From: Oleg Nesterov <oleg@redhat.com>
To: Gregory Price <gourry.memverge@gmail.com>
Cc: linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
avagin@gmail.com, peterz@infradead.org, luto@kernel.org,
krisman@collabora.com, tglx@linutronix.de, corbet@lwn.net,
shuah@kernel.org, Gregory Price <gregory.price@memverge.com>
Subject: Re: [PATCH v8 1/1] ptrace,syscall_user_dispatch: checkpoint/restore support for SUD
Date: Tue, 31 Jan 2023 19:58:02 +0100 [thread overview]
Message-ID: <20230131185802.GA7999@redhat.com> (raw)
In-Reply-To: <20230131144458.1980891-2-gregory.price@memverge.com>
On 01/31, Gregory Price wrote:
>
> Implement ptrace getter/setter interface for syscall user dispatch.
>
> These prctl settings are presently write-only, making it impossible to
> implement transparent checkpoint/restore via software like CRIU.
>
> 'on_dispatch' field is not exposed because it is a kernel-internal
> only field that cannot be 'true' when returning to userland.
>
> Signed-off-by: Gregory Price <gregory.price@memverge.com>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
next prev parent reply other threads:[~2023-01-31 18:59 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-31 14:44 [PATCH v8 0/1] Checkpoint Support for Syscall User Dispatch Gregory Price
2023-01-31 14:44 ` [PATCH v8 1/1] ptrace,syscall_user_dispatch: checkpoint/restore support for SUD Gregory Price
2023-01-31 18:58 ` Oleg Nesterov [this message]
2023-02-09 20:29 ` Andrei Vagin
2023-02-09 23:45 ` Thomas Gleixner
2023-02-09 23:46 ` Thomas Gleixner
2023-02-10 1:27 ` Gregory Price
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