linux-kernel - Re: [PATCH v3 0/2] powerpc/ptrace: Hard wire PT_SOFTE value to 1 in gpr

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Date:   Thu, 19 Nov 2020 18:19:55 +0100
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Oleg Nesterov <oleg@...hat.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Madhavan Srinivasan <maddy@...ux.vnet.ibm.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Paul Mackerras <paulus@...ba.org>
Cc:     Al Viro <viro@...iv.linux.org.uk>,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>,
        Christophe Leroy <christophe.leroy@....fr>,
        Jan Kratochvil <jan.kratochvil@...hat.com>,
        Nicholas Piggin <npiggin@...il.com>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 0/2] powerpc/ptrace: Hard wire PT_SOFTE value to 1 in
 gpr_get() too



Le 19/11/2020 à 17:01, Oleg Nesterov a écrit :
> Can we finally fix this problem? ;)
> 
> My previous attempt was ignored, see

That doesn't seems right.

Michael made some suggestion it seems, can you respond to it ?

> 
> 	https://lore.kernel.org/lkml/20190917121256.GA8659@redhat.com/
> 
> Now that gpr_get() was changed to use membuf API we can make a simpler fix.
> 
> Sorry, uncompiled/untested, I don't have a ppc machine.

I compiled with ppc64_defconfig, that seems ok. Still untested.

Christophe

> 
> Oleg.
> 
>   arch/powerpc/kernel/ptrace/ptrace-tm.c   | 21 ++++++++++++---------
>   arch/powerpc/kernel/ptrace/ptrace-view.c | 21 ++++++++++++---------
>   include/linux/regset.h                   | 12 ++++++++++++
>   3 files changed, 36 insertions(+), 18 deletions(-)
>