From: Linus Walleij <linus.walleij@linaro.org>
To: David Laight <David.Laight@aculab.com>
Cc: "Will Deacon" <will@kernel.org>, "Jian Cai" <jiancai@google.com>,
"Nick Desaulniers" <ndesaulniers@google.com>,
"Manoj Gupta" <manojgupta@google.com>,
"Luis Lozano" <llozano@google.com>,
clang-built-linux <clang-built-linux@googlegroups.com>,
"Nathan Chancellor" <nathan@kernel.org>,
"Russell King" <linux@armlinux.org.uk>,
"Catalin Marinas" <catalin.marinas@arm.com>,
"James Morris" <jmorris@namei.org>,
"Serge E. Hallyn" <serge@hallyn.com>,
"Arnd Bergmann" <arnd@arndb.de>,
"Masahiro Yamada" <masahiroy@kernel.org>,
"Kees Cook" <keescook@chromium.org>,
"Ard Biesheuvel" <ardb@kernel.org>,
"Andreas Färber" <afaerber@suse.de>,
"Ingo Molnar" <mingo@kernel.org>, "Marc Zyngier" <maz@kernel.org>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Mike Rapoport" <rppt@kernel.org>,
"Mark Rutland" <mark.rutland@arm.com>,
"David Brazdil" <dbrazdil@google.com>,
"James Morse" <james.morse@arm.com>,
"Linux ARM" <linux-arm-kernel@lists.infradead.org>,
"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
"linux-security-module@vger.kernel.org"
<linux-security-module@vger.kernel.org>
Subject: Re: [PATCH v4] ARM: Implement SLS mitigation
Date: Wed, 3 Mar 2021 16:31:41 +0100 [thread overview]
Message-ID: <CACRpkdYM3x6pJU3Vi+EEHtC3wD1DkrtVbGDd3PFHWL0fxjSA9g@mail.gmail.com> (raw)
In-Reply-To: <49e8725f29ab4ecda6d669e9216bca29@AcuMS.aculab.com>
On Wed, Mar 3, 2021 at 4:29 PM David Laight <David.Laight@aculab.com> wrote:
> > On Tue, Feb 23, 2021 at 11:05 AM Will Deacon <will@kernel.org> wrote:
> > I wrote some suggestions on follow-ups in my reply, and I can
> > help out doing some of the patches, I think.
> >
> > Since ARM32 RET is mov pc, <>
> > git grep 'mov.*pc,' | wc -l gives 93 sites in arch/arm.
> > I suppose these need to come out:
> >
> > mov pc, lr
> > dsb(nsh);
> > isb();
>
> Won't that go horribly wrong for conditional returns?
It will so I would not insert it after those. It has to be
on a case-by-base basis, I am not planning any
search and replace operations.
Yours,
Linus Walleij
next prev parent reply other threads:[~2021-03-03 18:43 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-12 5:14 [PATCH] ARM: Implement Clang's SLS mitigation Jian Cai
2021-02-12 5:55 ` Nathan Chancellor
2021-02-12 10:41 ` David Laight
2021-02-12 19:52 ` [PATCH v2] " Jian Cai
2021-02-17 9:49 ` Will Deacon
2021-02-17 11:05 ` David Laight
2021-03-25 14:01 ` Linus Walleij
2021-02-17 18:20 ` Nick Desaulniers
2021-02-19 20:18 ` [PATCH v3] ARM: Implement " Jian Cai
2021-02-19 20:30 ` Nathan Chancellor
2021-02-19 23:08 ` [PATCH v4] " Jian Cai
2021-02-21 10:13 ` Russell King - ARM Linux admin
2021-02-22 11:58 ` Will Deacon
2021-02-22 21:50 ` Jian Cai
2021-02-23 10:04 ` Will Deacon
2021-03-03 15:18 ` Linus Walleij
2021-03-03 15:29 ` David Laight
2021-03-03 15:31 ` Linus Walleij [this message]
2021-02-23 2:31 ` [PATCH v5] " Jian Cai
2021-02-23 2:35 ` Jian Cai
2021-03-03 15:04 ` Linus Walleij
2021-03-04 23:22 ` Jian Cai
2021-03-06 12:25 ` Linus Walleij
2021-03-10 4:43 ` Jian Cai
2021-03-22 11:45 ` Linus Walleij
2021-03-23 22:39 ` Jian Cai
2021-03-05 0:53 ` [PATCH v6] " Jian Cai
2021-03-05 9:52 ` Will Deacon
2021-03-06 12:27 ` Linus Walleij
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