From mboxrd@z Thu Jan  1 00:00:00 1970
From: fweimer at redhat.com (Florian Weimer)
Date: Wed, 2 May 2018 14:10:32 +0200
Subject: [PATCH] selftests/x86: Detect -no-pie availability
Message-ID: <20180502121433.7F874401F1BF7@oldenburg.str.redhat.com>

Some toolchains need -no-pie to build all tests, others do not support
the -no-pie flag at all.  Therefore, add another test for the
availability of the flag.

This amends commit 3346a6a4e5ba8c040360f753b26938cec31a4bdc
("selftests: x86: sysret_ss_attrs doesn't build on a PIE build").

Signed-off-by: Florian Weimer <fweimer at redhat.com>
Acked-by: Randy Dunlap <rdunlap at infradead.org>
Tested-by: Randy Dunlap <rdunlap at infradead.org>
---
 tools/testing/selftests/x86/Makefile          |  8 +++++++-
 tools/testing/selftests/x86/trivial_program.c | 10 ++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)
 create mode 100644 tools/testing/selftests/x86/trivial_program.c

diff --git a/tools/testing/selftests/x86/Makefile b/tools/testing/selftests/x86/Makefile
index d744991c0f4f..94c89261a236 100644
--- a/tools/testing/selftests/x86/Makefile
+++ b/tools/testing/selftests/x86/Makefile
@@ -8,6 +8,7 @@ include ../lib.mk
 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)
 
 TARGETS_C_BOTHBITS := single_step_syscall sysret_ss_attrs syscall_nt test_mremap_vdso \
 			check_initial_reg_state sigreturn iopl mpx-mini-test ioperm \
@@ -31,7 +32,12 @@ BINARIES_64 := $(TARGETS_C_64BIT_ALL:%=%_64)
 BINARIES_32 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_32))
 BINARIES_64 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_64))
 
-CFLAGS := -O2 -g -std=gnu99 -pthread -Wall -no-pie
+CFLAGS := -O2 -g -std=gnu99 -pthread -Wall
+
+# call32_from_64 in thunks.S uses absolute addresses.
+ifeq ($(CAN_BUILD_WITH_NOPIE),1)
+CFLAGS += -no-pie
+endif
 
 define gen-target-rule-32
 $(1) $(1)_32: $(OUTPUT)/$(1)_32
diff --git a/tools/testing/selftests/x86/trivial_program.c b/tools/testing/selftests/x86/trivial_program.c
new file mode 100644
index 000000000000..46a447163b93
--- /dev/null
+++ b/tools/testing/selftests/x86/trivial_program.c
@@ -0,0 +1,10 @@
+/* Trivial program to check that compilation with certain flags is working. */
+
+#include <stdio.h>
+
+int
+main(void)
+{
+	puts("");
+	return 0;
+}
-- 
2.14.3

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From mboxrd@z Thu Jan  1 00:00:00 1970
From: fweimer@redhat.com (Florian Weimer)
Date: Wed, 2 May 2018 14:10:32 +0200
Subject: [PATCH] selftests/x86: Detect -no-pie availability
Message-ID: <20180502121433.7F874401F1BF7@oldenburg.str.redhat.com>
Content-Type: text/plain; charset="UTF-8"
Message-ID: <20180502121032.IHDsT1tiFpsYQ18K0KbiJy4UnMMLIhBaUdHHKckRPZE@z>

Some toolchains need -no-pie to build all tests, others do not support
the -no-pie flag at all.  Therefore, add another test for the
availability of the flag.

This amends commit 3346a6a4e5ba8c040360f753b26938cec31a4bdc
("selftests: x86: sysret_ss_attrs doesn't build on a PIE build").

Signed-off-by: Florian Weimer <fweimer at redhat.com>
Acked-by: Randy Dunlap <rdunlap at infradead.org>
Tested-by: Randy Dunlap <rdunlap at infradead.org>
---
 tools/testing/selftests/x86/Makefile          |  8 +++++++-
 tools/testing/selftests/x86/trivial_program.c | 10 ++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)
 create mode 100644 tools/testing/selftests/x86/trivial_program.c

diff --git a/tools/testing/selftests/x86/Makefile b/tools/testing/selftests/x86/Makefile
index d744991c0f4f..94c89261a236 100644
--- a/tools/testing/selftests/x86/Makefile
+++ b/tools/testing/selftests/x86/Makefile
@@ -8,6 +8,7 @@ include ../lib.mk
 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)
 
