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From: Thomas Gleixner <tglx@linutronix.de>
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To: Celeste Liu <coelacanthushex@gmail.com>, =?utf-8?B?QmrDtnJuIFTDtnBl?=
 =?utf-8?B?bA==?= <bjorn@kernel.org>,
 Celeste Liu via B4 Relay <devnull+CoelacanthusHex.gmail.com@kernel.org>,
 Paul Walmsley <paul.walmsley@sifive.com>, Palmer Dabbelt
 <palmer@dabbelt.com>, Albert Ou <aou@eecs.berkeley.edu>, =?utf-8?B?Qmo=?=
 =?utf-8?B?w7ZybiBUw7ZwZWw=?=
 <bjorn@rivosinc.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Palmer Dabbelt <palmer@rivosinc.com>, Alexandre Ghiti <alex@ghiti.fr>,
 "Dmitry V. Levin" <ldv@strace.io>, Andrea Bolognani <abologna@redhat.com>,
 Felix Yan <felixonmars@archlinux.org>, Ruizhe Pan <c141028@gmail.com>,
 Shiqi Zhang <shiqi@isrc.iscas.ac.cn>, Guo Ren <guoren@kernel.org>, Yao Zi
 <ziyao@disroot.org>, Han Gao <gaohan@iscas.ac.cn>,
 linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
 stable@vger.kernel.org
Subject: Re: [PATCH] riscv/entry: get correct syscall number from
 syscall_get_nr()
In-Reply-To: <2b1a96b1-dbc5-40ed-b1b6-2c82d3df9eb2@gmail.com>
References: <87ldya4nv0.ffs@tglx>
 <3dc10d89-6c0c-4654-95ed-dd6f19efbad4@gmail.com> <87a5ep4k0n.ffs@tglx>
 <2b1a96b1-dbc5-40ed-b1b6-2c82d3df9eb2@gmail.com>
Date: Sun, 27 Oct 2024 22:52:03 +0100
Message-ID: <877c9t43jw.ffs@tglx>
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On Mon, Oct 28 2024 at 01:01, Celeste Liu wrote:
> On 2024-10-27 23:56, Thomas Gleixner wrote:
>> Equivalently you need to be able to modify orig_a0 for changing arg0,
>> no?
>
> Ok. 
>
> Greg, could you accept a backport a new API parameter for 
> PTRACE_GETREGSET/PTRACE_SETREGSET to 4.19 LTS branch?

Fix the problem properly and put a proper Fixes tag on it and worry
about the backport later.

Thanks,

        tglx