From: Nick Desaulniers <ndesaulniers@google.com> To: Peter Zijlstra <peterz@infradead.org> Cc: Sami Tolvanen <samitolvanen@google.com>, Steven Rostedt <rostedt@goodmis.org>, Masahiro Yamada <masahiroy@kernel.org>, Will Deacon <will@kernel.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, "Paul E. McKenney" <paulmck@kernel.org>, Kees Cook <keescook@chromium.org>, clang-built-linux <clang-built-linux@googlegroups.com>, Kernel Hardening <kernel-hardening@lists.openwall.com>, linux-arch <linux-arch@vger.kernel.org>, Linux ARM <linux-arm-kernel@lists.infradead.org>, Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>, LKML <linux-kernel@vger.kernel.org>, linux-pci@vger.kernel.org, "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@kernel.org>, Josh Poimboeuf <jpoimboe@redhat.com>, mhelsley@vmware.com Subject: Re: [RFC][PATCH] objtool,x86_64: Replace recordmcount with objtool Date: Thu, 25 Jun 2020 13:54:48 -0700 Message-ID: <CAKwvOdmToWTaiaw0iX56FLeezW30k3S=pZLf97N2Ta7zJkSL0w@mail.gmail.com> (raw) In-Reply-To: <20200625200235.GQ4781@hirez.programming.kicks-ass.net> On Thu, Jun 25, 2020 at 1:02 PM Peter Zijlstra <peterz@infradead.org> wrote: > > On Thu, Jun 25, 2020 at 09:15:03AM -0700, Sami Tolvanen wrote: > > On Thu, Jun 25, 2020 at 09:45:30AM +0200, Peter Zijlstra wrote: > > > > At least for x86_64 I can do a really quick take for a recordmcount pass > > > in objtool, but I suppose you also need this for ARM64 ? > > > > Sure, sounds good. arm64 uses -fpatchable-function-entry with clang, so we > > don't need recordmcount there. > > This is on top of my local pile: > > git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git master > > which notably includes the static_call series. > > Not boot tested, but it generates the required sections and they look > more or less as expected, ymmv. > > --- > arch/x86/Kconfig | 1 - > scripts/Makefile.build | 3 ++ > scripts/link-vmlinux.sh | 2 +- > tools/objtool/builtin-check.c | 9 ++--- > tools/objtool/builtin.h | 2 +- > tools/objtool/check.c | 81 +++++++++++++++++++++++++++++++++++++++++++ > tools/objtool/check.h | 1 + > tools/objtool/objtool.h | 1 + > 8 files changed, 91 insertions(+), 9 deletions(-) > > diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig > index a291823f3f26..189575c12434 100644 > --- a/arch/x86/Kconfig > +++ b/arch/x86/Kconfig > @@ -174,7 +174,6 @@ config X86 > select HAVE_EXIT_THREAD > select HAVE_FAST_GUP > select HAVE_FENTRY if X86_64 || DYNAMIC_FTRACE > - select HAVE_FTRACE_MCOUNT_RECORD > select HAVE_FUNCTION_GRAPH_TRACER > select HAVE_FUNCTION_TRACER > select HAVE_GCC_PLUGINS > diff --git a/scripts/Makefile.build b/scripts/Makefile.build > index 2e8810b7e5ed..c774befc57da 100644 > --- a/scripts/Makefile.build > +++ b/scripts/Makefile.build > @@ -227,6 +227,9 @@ endif > ifdef CONFIG_X86_SMAP > objtool_args += --uaccess > endif > +ifdef CONFIG_DYNAMIC_FTRACE > + 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 > diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh > index 92dd745906f4..00c6e4f28a1a 100755 > --- a/scripts/link-vmlinux.sh > +++ b/scripts/link-vmlinux.sh > @@ -60,7 +60,7 @@ objtool_link() > local objtoolopt; > > if [ -n "${CONFIG_VMLINUX_VALIDATION}" ]; then > - objtoolopt="check" > + objtoolopt="check --vmlinux" > if [ -z "${CONFIG_FRAME_POINTER}" ]; then > objtoolopt="${objtoolopt} --no-fp" > fi > diff --git a/tools/objtool/builtin-check.c b/tools/objtool/builtin-check.c > index 4896c5a89702..a6c3a3fba67d 100644 > --- a/tools/objtool/builtin-check.c > +++ b/tools/objtool/builtin-check.c > @@ -18,7 +18,7 @@ > #include "builtin.h" > #include "objtool.h" > > -bool no_fp, no_unreachable, retpoline, module, backtrace, uaccess, stats, validate_dup, vmlinux, fpu; > +bool no_fp, no_unreachable, retpoline, module, backtrace, uaccess, stats, validate_dup, vmlinux, fpu, mcount; > > static const char * const check_usage[] = { > "objtool check [<options>] file.o", > @@ -36,12 +36,13 @@ const struct option check_options[] = { > OPT_BOOLEAN('d', "duplicate", &validate_dup, "duplicate validation for vmlinux.o"), > OPT_BOOLEAN('l', "vmlinux", &vmlinux, "vmlinux.o validation"), > OPT_BOOLEAN('F', "fpu", &fpu, "validate FPU context"), > + OPT_BOOLEAN('M', "mcount", &mcount, "generate __mcount_loc"), > OPT_END(), > }; > > int cmd_check(int argc, const char **argv) > { > - const char *objname, *s; > + const char *objname; > > argc = parse_options(argc, argv, check_options, check_usage, 0); > > @@ -50,9 +51,5 @@ int cmd_check(int argc, const char **argv) > > objname = argv[0]; > > - s = strstr(objname, "vmlinux.o"); > - if (s && !s[9]) > - vmlinux = true; > - > return check(objname, false); > } > diff --git a/tools/objtool/builtin.h b/tools/objtool/builtin.h > index 7158e09d4cc9..b51d883ec245 100644 > --- a/tools/objtool/builtin.h > +++ b/tools/objtool/builtin.h > @@ -8,7 +8,7 @@ > #include <subcmd/parse-options.h> > > extern const struct option check_options[]; > -extern bool no_fp, no_unreachable, retpoline, module, backtrace, uaccess, stats, validate_dup, vmlinux, fpu; > +extern bool no_fp, no_unreachable, retpoline, module, backtrace, uaccess, stats, validate_dup, vmlinux, fpu, mcount; > > extern int cmd_check(int argc, const char **argv); > extern int cmd_orc(int argc, const char **argv); > diff --git a/tools/objtool/check.c b/tools/objtool/check.c > index 6647a8d1545b..ee99566bdae9 100644 > --- a/tools/objtool/check.c > +++ b/tools/objtool/check.c > @@ -533,6 +533,65 @@ static int create_static_call_sections(struct objtool_file *file) > return 0; > } > > +static int create_mcount_loc_sections(struct objtool_file *file) > +{ > + struct section *sec, *reloc_sec; > + struct reloc *reloc; > + unsigned long *loc; > + struct instruction *insn; > + int idx; > + > + sec = find_section_by_name(file->elf, "__mcount_loc"); > + if (sec) { > + INIT_LIST_HEAD(&file->mcount_loc_list); > + WARN("file already has __mcount_loc section, skipping"); > + return 0; > + } > + > + if (list_empty(&file->mcount_loc_list)) > + return 0; > + > + idx = 0; > + list_for_each_entry(insn, &file->mcount_loc_list, mcount_loc_node) > + idx++; > + > + sec = elf_create_section(file->elf, "__mcount_loc", 0, sizeof(unsigned long), idx); > + if (!sec) > + return -1; > + > + reloc_sec = elf_create_reloc_section(file->elf, sec, SHT_RELA); > + if (!reloc_sec) > + return -1; > + > + idx = 0; > + list_for_each_entry(insn, &file->mcount_loc_list, mcount_loc_node) { > + > + loc = (unsigned long *)sec->data->d_buf + idx; > + memset(loc, 0, sizeof(unsigned long)); > + > + reloc = malloc(sizeof(*reloc)); > + if (!reloc) { > + perror("malloc"); > + return -1; > + } > + memset(reloc, 0, sizeof(*reloc)); calloc(1, sizeof(*reloc))? > + > + reloc->sym = insn->sec->sym; > + reloc->addend = insn->offset; > + reloc->type = R_X86_64_64; > + reloc->offset = idx * sizeof(unsigned long); > + reloc->sec = reloc_sec; > + elf_add_reloc(file->elf, reloc); > + > + idx++; > + } > + > + if (elf_rebuild_reloc_section(file->elf, reloc_sec)) > + return -1; > + > + return 0; > +} > + > /* > * Warnings shouldn't be reported for ignored functions. > */ > @@ -892,6 +951,22 @@ static int add_call_destinations(struct objtool_file *file) > insn->type = INSN_NOP; > } > > + if (mcount && !strcmp(insn->call_dest->name, "__fentry__")) { > + if (reloc) { > + reloc->type = R_NONE; > + elf_write_reloc(file->elf, reloc); > + } > + > + elf_write_insn(file->elf, insn->sec, > + insn->offset, insn->len, > + arch_nop_insn(insn->len)); > + > + insn->type = INSN_NOP; > + > + list_add_tail(&insn->mcount_loc_node, > + &file->mcount_loc_list); > + } > + > /* > * Whatever stack impact regular CALLs have, should be undone > * by the RETURN of the called function. > @@ -3004,6 +3079,7 @@ int check(const char *_objname, bool orc) > INIT_LIST_HEAD(&file.insn_list); > hash_init(file.insn_hash); > INIT_LIST_HEAD(&file.static_call_list); > + INIT_LIST_HEAD(&file.mcount_loc_list); > file.c_file = !vmlinux && find_section_by_name(file.elf, ".comment"); > file.ignore_unreachables = no_unreachable; > file.hints = false; > @@ -3056,6 +3132,11 @@ int check(const char *_objname, bool orc) > goto out; > warnings += ret; > > + ret = create_mcount_loc_sections(&file); > + if (ret < 0) > + goto out; > + warnings += ret; > + > if (orc) { > ret = create_orc(&file); > if (ret < 0) > diff --git a/tools/objtool/check.h b/tools/objtool/check.h > index cd95fca0d237..01f11b5da5dd 100644 > --- a/tools/objtool/check.h > +++ b/tools/objtool/check.h > @@ -24,6 +24,7 @@ struct instruction { > struct list_head list; > struct hlist_node hash; > struct list_head static_call_node; > + struct list_head mcount_loc_node; > struct section *sec; > unsigned long offset; > unsigned int len; > diff --git a/tools/objtool/objtool.h b/tools/objtool/objtool.h > index 9a7cd0b88bd8..f604b22d22cc 100644 > --- a/tools/objtool/objtool.h > +++ b/tools/objtool/objtool.h > @@ -17,6 +17,7 @@ struct objtool_file { > struct list_head insn_list; > DECLARE_HASHTABLE(insn_hash, 20); > struct list_head static_call_list; > + struct list_head mcount_loc_list; > bool ignore_unreachables, c_file, hints, rodata; > }; > -- Thanks, ~Nick Desaulniers
