Date: Fri, 1 Nov 2019 13:32:46 -0700 From: Sami Tolvanen <samitolvanen@...gle.com> To: Kees Cook <keescook@...omium.org> Cc: Will Deacon <will@...nel.org>, Catalin Marinas <catalin.marinas@....com>, Steven Rostedt <rostedt@...dmis.org>, Masami Hiramatsu <mhiramat@...nel.org>, Ard Biesheuvel <ard.biesheuvel@...aro.org>, Dave Martin <Dave.Martin@....com>, Laura Abbott <labbott@...hat.com>, Mark Rutland <mark.rutland@....com>, Nick Desaulniers <ndesaulniers@...gle.com>, Jann Horn <jannh@...gle.com>, Miguel Ojeda <miguel.ojeda.sandonis@...il.com>, Masahiro Yamada <yamada.masahiro@...ionext.com>, clang-built-linux <clang-built-linux@...glegroups.com>, Kernel Hardening <kernel-hardening@...ts.openwall.com>, linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [PATCH v3 11/17] arm64: disable function graph tracing with SCS On Thu, Oct 31, 2019 at 8:58 PM Kees Cook <keescook@...omium.org> wrote: > IIRC, the argument was to disable these on a per-arch basis instead of > doing it as a "depends on !SHADOW_CALL_STACK" in the top-level function > graph tracer Kconfig? Yes, that's correct. > (I'm just thinking ahead to doing this again for > other architectures, though, I guess, there is much more work than just > that for, say, x86.) We can always change this later if needed, and possibly figure out how to make function graph tracing and kretprobes work with SCS. Sami
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