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 00/29] Add support for Clang LTO Date: Tue, 29 Sep 2020 14:46:02 -0700 [thread overview] Message-ID: <20200929214631.3516445-1-samitolvanen@google.com> (raw) This patch series adds support for building x86_64 and arm64 kernels with Clang's Link Time Optimization (LTO). In addition to performance, the primary motivation for LTO is to allow Clang's Control-Flow Integrity (CFI) to be used in the kernel. Google has shipped millions of Pixel devices running three major kernel versions with LTO+CFI since 2018. Most of the patches are build system changes for handling LLVM bitcode, which Clang produces with LTO instead of ELF object files, postponing ELF processing until a later stage, and ensuring initcall ordering. Again, patches 1-3 are not directly related to LTO, but are needed to compile LTO kernels with ToT Clang, so I'm including them in the series for your convenience: - Patch 1 ("RAS/CEC: Fix cec_init() prototype") fixes an initcall type mismatch which breaks allmodconfig with LTO. This patch is in linux-next. - Patch 2 ("x86/asm: Replace __force_order with memory clobber") fixes x86 builds with LLVM's integrated assembler, which we use with LTO for inline assembly. This patch hasn't been picked up by maintainers yet. - Patch 3 ("kbuild: preprocess module linker script") is from Masahiro's kbuild tree and makes the LTO linker script changes much cleaner. Furthermore, patches 4-8 include Peter's patch for generating __mcount_loc with objtool, and build system changes to enable it on x86. With these patches, we no longer need to annotate functions that have non-call references to __fentry__ with LTO, which makes supporting dynamic ftrace much simpler. Patch 9 disables recordmcount for arm64 when patchable function entry is used (enabled by default if the compiler supports the feature), which removes thousands of unnecessary recordmcount invocations from a defconfig build. Note that you can also pull this series from https://github.com/samitolvanen/linux.git lto-v4 --- Changes in v4: - Fixed a typo in Makefile.lib to correctly pass --no-fp to objtool. - Moved ftrace configs related to generating __mcount_loc to Kconfig, so they are available also in Makefile.modfinal. - Dropped two prerequisite patches that were merged to Linus' tree. Changes in v3: - Added a separate patch to remove the unused DISABLE_LTO treewide, as filtering out CC_FLAGS_LTO instead is preferred. - Updated the Kconfig help to explain why LTO is behind a choice and disabled by default. - Dropped CC_FLAGS_LTO_CLANG, compiler-specific LTO flags are now appended directly to CC_FLAGS_LTO. - Updated $(AR) flags as KBUILD_ARFLAGS was removed earlier. - Fixed ThinLTO cache handling for external module builds. - Rebased on top of Masahiro's patch for preprocessing modules.lds, and moved the contents of module-lto.lds to modules.lds.S. - Moved objtool_args to Makefile.lib to avoid duplication of the command line parameters in Makefile.modfinal. - Clarified in the commit message for the initcall ordering patch that the initcall order remains the same as without LTO. - Changed link-vmlinux.sh to use jobserver-exec to control the number of jobs started by generate_initcall_ordering.pl. - Dropped the x86/relocs patch to whitelist L4_PAGE_OFFSET as it's no longer needed with ToT kernel. - Disabled LTO for arch/x86/power/cpu.c to work around a Clang bug with stack protector attributes. Changes in v2: - Fixed -Wmissing-prototypes warnings with W=1. - Dropped cc-option from -fsplit-lto-unit and added .thinlto-cache scrubbing to make distclean. - Added a comment about Clang >=11 being required. - Added a patch to disable LTO for the arm64 KVM nVHE code. - Disabled objtool's noinstr validation with LTO unless enabled. - Included Peter's proposed objtool mcount patch in the series and replaced recordmcount with the objtool pass to avoid whitelisting relocations that are not calls. - Updated several commit messages with better explanations. Arvind Sankar (1): x86/asm: Replace __force_order with memory clobber Luca Stefani (1): RAS/CEC: Fix cec_init() prototype Masahiro Yamada (1): kbuild: preprocess module linker script Peter Zijlstra (1): objtool: Add a pass for generating __mcount_loc Sami Tolvanen (25): objtool: Don't autodetect vmlinux.o tracing: move function tracer options to Kconfig tracing: add support for objtool mcount x86, build: use objtool mcount arm64: disable recordmcount with DYNAMIC_FTRACE_WITH_REGS treewide: remove DISABLE_LTO kbuild: add support for Clang LTO kbuild: lto: fix module versioning kbuild: lto: postpone objtool kbuild: lto: limit inlining kbuild: lto: merge module sections kbuild: lto: remove duplicate dependencies from .mod files init: lto: ensure initcall ordering init: lto: fix PREL32 relocations PCI: Fix PREL32 relocations for LTO modpost: lto: strip .lto from module names scripts/mod: disable LTO for empty.c efi/libstub: disable LTO drivers/misc/lkdtm: disable LTO for rodata.o arm64: vdso: disable LTO KVM: arm64: disable LTO for the nVHE directory arm64: allow LTO_CLANG and THINLTO to be selected x86, vdso: disable LTO only for vDSO x86, cpu: disable LTO for cpu.c x86, build: allow LTO_CLANG and THINLTO to be selected .gitignore | 1 + Makefile | 68 +++-- arch/Kconfig | 68 +++++ arch/arm/Makefile | 4 - .../module.lds => include/asm/module.lds.h} | 2 + arch/arm64/Kconfig | 4 + arch/arm64/Makefile | 4 - .../module.lds => include/asm/module.lds.h} | 2 + arch/arm64/kernel/vdso/Makefile | 4 +- arch/arm64/kvm/hyp/nvhe/Makefile | 4 +- arch/ia64/Makefile | 1 - .../{module.lds => include/asm/module.lds.h} | 0 arch/m68k/Makefile | 1 - .../module.lds => include/asm/module.lds.h} | 0 arch/powerpc/Makefile | 1 - .../module.lds => include/asm/module.lds.h} | 0 arch/riscv/Makefile | 3 - .../module.lds => include/asm/module.lds.h} | 3 +- arch/sparc/vdso/Makefile | 2 - arch/um/include/asm/Kbuild | 1 + arch/x86/Kconfig | 3 + arch/x86/Makefile | 5 + arch/x86/boot/compressed/pgtable_64.c | 9 - arch/x86/entry/vdso/Makefile | 5 +- arch/x86/include/asm/special_insns.h | 28 +- arch/x86/kernel/cpu/common.c | 4 +- arch/x86/power/Makefile | 4 + drivers/firmware/efi/libstub/Makefile | 2 + drivers/misc/lkdtm/Makefile | 1 + drivers/ras/cec.c | 9 +- include/asm-generic/Kbuild | 1 + include/asm-generic/module.lds.h | 10 + include/asm-generic/vmlinux.lds.h | 11 +- include/linux/init.h | 79 ++++- include/linux/pci.h | 19 +- kernel/Makefile | 3 - kernel/trace/Kconfig | 29 ++ scripts/.gitignore | 1 + scripts/Makefile | 3 + scripts/Makefile.build | 69 +++-- scripts/Makefile.lib | 17 +- scripts/Makefile.modfinal | 29 +- scripts/Makefile.modpost | 22 +- scripts/generate_initcall_order.pl | 270 ++++++++++++++++++ scripts/link-vmlinux.sh | 95 +++++- scripts/mod/Makefile | 1 + scripts/mod/modpost.c | 16 +- scripts/mod/modpost.h | 9 + scripts/mod/sumversion.c | 6 +- scripts/{module-common.lds => module.lds.S} | 31 ++ scripts/package/builddeb | 2 +- tools/objtool/builtin-check.c | 13 +- tools/objtool/builtin.h | 2 +- tools/objtool/check.c | 83 ++++++ tools/objtool/check.h | 1 + tools/objtool/objtool.h | 1 + 56 files changed, 906 insertions(+), 160 deletions(-) rename arch/arm/{kernel/module.lds => include/asm/module.lds.h} (72%) rename arch/arm64/{kernel/module.lds => include/asm/module.lds.h} (76%) rename arch/ia64/{module.lds => include/asm/module.lds.h} (100%) rename arch/m68k/{kernel/module.lds => include/asm/module.lds.h} (100%) rename arch/powerpc/{kernel/module.lds => include/asm/module.lds.h} (100%) rename arch/riscv/{kernel/module.lds => include/asm/module.lds.h} (84%) create mode 100644 include/asm-generic/module.lds.h create mode 100755 scripts/generate_initcall_order.pl rename scripts/{module-common.lds => module.lds.S} (59%) base-commit: ccc1d052eff9f3cfe59d201263903fe1d46c79a5 -- 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 00/29] Add support for Clang LTO Date: Tue, 29 Sep 2020 14:46:02 -0700 [thread overview] Message-ID: <20200929214631.3516445-1-samitolvanen@google.com> (raw) This patch series adds support for building x86_64 and arm64 kernels with Clang's Link Time Optimization (LTO). In addition to performance, the primary motivation for LTO is to allow Clang's Control-Flow Integrity (CFI) to be used in the kernel. Google has shipped millions of Pixel devices running three major kernel versions with LTO+CFI since 2018. Most of the patches are