asm-generic/mm_hooks.h                |  9 ++----
>  mm/mmap.c                                     |  7 -----
>  16 files changed, 16 insertions(+), 76 deletions(-)

LGTM.

Acked-by: Michael Ellerman <mpe@...erman.id.au> (powerpc)

cheers