summaryrefslogtreecommitdiff
path: root/arch/x86/purgatory
diff options
context:
space:
mode:
authorIngo Molnar <mingo@kernel.org>2020-03-21 11:23:40 +0300
committerIngo Molnar <mingo@kernel.org>2020-03-21 11:24:41 +0300
commita4654e9bde4ecedb4921e6c8fe2088114bdff1b3 (patch)
tree1b9970b520d7bc7176cc9460fe67f210be5ea181 /arch/x86/purgatory
parent7add7875a8eb4ffe5eddaf8a11e409c9e1b6e3f3 (diff)
parente4160b2e4b02377c67f8ecd05786811598f39acd (diff)
downloadlinux-a4654e9bde4ecedb4921e6c8fe2088114bdff1b3.tar.xz
Merge branch 'x86/kdump' into locking/kcsan, to resolve conflicts
Conflicts: arch/x86/purgatory/Makefile Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/purgatory')
-rw-r--r--arch/x86/purgatory/.gitignore1
-rw-r--r--arch/x86/purgatory/Makefile21
2 files changed, 16 insertions, 6 deletions
diff --git a/arch/x86/purgatory/.gitignore b/arch/x86/purgatory/.gitignore
new file mode 100644
index 000000000000..d2be1500671d
--- /dev/null
+++ b/arch/x86/purgatory/.gitignore
@@ -0,0 +1 @@
+purgatory.chk
diff --git a/arch/x86/purgatory/Makefile b/arch/x86/purgatory/Makefile
index 69379bce9574..b04e6e72a592 100644
--- a/arch/x86/purgatory/Makefile
+++ b/arch/x86/purgatory/Makefile
@@ -14,11 +14,17 @@ $(obj)/sha256.o: $(srctree)/lib/crypto/sha256.c FORCE
CFLAGS_sha256.o := -D__DISABLE_EXPORTS
-LDFLAGS_purgatory.ro := -e purgatory_start -r --no-undefined -nostdlib -z nodefaultlib
-targets += purgatory.ro
-
-# Sanitizer runtimes are unavailable and cannot be linked here.
+# When linking purgatory.ro with -r unresolved symbols are not checked,
+# also link a purgatory.chk binary without -r to check for unresolved symbols.
+PURGATORY_LDFLAGS := -e purgatory_start -nostdlib -z nodefaultlib
+LDFLAGS_purgatory.ro := -r $(PURGATORY_LDFLAGS)
+LDFLAGS_purgatory.chk := $(PURGATORY_LDFLAGS)
+targets += purgatory.ro purgatory.chk
+
+# Sanitizer, etc. runtimes are unavailable and cannot be linked here.
+GCOV_PROFILE := n
KASAN_SANITIZE := n
+UBSAN_SANITIZE := n
KCSAN_SANITIZE := n
KCOV_INSTRUMENT := n
@@ -27,7 +33,7 @@ KCOV_INSTRUMENT := n
PURGATORY_CFLAGS_REMOVE := -mcmodel=kernel
PURGATORY_CFLAGS := -mcmodel=large -ffreestanding -fno-zero-initialized-in-bss
-PURGATORY_CFLAGS += $(DISABLE_STACKLEAK_PLUGIN)
+PURGATORY_CFLAGS += $(DISABLE_STACKLEAK_PLUGIN) -DDISABLE_BRANCH_PROFILING
# Default KBUILD_CFLAGS can have -pg option set when FTRACE is enabled. That
# in turn leaves some undefined symbols like __fentry__ in purgatory and not
@@ -60,12 +66,15 @@ CFLAGS_string.o += $(PURGATORY_CFLAGS)
$(obj)/purgatory.ro: $(PURGATORY_OBJS) FORCE
$(call if_changed,ld)
+$(obj)/purgatory.chk: $(obj)/purgatory.ro FORCE
+ $(call if_changed,ld)
+
targets += kexec-purgatory.c
quiet_cmd_bin2c = BIN2C $@
cmd_bin2c = $(objtree)/scripts/bin2c kexec_purgatory < $< > $@
-$(obj)/kexec-purgatory.c: $(obj)/purgatory.ro FORCE
+$(obj)/kexec-purgatory.c: $(obj)/purgatory.ro $(obj)/purgatory.chk FORCE
$(call if_changed,bin2c)
obj-$(CONFIG_KEXEC_FILE) += kexec-purgatory.o