build system changes for handling LLVM bitcode, which Clang produces with LTO instead of ELF object files, postponing ELF processing until a later stage, and ensuring initcall ordering. Again, patches 1-3 are not directly related to LTO, but are needed to compile LTO kernels with ToT Clang, so I'm including them in the series for your convenience: - Patch 1 ("RAS/CEC: Fix cec_init() prototype") fixes an initcall type mismatch which breaks allmodconfig with LTO. This patch is in linux-next. - Patch 2 ("x86/asm: Replace __force_order with memory clobber") fixes x86 builds with LLVM's integrated assembler, which we use with LTO for inline assembly. This patch hasn't been picked up by maintainers yet. - Patch 3 ("kbuild: preprocess module linker script") is from Masahiro's kbuild tree and makes the LTO linker script changes much cleaner. Furthermore, patches 4-8 include Peter's patch for generating __mcount_loc with objtool, and build system changes to enable it on x86. With these patches, we no longer need to annotate functions that have non-call references to __fentry__ with LTO, which makes supporting dynamic ftrace much simpler. Patch 9 disables recordmcount for arm64 when patchable function entry is used (enabled by default if the compiler supports the feature), which removes thousands of unnecessary recordmcount invocations from a defconfig build. Note that you can also pull this series from https://github.com/samitolvanen/linux.git lto-v4 --- Changes in v4: - Fixed a typo in Makefile.lib to correctly pass --no-fp to objtool. - Moved ftrace configs related to generating __mcount_loc to Kconfig, so they are available also in Makefile.modfinal. - Dropped two prerequisite patches that were merged to Linus' tree. Changes in v3: - Added a separate patch to remove the unused DISABLE_LTO treewide, as filtering out CC_FLAGS_LTO instead is preferred. - Updated the Kconfig help to explain why LTO is behind a choice and disabled by default. - Dropped CC_FLAGS_LTO_CLANG, compiler-specific LTO flags are now appended directly to CC_FLAGS_LTO. - Updated $(AR) flags as KBUILD_ARFLAGS was removed earlier. - Fixed ThinLTO cache handling for external module builds. - Rebased on top of Masahiro's patch for preprocessing modules.lds, and moved the contents of module-lto.lds to modules.lds.S. - Moved objtool_args to Makefile.lib to avoid duplication of the command line parameters in Makefile.modfinal. - Clarified in the commit message for the initcall ordering patch that the initcall order remains the same as without LTO. - Changed link-vmlinux.sh to use jobserver-exec to control the number of jobs started by generate_initcall_ordering.pl. - Dropped the x86/relocs patch to whitelist L4_PAGE_OFFSET as it's no longer needed with ToT kernel. - Disabled LTO for arch/x86/power/cpu.c to work around a Clang bug with stack protector attributes. Changes in v2: - Fixed -Wmissing-prototypes warnings with W=1. - Dropped cc-option from -fsplit-lto-unit and added .thinlto-cache scrubbing to make distclean. - Added a comment about Clang >=11 being required. - Added a patch to disable LTO for the arm64 KVM nVHE code. - Disabled objtool's noinstr validation with LTO unless enabled. - Included Peter's proposed objtool mcount patch in the series and replaced recordmcount with the objtool pass to avoid whitelisting relocations that are not calls. - Updated several commit messages with better explanations. Arvind Sankar (1): x86/asm: Replace __force_order with memory clobber Luca Stefani (1): RAS/CEC: Fix cec_init() prototype Masahiro Yamada (1): kbuild: preprocess module linker script Peter Zijlstra (1): objtool: Add a pass for generating __mcount_loc Sami Tolvanen (25): objtool: Don't autodetect vmlinux.o tracing: move function tracer options to Kconfig tracing: add support for objtool mcount x86, build: use objtool mcount arm64: disable recordmcount with DYNAMIC_FTRACE_WITH_REGS treewide: remove DISABLE_LTO kbuild: add support for Clang LTO kbuild: lto: fix module versioning kbuild: lto: postpone objtool kbuild: lto: limit inlining kbuild: lto: merge module sections kbuild: lto: remove duplicate dependencies from .mod files init: lto: ensure initcall ordering init: lto: