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Date: Tue, 16 Mar 2021 13:44:33 -0700 From: Sami Tolvanen <samitolvanen@...gle.com> To: Kees Cook <keescook@...omium.org> Cc: Nathan Chancellor <nathan@...nel.org>, Nick Desaulniers <ndesaulniers@...gle.com>, Masahiro Yamada <masahiroy@...nel.org>, Will Deacon <will@...nel.org>, Jessica Yu <jeyu@...nel.org>, Arnd Bergmann <arnd@...db.de>, Tejun Heo <tj@...nel.org>, bpf@...r.kernel.org, linux-hardening@...r.kernel.org, linux-arch <linux-arch@...r.kernel.org>, linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>, linux-kbuild <linux-kbuild@...r.kernel.org>, PCI <linux-pci@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [PATCH 17/17] arm64: allow CONFIG_CFI_CLANG to be selected On Thu, Mar 11, 2021 at 6:51 PM Kees Cook <keescook@...omium.org> wrote: > > On Thu, Mar 11, 2021 at 04:49:19PM -0800, Sami Tolvanen wrote: > > Select ARCH_SUPPORTS_CFI_CLANG to allow CFI to be enabled. > > > > Signed-off-by: Sami Tolvanen <samitolvanen@...gle.com> > > Reviewed-by: Kees Cook <keescook@...omium.org> > > Random thought: the vDSO doesn't need special handling because it > doesn't make any indirect calls, yes? That might be true, but we also filter out CC_FLAGS_LTO for the vDSO, which disables CFI as well. Sami
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