From: Sami Tolvanen <samitolvanen@google.com> To: Masahiro Yamada <masahiroy@kernel.org>, Will Deacon <will@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org>, Steven Rostedt <rostedt@goodmis.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 v3 13/30] kbuild: lto: postpone objtool Date: Fri, 18 Sep 2020 13:14:19 -0700 [thread overview] Message-ID: <20200918201436.2932360-14-samitolvanen@google.com> (raw) In-Reply-To: <20200918201436.2932360-1-samitolvanen@google.com> With LTO, LLVM bitcode won't be compiled into native code until modpost_link, or modfinal for modules. This change postpones calls to objtool until after these steps, and moves objtool_args to Makefile.lib, so the arguments can be reused in Makefile.modfinal. Signed-off-by: Sami Tolvanen <samitolvanen@google.com> --- arch/Kconfig | 2 +- scripts/Makefile.build | 22 ++-------------------- scripts/Makefile.lib | 11 +++++++++++ scripts/Makefile.modfinal | 19 ++++++++++++++++--- scripts/link-vmlinux.sh | 23 ++++++++++++++++++++++- 5 files changed, 52 insertions(+), 25 deletions(-) diff --git a/arch/Kconfig b/arch/Kconfig index 520e900efc75..727be15ba19e 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -600,7 +600,7 @@ config LTO_CLANG depends on $(success,$(NM) --help | head -n 1 | grep -qi llvm) depends on $(success,$(AR) --help | head -n 1 | grep -qi llvm) depends on ARCH_SUPPORTS_LTO_CLANG - depends on !FTRACE_MCOUNT_RECORD + depends on HAVE_OBJTOOL_MCOUNT || !(X86_64 && DYNAMIC_FTRACE) depends on !KASAN depends on !GCOV_KERNEL select LTO diff --git a/scripts/Makefile.build b/scripts/Makefile.build index 44b6d964bcad..541dbe791743 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -218,30 +218,11 @@ cmd_record_mcount = $(if $(findstring $(strip $(CC_FLAGS_FTRACE)),$(_c_flags)), endif # USE_RECORDMCOUNT ifdef CONFIG_STACK_VALIDATION +ifndef CONFIG_LTO_CLANG ifneq ($(SKIP_STACK_VALIDATION),1) __objtool_obj := $(objtree)/tools/objtool/objtool -objtool_args = $(if $(CONFIG_UNWINDER_ORC),orc generate,check) - -objtool_args += $(if $(part-of-module), --module,) - -ifndef CONFIG_FRAME_POINTER -objtool_args += --no-fp -endif -ifdef CONFIG_GCOV_KERNEL -objtool_args += --no-unreachable -endif -ifdef CONFIG_RETPOLINE - objtool_args += --retpoline -endif -ifdef CONFIG_X86_SMAP - objtool_args += --uaccess -endif -ifdef USE_OBJTOOL_MCOUNT - objtool_args += --mcount -endif - # 'OBJECT_FILES_NON_STANDARD := y': skip objtool checking for a directory # 'OBJECT_FILES_NON_STANDARD_foo.o := 'y': skip objtool checking for a file # 'OBJECT_FILES_NON_STANDARD_foo.o := 'n': override directory skip for a file @@ -253,6 +234,7 @@ objtool_obj = $(if $(patsubst y%,, \ $(__objtool_obj)) endif # SKIP_STACK_VALIDATION +endif # CONFIG_LTO_CLANG endif # CONFIG_STACK_VALIDATION # Rebuild all objects when objtool changes, or is enabled/disabled. diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 3d599716940c..745d88172bc7 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -216,6 +216,17 @@ dtc_cpp_flags = -Wp,-MMD,$(depfile).pre.tmp -nostdinc \ $(addprefix -I,$(DTC_INCLUDE)) \ -undef -D__DTS__ +# Objtool arguments are also needed for modfinal with LTO, so we define +# then here to avoid duplication. +objtool_args = \ + $(if $(CONFIG_UNWINDER_ORC),orc generate,check) \ + $(if $(part-of-module), --module,) \ + $(if $(CONFIG_FRAME_POINTER), --no-fp,) \ + $(if $(CONFIG_GCOV_KERNEL), --no-unreachable,) \ + $(if $(CONFIG_RETPOLINE), --retpoline,) \ + $(if $(CONFIG_X86_SMAP), --uaccess,) \ + $(if $(USE_OBJTOOL_MCOUNT), --mcount,) + # Useful for describing the dependency of composite objects # Usage: # $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add) diff --git a/scripts/Makefile.modfinal b/scripts/Makefile.modfinal index 2cb9a1d88434..1bd2953b11c4 100644 --- a/scripts/Makefile.modfinal +++ b/scripts/Makefile.modfinal @@ -9,7 +9,7 @@ __modfinal: include $(objtree)/include/config/auto.conf include $(srctree)/scripts/Kbuild.include -# for c_flags +# for c_flags and objtool_args include $(srctree)/scripts/Makefile.lib # find all modules listed in modules.order @@ -34,10 +34,23 @@ ifdef CONFIG_LTO_CLANG # With CONFIG_LTO_CLANG, reuse the object file we compiled for modpost to # avoid a second slow LTO link prelink-ext := .lto -endif + +# ELF processing was skipped earlier because we didn't have native code, +# so let's now process the prelinked binary before we link the module. + +ifdef CONFIG_STACK_VALIDATION +ifneq ($(SKIP_STACK_VALIDATION),1) +cmd_ld_ko_o += \ + $(objtree)/tools/objtool/objtool $(objtool_args) \ + $(@:.ko=$(prelink-ext).o); + +endif # SKIP_STACK_VALIDATION +endif # CONFIG_STACK_VALIDATION + +endif # CONFIG_LTO_CLANG quiet_cmd_ld_ko_o = LD [M] $@ - cmd_ld_ko_o = \ + cmd_ld_ko_o += \ $(LD) -r $(KBUILD_LDFLAGS) \ $(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) \ -T scripts/module.lds -o $@ $(filter %.o, $^); \ diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh index 3e99a19b9195..a352a5ad9ef7 100755 --- a/scripts/link-vmlinux.sh +++ b/scripts/link-vmlinux.sh @@ -93,8 +93,29 @@ objtool_link() { local objtoolopt; + if [ "${CONFIG_LTO_CLANG} ${CONFIG_STACK_VALIDATION}" = "y y" ]; then + # Don't perform vmlinux validation unless explicitly requested, + # but run objtool on vmlinux.o now that we have an object file. + if [ -n "${CONFIG_UNWINDER_ORC}" ]; then + objtoolopt="orc generate" + else + objtoolopt="check" + fi + + if [ -n ${USE_OBJTOOL_MCOUNT} ]; then + objtoolopt="${objtoolopt} --mcount" + fi + fi + if [ -n "${CONFIG_VMLINUX_VALIDATION}" ]; then - objtoolopt="check --vmlinux" + if [ -z "${objtoolopt}" ]; then + objtoolopt="check --vmlinux" + else + objtoolopt="${objtoolopt} --vmlinux" + fi + fi + + if [ -n "${objtoolopt}" ]; then if [ -z "${CONFIG_FRAME_POINTER}" ]; then objtoolopt="${objtoolopt} --no-fp" fi -- 2.28.0.681.g6f77f65b4e-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> 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, Steven Rostedt <rostedt@goodmis.org>, clang-built-linux@googlegroups.com, Sami Tolvanen <samitolvanen@google.com>, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v3 13/30] kbuild: lto: postpone objtool Date: Fri, 18 Sep 2020 13:14:19 -0700 [thread overview] Message-ID: <20200918201436.2932360-14-samitolvanen@google.com> (raw) In-Reply-To: <20200918201436.2932360-1-samitolvanen@google.com> With LTO, LLVM bitcode won't be compiled into native code until modpost_link, or modfinal for modules. This change postpones calls to objtool until after these steps, and moves objtool_args to Makefile.lib, so the arguments can be reused in Makefile.modfinal. Signed-off-by: Sami Tolvanen <samitolvanen@google.com> --- arch/Kconfig | 2 +- scripts/Makefile.build | 22 ++-------------------- scripts/Makefile.lib | 11 +++++++++++ scripts/Makefile.modfinal | 19 ++++++++++++++++--- scripts/link-vmlinux.sh | 23 ++++++++++++++++++++++- 5 files changed, 52 insertions(+), 25 deletions(-) diff --git a/arch/Kconfig b/arch/Kconfig index 520e900efc75..727be15ba19e 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -600,7 +600,7 @@ config LTO_CLANG depends on $(success,$(NM) --help | head -n 1 | grep -qi llvm) depends on $(success,$(AR) --help | head -n 1 | grep -qi llvm) depends on ARCH_SUPPORTS_LTO_CLANG - depends on !FTRACE_MCOUNT_RECORD + depends on HAVE_OBJTOOL_MCOUNT || !