From: Sami Tolvanen <samitolvanen@google.com> To: Masahiro Yamada <masahiroy@kernel.org>, Will Deacon <will@kernel.org>, Steven Rostedt <rostedt@goodmis.org> Cc: Peter Zijlstra <peterz@infradead.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, "Paul E. McKenney" <paulmck@kernel.org>, Kees Cook <keescook@chromium.org>, Nick Desaulniers <ndesaulniers@google.com>, clang-built-linux@googlegroups.com, kernel-hardening@lists.openwall.com, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, x86@kernel.org, Sami Tolvanen <samitolvanen@google.com> Subject: [PATCH v4 12/29] kbuild: lto: fix module versioning Date: Tue, 29 Sep 2020 14:46:14 -0700 [thread overview] Message-ID: <20200929214631.3516445-13-samitolvanen@google.com> (raw) In-Reply-To: <20200929214631.3516445-1-samitolvanen@google.com> With CONFIG_MODVERSIONS, version information is linked into each compilation unit that exports symbols. With LTO, we cannot use this method as all C code is compiled into LLVM bitcode instead. This change collects symbol versions into .symversions files and merges them in link-vmlinux.sh where they are all linked into vmlinux.o at the same time. Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> --- .gitignore | 1 + Makefile | 3 ++- arch/Kconfig | 1 - scripts/Makefile.build | 33 +++++++++++++++++++++++++++++++-- scripts/Makefile.modpost | 6 +++++- scripts/link-vmlinux.sh | 25 ++++++++++++++++++++++++- 6 files changed, 63 insertions(+), 6 deletions(-) diff --git a/.gitignore b/.gitignore index 162bd2b67bdf..06e76dc39ffe 100644 --- a/.gitignore +++ b/.gitignore @@ -41,6 +41,7 @@ *.so.dbg *.su *.symtypes +*.symversions *.tab.[ch] *.tar *.xz diff --git a/Makefile b/Makefile index 8e2eaf6452ba..23cdb475c445 100644 --- a/Makefile +++ b/Makefile @@ -1827,7 +1827,8 @@ clean: $(clean-dirs) -o -name '.tmp_*.o.*' \ -o -name '*.c.[012]*.*' \ -o -name '*.ll' \ - -o -name '*.gcno' \) -type f -print | xargs rm -f + -o -name '*.gcno' \ + -o -name '*.*.symversions' \) -type f -print | xargs rm -f # Generate tags for editors # --------------------------------------------------------------------------- diff --git a/arch/Kconfig b/arch/Kconfig index 0742ec643d79..520e900efc75 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -603,7 +603,6 @@ config LTO_CLANG depends on !FTRACE_MCOUNT_RECORD depends on !KASAN depends on !GCOV_KERNEL - depends on !MODVERSIONS select LTO help This option enables Clang's Link Time Optimization (LTO), which diff --git a/scripts/Makefile.build b/scripts/Makefile.build index ed74b2f986f7..eae2f5386a03 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -166,6 +166,15 @@ ifdef CONFIG_MODVERSIONS # the actual value of the checksum generated by genksyms # o remove .tmp_<file>.o to <file>.o +ifdef CONFIG_LTO_CLANG +# Generate .o.symversions files for each .o with exported symbols, and link these +# to the kernel and/or modules at the end. +cmd_modversions_c = \ + if $(NM) $@ 2>/dev/null | grep -q __ksymtab; then \ + $(call cmd_gensymtypes_c,$(KBUILD_SYMTYPES),$(@:.o=.symtypes)) \ + > $@.symversions; \ + fi; +else cmd_modversions_c = \ if $(OBJDUMP) -h $@ | grep -q __ksymtab; then \ $(call cmd_gensymtypes_c,$(KBUILD_SYMTYPES),$(@:.o=.symtypes)) \ @@ -177,6 +186,7 @@ cmd_modversions_c = \ rm -f $(@D)/.tmp_$(@F:.o=.ver); \ fi endif +endif ifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT # compiler will not generate __mcount_loc use recordmcount or recordmcount.pl @@ -390,6 +400,18 @@ $(obj)/%.asn1.c $(obj)/%.asn1.h: $(src)/%.asn1 $(objtree)/scripts/asn1_compiler $(subdir-builtin): $(obj)/%/built-in.a: $(obj)/% ; $(subdir-modorder): $(obj)/%/modules.order: $(obj)/% ; +# combine symversions for later processing +quiet_cmd_update_lto_symversions = SYMVER $@ +ifeq ($(CONFIG_LTO_CLANG) $(CONFIG_MODVERSIONS),y y) + cmd_update_lto_symversions = \ + rm -f $@.symversions \ + $(foreach n, $(filter-out FORCE,$^), \ + $(if $(wildcard $(n).symversions), \ + ; cat $(n).symversions >> $@.symversions)) +else + cmd_update_lto_symversions = echo >/dev/null +endif + # # Rule to compile a set of .o files into one .a file (without symbol table) # @@ -397,8 +419,11 @@ $(subdir-modorder): $(obj)/%/modules.order: $(obj)/% ; quiet_cmd_ar_builtin = AR $@ cmd_ar_builtin = rm -f $@; $(AR) cDPrST $@ $(real-prereqs) +quiet_cmd_ar_and_symver = AR $@ + cmd_ar_and_symver = $(cmd_update_lto_symversions); $(cmd_ar_builtin) + $(obj)/built-in.a: $(real-obj-y) FORCE - $(call if_changed,ar_builtin) + $(call if_changed,ar_and_symver) # # Rule to create modules.order file @@ -418,8 +443,11 @@ $(obj)/modules.order: $(obj-m) FORCE # # Rule to compile a set of .o files into one .a file (with symbol table) # +quiet_cmd_ar_lib = AR $@ + cmd_ar_lib = $(cmd_update_lto_symversions); $(cmd_ar) + $(obj)/lib.a: $(lib-y) FORCE - $(call if_changed,ar) + $(call if_changed,ar_lib) # NOTE: # Do not replace $(filter %.o,^) with $(real-prereqs). When a single object @@ -428,6 +456,7 @@ $(obj)/lib.a: $(lib-y) FORCE ifdef CONFIG_LTO_CLANG quiet_cmd_link_multi-m = AR [M] $@ cmd_link_multi-m = \ + $(cmd_update_lto_symversions); \ rm -f $@; \ $(AR) cDPrsT $@ $(filter %.o,$^) else diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost index 66e0c256403c..753725b88683 100644 --- a/scripts/Makefile.modpost +++ b/scripts/Makefile.modpost @@ -108,7 +108,11 @@ ifdef CONFIG_LTO_CLANG prelink-ext = .lto quiet_cmd_cc_lto_link_modules = LTO [M] $@ -cmd_cc_lto_link_modules = $(LD) $(ld_flags) -r -o $@ --whole-archive $^ +cmd_cc_lto_link_modules = \ + $(LD) $(ld_flags) -r -o $@ \ + $(shell [ -s $(@:.lto.o=.o.symversions) ] && \ + echo -T $(@:.lto.o=.o.symversions)) \ + --whole-archive $^ %.lto.o: %.o $(call if_changed,cc_lto_link_modules) diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh index ebb9f912aab6..3e99a19b9195 100755 --- a/scripts/link-vmlinux.sh +++ b/scripts/link-vmlinux.sh @@ -43,11 +43,28 @@ info() fi } +# If CONFIG_LTO_CLANG is selected, collect generated symbol versions into +# .tmp_symversions.lds +gen_symversions() +{ + info GEN .tmp_symversions.lds + rm -f .tmp_symversions.lds + + for a in ${KBUILD_VMLINUX_OBJS} ${KBUILD_VMLINUX_LIBS}; do + for o in $(${AR} t $a 2>/dev/null); do + if [ -f ${o}.symversions ]; then + cat ${o}.symversions >> .tmp_symversions.lds + fi + done + done +} + # Link of vmlinux.o used for section mismatch analysis # ${1} output file modpost_link() { local objects + local lds="" objects="--whole-archive \ ${KBUILD_VMLINUX_OBJS} \ @@ -57,6 +74,11 @@ modpost_link() --end-group" if [ -n "${CONFIG_LTO_CLANG}" ]; then + if [ -n "${CONFIG_MODVERSIONS}" ]; then + gen_symversions + lds="${lds} -T .tmp_symversions.lds" + fi + # This might take a while, so indicate that we're doing # an LTO link info LTO ${1} @@ -64,7 +86,7 @@ modpost_link() info LD ${1} fi - ${LD} ${KBUILD_LDFLAGS} -r -o ${1} ${objects} + ${LD} ${KBUILD_LDFLAGS} -r -o ${1} ${lds} ${objects} } objtool_link() @@ -242,6 +264,7 @@ cleanup() { rm -f .btf.* rm -f .tmp_System.map + rm -f .tmp_symversions.lds rm -f .tmp_vmlinux* rm -f System.map rm -f vmlinux -- 2.28.0.709.gb0816b6eb0-goog
WARNING: multiple messages have this Message-ID (diff)
