From: Yu-cheng Yu <yu-cheng.yu@intel.com>
To: x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
linux-mm@kvack.org, linux-arch@vger.kernel.org,
linux-api@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>,
Andy Lutomirski <luto@kernel.org>,
Balbir Singh <bsingharora@gmail.com>,
Borislav Petkov <bp@alien8.de>,
Cyrill Gorcunov <gorcunov@gmail.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
Eugene Syromiatnikov <esyr@redhat.com>,
Florian Weimer <fweimer@redhat.com>,
"H.J. Lu" <hjl.tools@gmail.com>, Jann Horn <jannh@google.com>,
Jonathan Corbet <corbet@lwn.net>,
Kees Cook <keescook@chromium.org>,
Mike Kravetz <mike.kravetz@oracle.com>,
Nadav Amit <nadav.amit@gmail.com>,
Oleg Nesterov <oleg@redhat.com>, Pavel Machek <pavel@ucw.cz>,
Peter Zijlstra <peterz@infradead.org>,
Randy Dunlap <rdunlap@infradead.org>,
"Ravi V. Shankar" <ravi.v.shankar@intel.com>,
Vedvyas Shanbhogue <vedvyas.shanbhogue@intel.com>,
Dave Martin <Dave.Martin@arm.com>,
Weijiang Yang <weijiang.yang@intel.com>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Subject: [RFC PATCH 2/5] selftest/x86: Enable CET for selftests/x86
Date: Thu, 21 May 2020 14:17:17 -0700 [thread overview]
Message-ID: <20200521211720.20236-3-yu-cheng.yu@intel.com> (raw)
In-Reply-To: <20200521211720.20236-1-yu-cheng.yu@intel.com>
To build CET-enabled applications, GCC needs to support '-fcf-protection'.
Update x86 selftest makefile to detect and enable CET for x86 selftest
applications.
Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com>
---
tools/testing/selftests/x86/Makefile | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/tools/testing/selftests/x86/Makefile b/tools/testing/selftests/x86/Makefile
index 5d49bfec1e9a..f1bf5ab87160 100644
--- a/tools/testing/selftests/x86/Makefile
+++ b/tools/testing/selftests/x86/Makefile
@@ -9,6 +9,7 @@ UNAME_M := $(shell uname -m)
CAN_BUILD_I386 := $(shell ./check_cc.sh $(CC) trivial_32bit_program.c -m32)
CAN_BUILD_X86_64 := $(shell ./check_cc.sh $(CC) trivial_64bit_program.c)
CAN_BUILD_WITH_NOPIE := $(shell ./check_cc.sh $(CC) trivial_program.c -no-pie)
+CAN_BUILD_CET := $(shell ./check_cc.sh $(CC) trivial_program.c -fcf-protection)
TARGETS_C_BOTHBITS := single_step_syscall sysret_ss_attrs syscall_nt test_mremap_vdso \
check_initial_reg_state sigreturn iopl ioperm \
@@ -35,6 +36,10 @@ BINARIES_64 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_64))
CFLAGS := -O2 -g -std=gnu99 -pthread -Wall
+ifeq ($(CAN_BUILD_CET),1)
+CFLAGS += -fcf-protection -mshstk
+endif
+
# call32_from_64 in thunks.S uses absolute addresses.
ifeq ($(CAN_BUILD_WITH_NOPIE),1)
CFLAGS += -no-pie
--
2.21.0
next prev parent reply other threads:[~2020-05-21 21:17 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-21 21:17 [RFC PATCH 0/5] Update selftests/x86 for CET Yu-cheng Yu
2020-05-21 21:17 ` [RFC PATCH 1/5] x86/cet/shstk: Modify ARCH_X86_CET_ALLOC_SHSTK for 32-bit address range Yu-cheng Yu
2020-05-21 22:43 ` Kees Cook
2020-05-21 21:17 ` Yu-cheng Yu [this message]
2020-05-21 22:44 ` [RFC PATCH 2/5] selftest/x86: Enable CET for selftests/x86 Kees Cook
2020-05-21 22:58 ` Yu-cheng Yu
2020-05-21 21:17 ` [RFC PATCH 3/5] selftest/x86: Fix sigreturn_64 test Yu-cheng Yu
2020-05-21 22:47 ` Kees Cook
2020-05-21 22:48 ` Kees Cook
2020-05-21 21:17 ` [RFC PATCH 4/5] selftest/x86: Fix sysret_rip with ENDBR Yu-cheng Yu
2020-05-21 21:34 ` Thomas Gleixner
2020-05-21 22:59 ` Yu-cheng Yu
2020-05-21 21:17 ` [RFC PATCH 5/5] selftest/x86: Add CET quick test Yu-cheng Yu
2020-05-21 23:02 ` Kees Cook
2020-05-21 23:23 ` Yu-cheng Yu
2020-05-22 9:28 ` Peter Zijlstra
2020-05-22 15:10 ` Yu-cheng Yu
2020-05-22 17:22 ` Kees Cook
2020-05-22 17:27 ` Peter Zijlstra
2020-05-22 17:36 ` Kees Cook
2020-05-22 18:07 ` Yu-cheng Yu
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