Merge branch 'linus' into x86/asm, to resolve conflicts

Conflicts:
	tools/testing/selftests/x86/Makefile
	tools/testing/selftests/x86/run_x86_tests.sh

diff --cc tools/testing/selftests/x86/Makefile
index 9309097,5bdb781..59d364a
--- 1/tools/testing/selftests/x86/Makefile
--- 2/tools/testing/selftests/x86/Makefile
+++ b/tools/testing/selftests/x86/Makefile
@@@ -1,6 -1,10 +1,10 @@@
- .PHONY: all all_32 all_64 check_build32 clean run_tests
+ all:
+ 
+ include ../lib.mk
+ 
+ .PHONY: all all_32 all_64 warn_32bit_failure clean
  
 -TARGETS_C_BOTHBITS := sigreturn single_step_syscall
 +TARGETS_C_BOTHBITS := sigreturn single_step_syscall sysret_ss_attrs
  
  BINARIES_32 := $(TARGETS_C_BOTHBITS:%=%_32)
  BINARIES_64 := $(TARGETS_C_BOTHBITS:%=%_64)
@@@ -33,19 -38,20 +38,23 @@@ $(TARGETS_C_BOTHBITS:%=%_32): %_32: %.
  $(TARGETS_C_BOTHBITS:%=%_64): %_64: %.c
        $(CC) -m64 -o $@ $(CFLAGS) $(EXTRA_CFLAGS) $^ -lrt -ldl
  
- check_build32:
-       @if ! $(CC) -m32 -o /dev/null trivial_32bit_program.c; then     \
-         echo "Warning: you seem to have a broken 32-bit build" 2>&1;  \
-         echo "environment.  If you are using a Debian-like";          \
-         echo " distribution, try:";                                   \
-         echo "";                                                      \
-         echo "  apt-get install gcc-multilib libc6-i386 libc6-dev-i386"; \
-         echo "";                                                      \
-         echo "If you are using a Fedora-like distribution, try:";     \
-         echo "";                                                      \
-         echo "  yum install glibc-devel.*i686";                       \
-         exit 1;                                                       \
-       fi
+ # x86_64 users should be encouraged to install 32-bit libraries
+ ifeq ($(CAN_BUILD_I386)$(CAN_BUILD_X86_64),01)
+ all: warn_32bit_failure
+ 
+ warn_32bit_failure:
+       @echo "Warning: you seem to have a broken 32-bit build" 2>&1;   \
+       echo "environment.  This will reduce test coverage of 64-bit" 2>&1; \
+       echo "kernels.  If you are using a Debian-like distribution," 2>&1; \
+       echo "try:"; 2>&1; \
+       echo "";                                                        \
+       echo "  apt-get install gcc-multilib libc6-i386 libc6-dev-i386"; \
+       echo "";                                                        \
+       echo "If you are using a Fedora-like distribution, try:";       \
+       echo "";                                                        \
+       echo "  yum install glibc-devel.*i686";                         \
+       exit 0;
+ endif
 +
 +# Some tests have additional dependencies.
 +sysret_ss_attrs_64: thunks.S