From: Sami Tolvanen <samitolvanen@google.com> To: Masahiro Yamada <masahiroy@kernel.org>, Will Deacon <will@kernel.org>, Steven Rostedt <rostedt@goodmis.org> Cc: linux-arch@vger.kernel.org, x86@kernel.org, Kees Cook <keescook@chromium.org>, "Paul E. McKenney" <paulmck@kernel.org>, kernel-hardening@lists.openwall.com, Peter Zijlstra <peterz@infradead.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, linux-kbuild@vger.kernel.org, Nick Desaulniers <ndesaulniers@google.com>, linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com, Sami Tolvanen <samitolvanen@google.com>, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v4 12/29] kbuild: lto: fix module versioning Date: Tue, 29 Sep 2020 14:46:14 -0700 [thread overview] Message-ID: <20200929214631.3516445-13-samitolvanen@google.com> (raw) In-Reply-To: <20200929214631.3516445-1-samitolvanen@google.com> With CONFIG_MODVERSIONS, version information is linked into each compilation unit that exports symbols. With LTO, we cannot use this method as all C code is compiled into LLVM bitcode instead. This change collects symbol versions into .symversions files and merges them in link-vmlinux.sh where they are all linked into vmlinux.o at the same time. Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> --- .gitignore | 1 + Makefile | 3 ++- arch/Kconfig | 1 - scripts/Makefile.build | 33 +++++++++++++++++++++++++++++++-- scripts/Makefile.modpost | 6 +++++- scripts/link-vmlinux.sh | 25 ++++++++++++++++++++++++- 6 files changed, 63 insertions(+), 6 deletions(-) diff --git a/.gitignore b/.gitignore index 162bd2b67bdf..06e76dc39ffe 100644 --- a/.gitignore +++ b/.gitignore @@ -41,6 +41,7 @@ *.so.dbg *.su *.symtypes +*.symversions *.tab.[ch] *.tar *.xz diff --git a/Makefile b/Makefile index 8e2eaf6452ba..23cdb475c445 100644 --- a/Makefile +++ b/Makefile @@ -1827,7 +1827,8 @@ clean: $(clean-dirs) -o -name '.tmp_*.o.*' \ -o -name '*.c.[012]*.*' \ -o -name '*.ll' \ - -o -name '*.gcno' \) -type f -print | xargs rm -f + -o -name '*.gcno' \ + -o -name '*.*.symversions' \) -type f -print | xargs rm -f # Generate tags for editors # --------------------------------------------------------------------------- diff --git a/arch/Kconfig b/arch/Kconfig index 0742ec643d79..520e900efc75 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -603,7 +603,6 @@ config LTO_CLANG depends on !FTRACE_MCOUNT_RECORD depends on !KASAN depends on !GCOV_KERNEL - depends on !MODVERSIONS select LTO help This option enables Clang's Link Time Optimization (LTO), which diff --git a/scripts/Makefile.build b/scripts/Makefile.build index ed74b2f986f7..eae2f5386a03 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -166,6 +166,15 @@ ifdef CONFIG_MODVERSIONS # the actual value of the checksum generated by genksyms # o remove .tmp_<file>.o to <file>.o +ifdef CONFIG_LTO_CLANG +# Generate .o.symversions files for each .o with exported symbols, and link these +# to the kernel and/or modules at the end. +cmd_modversions_c = \ + if $(NM) $@ 2>/dev/null | grep -q __ksymtab; then \ + $(call cmd_gensymtypes_c,$(KBUILD_SYMTYPES),$(@:.o=.symtypes)) \ + > $@.symversions; \ + fi; +else cmd_modversions_c = \ if $(OBJDUMP) -h $@ | grep -q __ksymtab; then \ $(call cmd_gensymtypes_c,$(KBUILD_SYMTYPES),$(@:.o=.symtypes)) \ @@ -177,6 +186,7 @@ cmd_modversions_c = \ rm -f $(@D)/.tmp_$(@F:.o=.ver); \ fi endif +endif ifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT # compiler will not generate __mcount_loc use recordmcount or recordmcount.pl @@ -390,6 +400,18 @@ $(obj)/%.asn1.c $(obj)/%.asn1.h: $(src)/%.asn1 $(objtree)/scripts/asn1_compiler $(subdir-builtin): $(obj)/%/built-in.a: $(obj)/% ; $(subdir-modorder): $(obj)/%/modules.order: $(obj)/% ; +# combine symversions for later processing +quiet_cmd_update_lto_symversions = SYMVER $@ +ifeq ($(CONFIG_LTO_CLANG) $(CONFIG_MODVERSIONS),y y) + cmd_update_lto_symversions = \ + rm -f $@.symversions \ + $(foreach n, $(filter-out FORCE,$^), \ + $(if $(wildcard $(n).symversions), \ + ; cat $(n).symversions >> $@.symversions)) +else + cmd_update_lto_symversions = echo >/dev/null +endif + # # Rule to compile a set of .o files into one .a file (without symbol table) # @@ -397,8 +419,11 @@ $(subdir-modorder): $(obj)/%/modules.order: $(obj)/% ; quiet_cmd_ar_builtin = AR $@ cmd_ar_builtin = rm -f $@; $(AR) cDPrST $@ $(real-prereqs) +quiet_cmd_ar_and_symver = AR $@ + cmd_ar_and_symver = $(cmd_update_lto_symversions); $(cmd_ar_builtin) + $(obj)/built-in.a: $(real-obj-y) FORCE - $(call if_changed,ar_builtin) + $(call if_changed,ar_and_symver) # # Rule to create modules.order file @@ -418,8 +443,11 @@ $(obj)/modules.order: $(obj-m) FORCE # # Rule to compile a set of .o files into one .a file (with symbol table) # +quiet_cmd_ar_lib = AR $@ + cmd_ar_lib = $(cmd_update_lto_symversions); $(cmd_ar) + $(obj)/lib.a: $(lib-y) FORCE - $(call if_changed,ar) + $(call if_changed,ar_lib) # NOTE: # Do not replace $(filter %.o,^) with $(real-prereqs). When a single object @@ -428,6 +456,7 @@ $(obj)/lib.a: $(lib-y) FORCE ifdef CONFIG_LTO_CLANG quiet_cmd_link_multi-m = AR [M] $@ cmd_link_multi-m = \ + $(cmd_update_lto_symversions); \ rm -f $@; \ $(AR) cDPrsT $@ $(filter %.o,$^) else diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost index 66e0c256403c..753725b88683 100644 --- a/scripts/Makefile.modpost +++ b/scripts/Makefile.modpost @@ -108,7 +108,11 @@ ifdef CONFIG_LTO_CLANG prelink-ext = .lto quiet_cmd_cc_lto_link_modules = LTO [M] $@ -cmd_cc_lto_link_modules = $(LD) $(ld_flags) -r -o $@ --whole-archive $^ +cmd_cc_lto_link_modules = \ + $(LD) $(ld_flags) -r -o $@ \ + $(shell [ -s $(@:.lto.o=.o.symversions) ] && \ + echo -T $(@:.lto.o=.o.symversions)) \ + --whole-archive $^ %.lto.o: %.o $(call if_changed,cc_lto_link_modules) diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh index ebb9f912aab6..3e99a19b9195 100755 --- a/scripts/link-vmlinux.sh +++ b/scripts/link-vmlinux.sh @@ -43,11 +43,28 @@ info() fi } +# If CONFIG_LTO_CLANG is selected, collect generated symbol versions into +# .tmp_symversions.lds +gen_symversions() +{ + info GEN .tmp_symversions.lds + rm -f .tmp_symversions.lds + + for a in ${KBUILD_VMLINUX_OBJS} ${KBUILD_VMLINUX_LIBS}; do + for o in $(${AR} t $a 2>/dev/null); do + if [ -f ${o}.symversions ]; then + cat ${o}.symversions >> .tmp_symversions.lds + fi + done + done +} + # Link of vmlinux.o used for section mismatch analysis # ${1} output file modpost_link() { local objects + local lds="" objects="--whole-archive \ ${KBUILD_VMLINUX_OBJS} \ @@ -57,6 +74,11 @@ modpost_link() --end-group" if [ -n "${CONFIG_LTO_CLANG}" ]; then + if [ -n "${CONFIG_MODVERSIONS}" ]; then + gen_symversions + lds="${lds} -T .tmp_symversions.lds" + fi + # This might take a while, so indicate that we're doing # an LTO link info LTO ${1} @@ -64,7 +86,7 @@ modpost_link() info LD ${1} fi - ${LD} ${KBUILD_LDFLAGS} -r -o ${1} ${objects} + ${LD} ${KBUILD_LDFLAGS} -r -o ${1} ${lds} ${objects} } objtool_link() @@ -242,6 +264,7 @@ cleanup() { rm -f .btf.* rm -f .tmp_System.map + rm -f .tmp_symversions.lds rm -f .tmp_vmlinux* rm -f System.map rm -f vmlinux -- 2.28.0.709.gb0816b6eb0-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-09-29 21:47 UTC|newest] Thread overview: 120+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-09-29 21:46 [PATCH v4 00/29] Add support for Clang LTO Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 01/29] RAS/CEC: Fix cec_init() prototype Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 02/29] x86/asm: Replace __force_order with memory clobber Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 03/29] kbuild: preprocess module linker script Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 04/29] objtool: Add a pass for generating __mcount_loc Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-10-01 