linux-kernel - Re: [PATCH v11 2/2] ptrace,syscall_user_dispatch: checkpoint/restore support for SUD

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Message-ID: <20230223183756.GB26182@redhat.com>
Date:   Thu, 23 Feb 2023 19:37:56 +0100
From:   Oleg Nesterov <oleg@...hat.com>
To:     Gregory Price <gregory.price@...verge.com>
Cc:     Gregory Price <gourry.memverge@...il.com>,
        linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
        avagin@...il.com, peterz@...radead.org, luto@...nel.org,
        krisman@...labora.com, tglx@...utronix.de, corbet@....net,
        shuah@...nel.org
Subject: Re: [PATCH v11 2/2] ptrace,syscall_user_dispatch: checkpoint/restore
 support for SUD

On 02/23, Gregory Price wrote:
>
> On Thu, Feb 23, 2023 at 01:30:20PM +0100, Oleg Nesterov wrote:
> >
> > Well, if this is the only reason then this check and the "size" argument
> > ahould be removed, imo.
> >
> > But perhaps it can be useful for future extensions, I dunno.
> >
> > Oleg.
> >
>
> I suppose yes it could also be used to detect differences in versioning
> if the struct changes in the future, and that would not require an API
> change in the future to support it.

Yes this is what I tried to say. So I won't argue.

Oleg.