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Message-ID: <CABCJKufdDxJ_q-8Sj3+4rPuhAB3bdo_EN=DybZF5eenwZB4v3g@mail.gmail.com>
Date: Fri, 18 Oct 2019 10:08:16 -0700
From: Sami Tolvanen <samitolvanen@...gle.com>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: Will Deacon <will@...nel.org>, Catalin Marinas <catalin.marinas@....com>, 
	Ard Biesheuvel <ard.biesheuvel@...aro.org>, Dave Martin <Dave.Martin@....com>, 
	Kees Cook <keescook@...omium.org>, Laura Abbott <labbott@...hat.com>, 
	Mark Rutland <mark.rutland@....com>, Nick Desaulniers <ndesaulniers@...gle.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 09/18] trace: disable function graph tracing with SCS

On Fri, Oct 18, 2019 at 10:01 AM Steven Rostedt <rostedt@...dmis.org> wrote:
> NAK, Put this in the arch code.

> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index 41a9b4257b72..d68339987604 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -149,7 +149,7 @@ config ARM64
>         select HAVE_FTRACE_MCOUNT_RECORD
>         select HAVE_FUNCTION_TRACER
>         select HAVE_FUNCTION_ERROR_INJECTION
> -       select HAVE_FUNCTION_GRAPH_TRACER
> +       select HAVE_FUNCTION_GRAPH_TRACER if ROP_PROTECTION_NONE
>         select HAVE_GCC_PLUGINS
>         select HAVE_HW_BREAKPOINT if PERF_EVENTS
>         select HAVE_IRQ_TIME_ACCOUNTING

Thanks, Steven. I'll fix this and kretprobes in v2.

Sami

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