Subject: linux-next: manual merge of the akpm-current tree with the hmm tree

From: Stephen Rothwell <[email-masked]>
Date: Fri, 8 May 2020 20:22:17 +1000

Hi all,

Today's linux-next merge of the akpm-current tree got a conflict in:

  tools/testing/selftests/vm/Makefile

between commit:

  b0d449922eb8 ("mm/hmm/test: add selftests for HMM")

from the hmm tree and commit:

  3a07caa68f66 ("selftests: vm: pkeys: fix multilib builds for x86")

from the akpm-current tree.

I fixed it up (see below) and can carry the fix as necessary. This
is now fixed as far as linux-next is concerned, but any non trivial
conflicts should be mentioned to your upstream maintainer when your tree
is submitted for merging.  You may also want to consider cooperating
with the maintainer of the conflicting tree to minimise any particularly
complex conflicts.

-- 
Cheers,
Stephen Rothwell

diff --cc tools/testing/selftests/vm/Makefile
index c6eb5305a0f6,d7eae41be628..000000000000
--- a/tools/testing/selftests/vm/Makefile
+++ b/tools/testing/selftests/vm/Makefile
@@@ -34,8 -58,55 +59,57 @@@ TEST_FILES := test_vmalloc.s
  KSFT_KHDR_INSTALL := 1
  include ../lib.mk
  
+ ifeq ($(ARCH),x86_64)
+ BINARIES_32 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_32))
+ BINARIES_64 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_64))
+ 
+ define gen-target-rule-32
+ $(1) $(1)_32: $(OUTPUT)/$(1)_32
+ .PHONY: $(1) $(1)_32
+ endef
+ 
+ define gen-target-rule-64
+ $(1) $(1)_64: $(OUTPUT)/$(1)_64
+ .PHONY: $(1) $(1)_64
+ endef
+ 
+ ifeq ($(CAN_BUILD_I386),1)
+ $(BINARIES_32): CFLAGS += -m32
+ $(BINARIES_32): LDLIBS += -lrt -ldl -lm
+ $(BINARIES_32): %_32: %.c
+ 	$(CC) $(CFLAGS) $(EXTRA_CFLAGS) $(notdir $^) $(LDLIBS) -o $@
+ $(foreach t,$(TARGETS),$(eval $(call gen-target-rule-32,$(t))))
+ endif
+ 
+ ifeq ($(CAN_BUILD_X86_64),1)
+ $(BINARIES_64): CFLAGS += -m64
+ $(BINARIES_64): LDLIBS += -lrt -ldl
+ $(BINARIES_64): %_64: %.c
+ 	$(CC) $(CFLAGS) $(EXTRA_CFLAGS) $(notdir $^) $(LDLIBS) -o $@
+ $(foreach t,$(TARGETS),$(eval $(call gen-target-rule-64,$(t))))
+ endif
+ 
+ # 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
+ endif
+ 
 +$(OUTPUT)/hmm-tests: LDLIBS += -lhugetlbfs -lpthread
 +
  $(OUTPUT)/userfaultfd: LDLIBS += -lpthread
  
  $(OUTPUT)/mlock-random-test: LDLIBS += -lcap