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Date:   Sat, 9 Dec 2023 01:06:56 +0000
From:   Mark Brown <broonie@kernel.org>
To:     Robert O'Callahan <robert@ocallahan.org>
Cc:     "Rick P. Edgecombe" <rick.p.edgecombe@intel.com>,
        Deepak Gupta <debug@rivosinc.com>,
        Szabolcs Nagy <Szabolcs.Nagy@arm.com>,
        "H.J. Lu" <hjl.tools@gmail.com>,
        Florian Weimer <fweimer@redhat.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        Dave Hansen <dave.hansen@linux.intel.com>, x86@kernel.org,
        "H. Peter Anvin" <hpa@zytor.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Juri Lelli <juri.lelli@redhat.com>,
        Vincent Guittot <vincent.guittot@linaro.org>,
        Dietmar Eggemann <dietmar.eggemann@arm.com>,
        Steven Rostedt <rostedt@goodmis.org>,
        Ben Segall <bsegall@google.com>, Mel Gorman <mgorman@suse.de>,
        Daniel Bristot de Oliveira <bristot@redhat.com>,
        Valentin Schneider <vschneid@redhat.com>,
        Christian Brauner <brauner@kernel.org>,
        Shuah Khan <shuah@kernel.org>, linux-kernel@vger.kernel.org,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>,
        Kees Cook <keescook@chromium.org>, jannh@google.com,
        linux-kselftest@vger.kernel.org, linux-api@vger.kernel.org,
        David Hildenbrand <david@redhat.com>
Subject: Re: [PATCH RFT v4 0/5] fork: Support shadow stacks in clone3()
Message-ID: <ZXO9sPEtVEuaTx/p@finisterre.sirena.org.uk>
References: <20231128-clone3-shadow-stack-v4-0-8b28ffe4f676@kernel.org>
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On Sat, Dec 09, 2023 at 01:59:16PM +1300, Robert O'Callahan wrote:

> overriding clone_args::shadow_stack_size to zero in the call to
> clone3(), instead having the replay task call map_shadow_stack() to
> put the the shadow stack in the right place, and then setting its SSP
> via ptrace. Will that work?

That should work with the interface in the current series, yes.

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