13:17 ` Miroslav Benes 2020-10-01 13:17 ` Miroslav Benes 2020-10-01 13:17 ` Miroslav Benes 2020-10-01 13:36 ` Peter Zijlstra 2020-10-01 13:36 ` Peter Zijlstra 2020-10-02 14:13 ` Josh Poimboeuf 2020-10-02 14:13 ` Josh Poimboeuf 2020-10-05 7:10 ` Miroslav Benes 2020-10-05 7:10 ` Miroslav Benes 2020-10-05 7:10 ` Miroslav Benes 2020-09-29 21:46 ` [PATCH v4 05/29] objtool: Don't autodetect vmlinux.o Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 06/29] tracing: move function tracer options to Kconfig Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-30 0:12 ` Steven Rostedt 2020-09-30 0:12 ` Steven Rostedt 2020-09-30 16:05 ` Sami Tolvanen 2020-09-30 16:05 ` Sami Tolvanen 2020-09-30 16:05 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 07/29] tracing: add support for objtool mcount Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 08/29] x86, build: use " Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 09/29] arm64: disable recordmcount with DYNAMIC_FTRACE_WITH_REGS Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-30 9:58 ` Mark Rutland 2020-09-30 9:58 ` Mark Rutland 2020-09-30 17:10 ` Sami Tolvanen 2020-09-30 17:10 ` Sami Tolvanen 2020-09-30 17:10 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 10/29] treewide: remove DISABLE_LTO Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-30 20:45 ` Kees Cook 2020-09-30 20:45 ` Kees Cook 2020-09-29 21:46 ` [PATCH v4 11/29] kbuild: add support for Clang LTO Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen [this message] 2020-09-29 21:46 ` [PATCH v4 12/29] kbuild: lto: fix module versioning Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 13/29] kbuild: lto: postpone objtool Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 14/29] kbuild: lto: limit inlining Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 15/29] kbuild: lto: merge module sections Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 16/29] kbuild: lto: remove duplicate dependencies from .mod files Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 17/29] init: lto: ensure initcall ordering Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 18/29] init: lto: fix PREL32 relocations Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 19/29] PCI: Fix PREL32 relocations for LTO Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 20/29] modpost: lto: strip .lto from module names Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 21/29] scripts/mod: disable LTO for empty.c Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 22/29] efi/libstub: disable LTO Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 23/29] drivers/misc/lkdtm: disable LTO for rodata.o Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 24/29] arm64: vdso: disable LTO Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 25/29] KVM: arm64: disable LTO for the nVHE directory Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 26/29] arm64: allow LTO_CLANG and THINLTO to be selected Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 27/29] x86, vdso: disable LTO only for vDSO Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 28/29] x86, cpu: disable LTO for cpu.c Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` [PATCH v4 29/29] x86, build: allow LTO_CLANG and THINLTO to be selected Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-29 21:46 ` Sami Tolvanen 2020-09-30 21:10 ` [PATCH v4 00/29] Add support for Clang LTO Kees Cook 2020-09-30 21:10 ` Kees Cook 2020-09-30 21:58 ` Nick Desaulniers 2020-09-30 21:58 ` Nick Desaulniers 2020-09-30 21:58 ` Nick Desaulniers 2020-09-30 22:12 ` Sami Tolvanen 2020-09-30 22:12 ` Sami Tolvanen 2020-09-30 22:12 ` Sami Tolvanen
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