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Message-ID: <ZXO9sPEtVEuaTx/p@finisterre.sirena.org.uk>
Date: Sat, 9 Dec 2023 01:06:56 +0000
From: Mark Brown <broonie@...nel.org>
To: Robert O'Callahan <robert@...llahan.org>
Cc: "Rick P. Edgecombe" <rick.p.edgecombe@...el.com>,
Deepak Gupta <debug@...osinc.com>,
Szabolcs Nagy <Szabolcs.Nagy@....com>,
"H.J. Lu" <hjl.tools@...il.com>,
Florian Weimer <fweimer@...hat.com>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
"H. Peter Anvin" <hpa@...or.com>,
Peter Zijlstra <peterz@...radead.org>,
Juri Lelli <juri.lelli@...hat.com>,
Vincent Guittot <vincent.guittot@...aro.org>,
Dietmar Eggemann <dietmar.eggemann@....com>,
Steven Rostedt <rostedt@...dmis.org>,
Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>,
Daniel Bristot de Oliveira <bristot@...hat.com>,
Valentin Schneider <vschneid@...hat.com>,
Christian Brauner <brauner@...nel.org>,
Shuah Khan <shuah@...nel.org>, linux-kernel@...r.kernel.org,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will@...nel.org>,
Kees Cook <keescook@...omium.org>, jannh@...gle.com,
linux-kselftest@...r.kernel.org, linux-api@...r.kernel.org,
David Hildenbrand <david@...hat.com>
Subject: Re: [PATCH RFT v4 0/5] fork: Support shadow stacks in clone3()
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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