linux-kernel - Re: [RFC PATCH v4 01/13] ptrace: Use regset

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Message-ID: <20200527113158.GA9100@redhat.com>
Date:   Wed, 27 May 2020 13:31:59 +0200
From:   Oleg Nesterov <oleg@...hat.com>
To:     Greentime Hu <greentime.hu@...ive.com>
Cc:     Guo Ren <guoren@...ux.alibaba.com>,
        Vincent Chen <vincent.chen@...ive.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmerdabbelt@...gle.com>,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH v4 01/13] ptrace: Use regset_size() for dynamic
 regset size.

On 05/27, Greentime Hu wrote:
>
> It seems I only needs to update this line, right?
> - kiov->iov_len = min(kiov->iov_len,  (__kernel_size_t) (regset->n *
> regset->size));
> + kiov->iov_len = min(kiov->iov_len,  (__kernel_size_t)
> regset_size(task, regset));

Yes, agreed.

Oleg.