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Date: Thu, 24 Oct 2019 21:20:15 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: samitolvanen@...gle.com
Cc: Will Deacon <will@...nel.org>, Catalin Marinas
<catalin.marinas@....com>, Masami Hiramatsu <mhiramat@...nel.org>, 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>,
Jann Horn <jannh@...gle.com>, Miguel Ojeda
<miguel.ojeda.sandonis@...il.com>, Masahiro Yamada
<yamada.masahiro@...ionext.com>, clang-built-linux@...glegroups.com,
kernel-hardening@...ts.openwall.com, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 16/17] arm64: disable SCS for hypervisor code
On Thu, 24 Oct 2019 15:51:31 -0700
samitolvanen@...gle.com wrote:
Suggested-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
;-)
> Signed-off-by: Sami Tolvanen <samitolvanen@...gle.com>
> ---
> arch/arm64/kvm/hyp/Makefile | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/arch/arm64/kvm/hyp/Makefile b/arch/arm64/kvm/hyp/Makefile
> index ea710f674cb6..8289ea086e5e 100644
> --- a/arch/arm64/kvm/hyp/Makefile
> +++ b/arch/arm64/kvm/hyp/Makefile
> @@ -28,3 +28,6 @@ GCOV_PROFILE := n
> KASAN_SANITIZE := n
> UBSAN_SANITIZE := n
> KCOV_INSTRUMENT := n
> +
> +ORIG_CFLAGS := $(KBUILD_CFLAGS)
> +KBUILD_CFLAGS = $(subst $(CC_FLAGS_SCS),,$(ORIG_CFLAGS))
May want a comment above that that states:
# remove the SCS flags from all objects in this directory
-- Steve
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