From: Peter Zijlstra <peterz@infradead.org>
To: Kees Cook <kees@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>,
Vegard Nossum <vegard.nossum@oracle.com>,
Miguel Ojeda <ojeda@kernel.org>,
Linus Walleij <linus.walleij@linaro.org>,
Jeff Johnson <jeff.johnson@oss.qualcomm.com>,
Randy Dunlap <rdunlap@infradead.org>,
David Woodhouse <dwmw2@infradead.org>,
"Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>,
Nick Desaulniers <nick.desaulniers+lkml@gmail.com>,
Bill Wendling <morbo@google.com>,
Justin Stitt <justinstitt@google.com>,
Marco Elver <elver@google.com>,
Przemek Kitszel <przemyslaw.kitszel@intel.com>,
Ramon de C Valle <rcvalle@google.com>,
Jonathan Corbet <corbet@lwn.net>,
"Paul E. McKenney" <paulmck@kernel.org>,
Nicolas Schier <nicolas.schier@linux.dev>,
Masahiro Yamada <masahiroy@kernel.org>,
Arnd Bergmann <arnd@arndb.de>,
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
Sami Tolvanen <samitolvanen@google.com>,
Mark Rutland <mark.rutland@arm.com>,
linux-kernel@vger.kernel.org, llvm@lists.linux.dev,
linux-doc@vger.kernel.org, linux-kbuild@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, x86@kernel.org,
linux-hardening@vger.kernel.org
Subject: Re: [PATCH v2 0/9] kcfi: Prepare for GCC support
Date: Thu, 4 Sep 2025 22:01:34 +0200 [thread overview]
Message-ID: <20250904200134.GA4067720@noisy.programming.kicks-ass.net> (raw)
In-Reply-To: <202509040933.06AF02E714@keescook>
On Thu, Sep 04, 2025 at 09:37:14AM -0700, Kees Cook wrote:
> On Thu, Sep 04, 2025 at 09:04:10AM +0200, Peter Zijlstra wrote:
> > On Wed, Sep 03, 2025 at 08:46:39PM -0700, Kees Cook wrote:
> >
> > > Kees Cook (9):
> > > compiler_types.h: Move __nocfi out of compiler-specific header
> > > x86/traps: Clarify KCFI instruction layout
> > > x86/cfi: Document the "cfi=" bootparam options
> > > x86/cfi: Standardize on common "CFI:" prefix for CFI reports
> > > x86/cfi: Add "debug" option to "cfi=" bootparam
> > > x86/cfi: Remove __noinitretpoline and __noretpoline
> >
> > So I can take these first 6 patches (and edit that debug patch to
> > un-annoy myself ;-), but I'm thinking this Kconfig stuff:
>
> Sure, yeah. Do you want a v3 for the debug stuff that uses your proposed
> helper?
Nah, already done :-) I just pushed out these 6 and my UDB hackery to
queue.git/x86/core. If the robots don't complain, I'll stuff it into tip
in a few days.
> > > kconfig: Add transitional symbol attribute for migration support
> > > kcfi: Rename CONFIG_CFI_CLANG to CONFIG_CFI
> >
> > Should perhaps go through the kbuild tree? A
>
> I had chatted offline with Nathan about this series, and he'd suggested
> the kconfig change could go with it's first user (the rename). So if you
> don't want to put it in -tip, I can take it in the hardening tree.
> (There's no dependencies between these 2 and the first 6.)
So I suppose I can carry them, just to keep the lot together, but then I
need an ack from someone that actually knows this Kconfig language stuff
:-)
You taking them through the hardening tree also works for em.
next prev parent reply other threads:[~2025-09-05 2:19 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-04 3:46 [PATCH v2 0/9] kcfi: Prepare for GCC support Kees Cook
2025-09-04 3:46 ` [PATCH v2 1/9] compiler_types.h: Move __nocfi out of compiler-specific header Kees Cook
2025-09-04 18:28 ` Nathan Chancellor
2025-09-04 3:46 ` [PATCH v2 2/9] x86/traps: Clarify KCFI instruction layout Kees Cook
2025-09-04 3:46 ` [PATCH v2 3/9] x86/cfi: Document the "cfi=" bootparam options Kees Cook
2025-09-04 18:32 ` Nathan Chancellor
2025-09-04 3:46 ` [PATCH v2 4/9] x86/cfi: Standardize on common "CFI:" prefix for CFI reports Kees Cook
2025-09-04 18:40 ` Nathan Chancellor
2025-09-05 0:40 ` Kees Cook
2025-09-04 3:46 ` [PATCH v2 5/9] x86/cfi: Add "debug" option to "cfi=" bootparam Kees Cook
2025-09-04 7:00 ` Peter Zijlstra
2025-09-04 3:46 ` [PATCH v2 6/9] x86/cfi: Remove __noinitretpoline and __noretpoline Kees Cook
2025-09-04 3:46 ` [PATCH v2 7/9] kconfig: Add transitional symbol attribute for migration support Kees Cook
2025-09-04 3:46 ` [PATCH v2 8/9] kcfi: Rename CONFIG_CFI_CLANG to CONFIG_CFI Kees Cook
2025-09-04 3:46 ` [PATCH v2 9/9] ARM: traps: Implement KCFI trap handler for ARM32 Kees Cook
2025-09-04 7:04 ` [PATCH v2 0/9] kcfi: Prepare for GCC support Peter Zijlstra
2025-09-04 16:37 ` Kees Cook
2025-09-04 20:01 ` Peter Zijlstra [this message]
2025-09-05 0:42 ` Kees Cook
2025-09-05 7:44 ` Miguel Ojeda
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