(X86_64 && DYNAMIC_FTRACE) depends on !KASAN depends on !GCOV_KERNEL select LTO diff --git a/scripts/Makefile.build b/scripts/Makefile.build index 44b6d964bcad..541dbe791743 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -218,30 +218,11 @@ cmd_record_mcount = $(if $(findstring $(strip $(CC_FLAGS_FTRACE)),$(_c_flags)), endif # USE_RECORDMCOUNT ifdef CONFIG_STACK_VALIDATION +ifndef CONFIG_LTO_CLANG ifneq ($(SKIP_STACK_VALIDATION),1) __objtool_obj := $(objtree)/tools/objtool/objtool -objtool_args = $(if $(CONFIG_UNWINDER_ORC),orc generate,check) - -objtool_args += $(if $(part-of-module), --module,) - -ifndef CONFIG_FRAME_POINTER -objtool_args += --no-fp -endif -ifdef CONFIG_GCOV_KERNEL -objtool_args += --no-unreachable -endif -ifdef CONFIG_RETPOLINE - objtool_args += --retpoline -endif -ifdef CONFIG_X86_SMAP - objtool_args += --uaccess -endif -ifdef USE_OBJTOOL_MCOUNT - objtool_args += --mcount -endif - # 'OBJECT_FILES_NON_STANDARD := y': skip objtool checking for a directory # 'OBJECT_FILES_NON_STANDARD_foo.o := 'y': skip objtool checking for a file # 'OBJECT_FILES_NON_STANDARD_foo.o := 'n': override directory skip for a file @@ -253,6 +234,7 @@ objtool_obj = $(if $(patsubst y%,, \ $(__objtool_obj)) endif # SKIP_STACK_VALIDATION +endif # CONFIG_LTO_CLANG endif # CONFIG_STACK_VALIDATION # Rebuild all objects when objtool changes, or is enabled/disabled. diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 3d599716940c..745d88172bc7 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -216,6 +216,17 @@ dtc_cpp_flags = -Wp,-MMD,$(depfile).pre.tmp -nostdinc \ $(addprefix -I,$(DTC_INCLUDE)) \ -undef -D__DTS__ +# Objtool arguments are also needed for modfinal with LTO, so we define +# then here to avoid duplication. +objtool_args = \ + $(if $(CONFIG_UNWINDER_ORC),orc generate,check) \ + $(if $(part-of-module), --module,) \ + $(if $(CONFIG_FRAME_POINTER), --no-fp,) \ + $(if $(CONFIG_GCOV_KERNEL), --no-unreachable,) \ + $(if $(CONFIG_RETPOLINE), --retpoline,) \ + $(if $(CONFIG_X86_SMAP), --uaccess,) \ + $(if $(USE_OBJTOOL_MCOUNT), --mcount,) + # Useful for describing the dependency of composite objects # Usage: # $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add) diff --git a/scripts/Makefile.modfinal b/scripts/Makefile.modfinal index 2cb9a1d88434..1bd2953b11c4 100644 --- a/scripts/Makefile.modfinal +++ b/scripts/Makefile.modfinal @@ -9,7 +9,7 @@ __modfinal: include $(objtree)/include/config/auto.conf include $(srctree)/scripts/Kbuild.include -# for c_flags +# for c_flags and objtool_args include $(srctree)/scripts/Makefile.lib # find all modules listed in modules.order @@ -34,10 +34,23 @@ ifdef CONFIG_LTO_CLANG # With CONFIG_LTO_CLANG, reuse the object file we compiled for modpost to # avoid a second slow LTO link prelink-ext := .lto -endif + +# ELF processing was skipped earlier because we didn't have native code, +# so let's now process the prelinked binary before we link the module. + +ifdef CONFIG_STACK_VALIDATION +ifneq ($(SKIP_STACK_VALIDATION),1) +cmd_ld_ko_o += \ + $(objtree)/tools/objtool/objtool $(objtool_args) \ + $(@:.ko=$(prelink-ext).o); + +endif # SKIP_STACK_VALIDATION +endif # CONFIG_STACK_VALIDATION + +endif # CONFIG_LTO_CLANG quiet_cmd_ld_ko_o = LD [M] $@ - cmd_ld_ko_o = \ + cmd_ld_ko_o += \ $(LD) -r $(KBUILD_LDFLAGS) \ $(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) \ -T scripts/module.lds -o $@ $(filter %.o, $^); \ diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh index 3e99a19b9195..a352a5ad9ef7 100755 --- a/scripts/link-vmlinux.sh +++ b/scripts/link-vmlinux.sh @@ -93,8 +93,29 @@ objtool_link() { local objtoolopt; + if [ "${CONFIG_LTO_CLANG} ${CONFIG_STACK_VALIDATION}" = "y y" ]; then + # Don't perform vmlinux validation unless explicitly requested, + # but run objtool on vmlinux.o now that we have an object file. + if [ -n "${CONFIG_UNWINDER_ORC}" ]; then + objtoolopt="orc generate" + else + objtoolopt="check" + fi + + if [ -n ${USE_OBJTOOL_MCOUNT} ]; then + objtoolopt="${objtoolopt} --mcount" + fi + fi + if [ -n "${CONFIG_VMLINUX_VALIDATION}" ]; then - objtoolopt="check --vmlinux" + if [ -z "${objtoolopt}" ]; then + objtoolopt="check --vmlinux" + else + objtoolopt="${objtoolopt} --vmlinux" + fi + fi + + if [ -n "${objtoolopt}" ]; then if [ -z "${CONFIG_FRAME_POINTER}" ]; then objtoolopt="${objtoolopt} --no-fp" fi -- 2.28.0.681.g6f77f65b4e-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:[~2020-09-18 20:15 UTC|newest] Thread overview: 113+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-09-18 