fix PREL32 relocations PCI: Fix PREL32 relocations for LTO modpost: lto: strip .lto from module names scripts/mod: disable LTO for empty.c efi/libstub: disable LTO drivers/misc/lkdtm: disable LTO for rodata.o arm64: vdso: disable LTO KVM: arm64: disable LTO for the nVHE directory arm64: allow LTO_CLANG and THINLTO to be selected x86, vdso: disable LTO only for vDSO x86, cpu: disable LTO for cpu.c x86, build: allow LTO_CLANG and THINLTO to be selected .gitignore | 1 + Makefile | 68 +++-- arch/Kconfig | 68 +++++ arch/arm/Makefile | 4 - .../module.lds => include/asm/module.lds.h} | 2 + arch/arm64/Kconfig | 4 + arch/arm64/Makefile | 4 - .../module.lds => include/asm/module.lds.h} | 2 + arch/arm64/kernel/vdso/Makefile | 4 +- arch/arm64/kvm/hyp/nvhe/Makefile | 4 +- arch/ia64/Makefile | 1 - .../{module.lds => include/asm/module.lds.h} | 0 arch/m68k/Makefile | 1 - .../module.lds => include/asm/module.lds.h} | 0 arch/powerpc/Makefile | 1 - .../module.lds => include/asm/module.lds.h} | 0 arch/riscv/Makefile | 3 - .../module.lds => include/asm/module.lds.h} | 3 +- arch/sparc/vdso/Makefile | 2 - arch/um/include/asm/Kbuild | 1 + arch/x86/Kconfig | 3 + arch/x86/Makefile | 5 + arch/x86/boot/compressed/pgtable_64.c | 9 - arch/x86/entry/vdso/Makefile | 5 +- arch/x86/include/asm/special_insns.h | 28 +- arch/x86/kernel/cpu/common.c | 4 +- arch/x86/power/Makefile | 4 + drivers/firmware/efi/libstub/Makefile | 2 + drivers/misc/lkdtm/Makefile | 1 + drivers/ras/cec.c | 9 +- include/asm-generic/Kbuild | 1 + include/asm-generic/module.lds.h | 10 + include/asm-generic/vmlinux.lds.h | 11 +- include/linux/init.h | 79 ++++- include/linux/pci.h | 19 +- kernel/Makefile | 3 - kernel/trace/Kconfig | 29 ++ scripts/.gitignore | 1 + scripts/Makefile | 3 + scripts/Makefile.build | 69 +++-- scripts/Makefile.lib | 17 +- scripts/Makefile.modfinal | 29 +- scripts/Makefile.modpost | 22 +- scripts/generate_initcall_order.pl | 270 ++++++++++++++++++ scripts/link-vmlinux.sh | 95 +++++- scripts/mod/Makefile | 1 + scripts/mod/modpost.c | 16 +- scripts/mod/modpost.h | 9 + scripts/mod/sumversion.c | 6 +- scripts/{module-common.lds => module.lds.S} | 31 ++ scripts/package/builddeb | 2 +- tools/objtool/builtin-check.c | 13 +- tools/objtool/builtin.h | 2 +- tools/objtool/check.c | 83 ++++++ tools/objtool/check.h | 1 + tools/objtool/objtool.h | 1 + 56 files changed, 906 insertions(+), 160 deletions(-) rename arch/arm/{kernel/module.lds => include/asm/module.lds.h} (72%) rename arch/arm64/{kernel/module.lds => include/asm/module.lds.h} (76%) rename arch/ia64/{module.lds => include/asm/module.lds.h} (100%) rename arch/m68k/{kernel/module.lds => include/asm/module.lds.h} (100%) rename arch/powerpc/{kernel/module.lds => include/asm/module.lds.h} (100%) rename arch/riscv/{kernel/module.lds => include/asm/module.lds.h} (84%) create mode 100644 include/asm-generic/module.lds.h create mode 100755 scripts/generate_initcall_order.pl rename scripts/{module-common.lds => module.lds.S} (59%) base-commit: ccc1d052eff9f3cfe59d201263903fe1d46c79a5 -- 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 reply other threads:[~2020-09-29 21:46 UTC|newest] Thread overview: 120+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-09-29 21:46 Sami Tolvanen [this message] 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 ` [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 ` [PATCH v4 12/29] kbuild: lto: fix module versioning Sami Tolvanen 2020-09-29 21:46 ` 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
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20200929214631.3516445-1-samitolvanen@google.com \ --to=samitolvanen@google.com \ --cc=clang-built-linux@googlegroups.com \ --cc=gregkh@linuxfoundation.org \ --cc=keescook@chromium.org \ --cc=kernel-hardening@lists.openwall.com \ --cc=linux-arch@vger.kernel.org \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-kbuild@vger.kernel.org \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-pci@vger.kernel.org \ --cc=masahiroy@kernel.org \ --cc=ndesaulniers@google.com \ --cc=paulmck@kernel.org \ --cc=peterz@infradead.org \ --cc=rostedt@goodmis.org \ --cc=will@kernel.org \ --cc=x86@kernel.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.