linux-kernel - Re: [PATCH v4 0/2] Syscall User Redirection

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Message-ID: <20200716202234.wryj7pj7zmwcrxxx@wittgenstein>
Date:   Thu, 16 Jul 2020 22:22:34 +0200
From:   Christian Brauner <christian.brauner@...ntu.com>
To:     Kees Cook <keescook@...omium.org>
Cc:     Gabriel Krisman Bertazi <krisman@...labora.com>,
        Andy Lutomirski <luto@...nel.org>,
        Matthew Wilcox <willy@...radead.org>, tglx@...utronix.de,
        linux-kernel@...r.kernel.org, kernel@...labora.com,
        gofmanp@...il.com, linux-api@...r.kernel.org, x86@...nel.org,
        linux-kselftest@...r.kernel.org, shuah@...nel.org, jannh@...gle.com
Subject: Re: [PATCH v4 0/2] Syscall User Redirection

On Thu, Jul 16, 2020 at 01:04:38PM -0700, Kees Cook wrote:
> On Thu, Jul 16, 2020 at 03:31:39PM -0400, Gabriel Krisman Bertazi wrote:
> > This is v4 of Syscall User Redirection.  The implementation itself is
> > not modified from v3, it only applies the latest round of reviews to the
> > selftests.
> > 
> > __NR_syscalls is not really exported in header files other than
> > asm-generic for every architecture, so it felt safer to optionally
> > expose it with a fallback to a high value.
> > 
> > Also, I didn't expose tests for PR_GET as that is not currently
> > implemented.  If possible, I'd have it supported by a future patchset,
> > since it is not immediately necessary to support this feature.
> 
> Thanks! That all looks good to me.

Don't have any problem with this but did this ever get exposure on
linux-api? This is the first time I see this pop up.

Christian