20:14 [PATCH v3 00/30] Add support for Clang LTO Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 01/30] lib/string.c: implement stpcpy Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 02/30] RAS/CEC: Fix cec_init() prototype Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 03/30] x86/boot/compressed: Disable relocation relaxation Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-21 15:53 ` Nick Desaulniers 2020-09-21 15:53 ` Nick Desaulniers 2020-09-21 15:53 ` Nick Desaulniers 2020-09-18 20:14 ` [PATCH v3 04/30] x86/asm: Replace __force_order with memory clobber Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 05/30] kbuild: preprocess module linker script Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 06/30] objtool: Add a pass for generating __mcount_loc Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 07/30] objtool: Don't autodetect vmlinux.o Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 08/30] kbuild: add support for objtool mcount Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 09/30] x86, build: use " Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 10/30] treewide: remove DISABLE_LTO Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 11/30] kbuild: add support for Clang LTO Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 12/30] kbuild: lto: fix module versioning Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen [this message] 2020-09-18 20:14 ` [PATCH v3 13/30] kbuild: lto: postpone objtool Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 21:27 ` Kees Cook 2020-09-18 21:27 ` Kees Cook 2020-09-21 18:58 ` Sami Tolvanen 2020-09-21 18:58 ` Sami Tolvanen 2020-09-21 18:58 ` Sami Tolvanen 2020-09-19 7:01 ` kernel test robot 2020-09-18 20:14 ` [PATCH v3 14/30] kbuild: lto: limit inlining Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 15/30] kbuild: lto: merge module sections Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 16/30] kbuild: lto: remove duplicate dependencies from .mod files Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 17/30] init: lto: ensure initcall ordering Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 21:29 ` Kees Cook 2020-09-18 21:29 ` Kees Cook 2020-09-18 20:14 ` [PATCH v3 18/30] init: lto: fix PREL32 relocations Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 19/30] PCI: Fix PREL32 relocations for LTO Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 20/30] modpost: lto: strip .lto from module names Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 21/30] scripts/mod: disable LTO for empty.c Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 22/30] efi/libstub: disable LTO Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 23/30] drivers/misc/lkdtm: disable LTO for rodata.o Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 24/30] arm64: export CC_USING_PATCHABLE_FUNCTION_ENTRY Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 25/30] arm64: vdso: disable LTO Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 26/30] KVM: arm64: disable LTO for the nVHE directory Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 27/30] arm64: allow LTO_CLANG and THINLTO to be selected Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 28/30] x86, vdso: disable LTO only for vDSO Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 29/30] x86, cpu: disable LTO for cpu.c Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` [PATCH v3 30/30] x86, build: allow LTO_CLANG and THINLTO to be selected Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:14 ` Sami Tolvanen 2020-09-18 20:22 ` [PATCH v3 00/30] Add support for Clang LTO Sedat Dilek 2020-09-18 20:22 ` Sedat Dilek 2020-09-18 20:22 ` Sedat Dilek 2020-09-18 20:50 ` Sami Tolvanen 2020-09-18 20:50 ` Sami Tolvanen 2020-09-18 20:50 ` Sami Tolvanen 2020-09-18 20:53 ` Nick Desaulniers 2020-09-18 20:53 ` Nick Desaulniers 2020-09-18 20:53 ` Nick Desaulniers
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