 TARGETS_C_BOTHBITS := single_step_syscall sysret_ss_attrs syscall_nt test_mremap_vdso \
 			check_initial_reg_state sigreturn iopl mpx-mini-test ioperm \
@@ -31,7 +32,12 @@ BINARIES_64 := $(TARGETS_C_64BIT_ALL:%=%_64)
 BINARIES_32 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_32))
 BINARIES_64 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_64))
 
-CFLAGS := -O2 -g -std=gnu99 -pthread -Wall -no-pie
+CFLAGS := -O2 -g -std=gnu99 -pthread -Wall
+
+# call32_from_64 in thunks.S uses absolute addresses.
+ifeq ($(CAN_BUILD_WITH_NOPIE),1)
+CFLAGS += -no-pie
+endif
 
 define gen-target-rule-32
 $(1) $(1)_32: $(OUTPUT)/$(1)_32
diff --git a/tools/testing/selftests/x86/trivial_program.c b/tools/testing/selftests/x86/trivial_program.c
new file mode 100644
index 000000000000..46a447163b93
--- /dev/null
+++ b/tools/testing/selftests/x86/trivial_program.c
@@ -0,0 +1,10 @@
+/* Trivial program to check that compilation with certain flags is working. */
+
+#include <stdio.h>
+
+int
+main(void)
+{
+	puts("");
+	return 0;
+}
-- 
2.14.3

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From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-arch-owner@vger.kernel.org>
Received: from mx1.redhat.com ([209.132.183.28]:37684 "EHLO mx1.redhat.com"
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        id S1750898AbeEBMOe (ORCPT <rfc822;linux-arch@vger.kernel.org>);
        Wed, 2 May 2018 08:14:34 -0400
From: Florian Weimer <fweimer@redhat.com>
Date: Wed, 2 May 2018 14:10:32 +0200
Subject: [PATCH] selftests/x86: Detect -no-pie availability
Message-Id: <20180502121433.7F874401F1BF7@oldenburg.str.redhat.com>
Sender: linux-arch-owner@vger.kernel.org
List-ID: <linux-arch.vger.kernel.org>
To: linux-x86_64@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-arch@vger.kernel.org, x86@kernel.org
Cc: rdunlap@infradead.org, shuah@kernel.org

Some toolchains need -no-pie to build all tests, others do not support
the -no-pie flag at all.  Therefore, add another test for the
availability of the flag.

This amends commit 3346a6a4e5ba8c040360f753b26938cec31a4bdc
("selftests: x86: sysret_ss_attrs doesn't build on a PIE build").

Signed-off-by: Florian Weimer <fweimer@redhat.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
---
 tools/testing/selftests/x86/Makefile          |  8 +++++++-
 tools/testing/selftests/x86/trivial_program.c | 10 ++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)
 create mode 100644 tools/testing/selftests/x86/trivial_program.c

diff --git a/tools/testing/selftests/x86/Makefile b/tools/testing/selftests/x86/Makefile
index d744991c0f4f..94c89261a236 100644
--- a/tools/testing/selftests/x86/Makefile
+++ b/tools/testing/selftests/x86/Makefile
@@ -8,6 +8,7 @@ include ../lib.mk
 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)
 
 TARGETS_C_BOTHBITS := single_step_syscall sysret_ss_attrs syscall_nt test_mremap_vdso \
 			check_initial_reg_state sigreturn iopl mpx-mini-test ioperm \
@@ -31,7 +32,12 @@ BINARIES_64 := $(TARGETS_C_64BIT_ALL:%=%_64)
 BINARIES_32 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_32))
 BINARIES_64 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_64))
 
-CFLAGS := -O2 -g -std=gnu99 -pthread -Wall -no-pie
+CFLAGS := -O2 -g -std=gnu99 -pthread -Wall
+
+# call32_from_64 in thunks.S uses absolute addresses.
+ifeq ($(CAN_BUILD_WITH_NOPIE),1)
+CFLAGS += -no-pie
+endif
 
 define gen-target-rule-32
 $(1) $(1)_32: $(OUTPUT)/$(1)_32
diff --git a/tools/testing/selftests/x86/trivial_program.c b/tools/testing/selftests/x86/trivial_program.c
new file mode 100644
index 000000000000..46a447163b93
--- /dev/null
+++ b/tools/testing/selftests/x86/trivial_program.c
@@ -0,0 +1,10 @@
+/* Trivial program to check that compilation with certain flags is working. */
+
+#include <stdio.h>
+
+int
+main(void)
+{
+	puts("");
+	return 0;
+}
-- 
2.14.3