next prev parent reply index Thread overview: 213+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-06-24 20:31 [PATCH 00/22] add support for Clang LTO Sami Tolvanen 2020-06-24 20:31 ` [PATCH 01/22] objtool: use sh_info to find the base for .rela sections Sami Tolvanen 2020-06-24 20:31 ` [PATCH 02/22] kbuild: add support for Clang LTO Sami Tolvanen 2020-06-24 20:53 ` Nick Desaulniers 2020-06-24 21:29 ` Sami Tolvanen 2020-06-25 2:26 ` Nathan Chancellor 2020-06-25 16:13 ` Sami Tolvanen 2020-06-24 20:31 ` [PATCH 03/22] kbuild: lto: fix module versioning Sami Tolvanen 2020-06-24 20:31 ` [PATCH 04/22] kbuild: lto: fix recordmcount Sami Tolvanen 2020-06-24 21:27 ` Peter Zijlstra 2020-06-24 21:45 ` Sami Tolvanen 2020-06-25 7:45 ` Peter Zijlstra 2020-06-25 16:15 ` Sami Tolvanen 2020-06-25 20:02 ` [RFC][PATCH] objtool,x86_64: Replace recordmcount with objtool Peter Zijlstra 2020-06-25 20:54 ` Nick Desaulniers [this message] 2020-06-25 22:40 ` Sami Tolvanen 2020-06-26 11:29 ` Peter Zijlstra 2020-06-26 11:42 ` Peter Zijlstra 2020-07-17 17:28 ` Sami Tolvanen 2020-07-17 17:36 ` Steven Rostedt 2020-07-17 17:47 ` Sami Tolvanen 2020-07-17 18:05 ` Steven Rostedt 2020-07-20 16:52 ` Sami Tolvanen 2020-07-22 17:58 ` Steven Rostedt 2020-07-22 18:07 ` Sami Tolvanen 2020-07-22 17:55 ` Steven Rostedt 2020-07-22 18:41 ` Peter Zijlstra 2020-07-22 19:09 ` Steven Rostedt 2020-07-22 20:03 ` Sami Tolvanen 2020-07-22 23:56 ` Peter Zijlstra 2020-07-23 0:06 ` Steven Rostedt 2020-08-06 22:09 ` Sami Tolvanen 2020-06-24 20:31 ` [PATCH 05/22] kbuild: lto: postpone objtool Sami Tolvanen 2020-06-24 21:19 ` Peter Zijlstra 2020-06-24 21:49 ` Sami Tolvanen 2020-06-25 7:47 ` Peter Zijlstra 2020-06-25 16:22 ` Sami Tolvanen 2020-06-25 18:33 ` Peter Zijlstra 2020-06-25 19:32 ` Sami Tolvanen 2020-06-24 20:31 ` [PATCH 06/22] kbuild: lto: limit inlining Sami Tolvanen 2020-06-24 21:20 ` Peter Zijlstra 2020-06-24 23:37 ` Sami Tolvanen 2020-06-24 20:31 ` [PATCH 07/22] kbuild: lto: merge module sections Sami Tolvanen 2020-06-24 21:01 ` Nick Desaulniers 2020-06-24 21:31 ` Sami Tolvanen 2020-06-24 20:31 ` [PATCH 08/22] kbuild: lto: remove duplicate dependencies from .mod files Sami Tolvanen 2020-06-24 21:13 ` Nick Desaulniers 2020-06-24 20:31 ` [PATCH 09/22] init: lto: ensure initcall ordering Sami Tolvanen 2020-06-25 0:58 ` kernel test robot 2020-06-25 4:19 ` kernel test robot 2020-06-24 20:31 ` [PATCH 10/22] init: lto: fix PREL32 relocations Sami Tolvanen 2020-06-24 20:31 ` [PATCH 11/22] pci: " Sami Tolvanen 2020-06-24 22:49 ` kernel test robot 2020-06-24 23:03 ` Nick Desaulniers 2020-06-24 23:21 ` Sami Tolvanen 2020-07-17 20:26 ` Bjorn Helgaas 2020-07-22 18:15 ` Sami Tolvanen 2020-06-24 20:31 ` [PATCH 12/22] modpost: lto: strip .lto from module names Sami Tolvanen 2020-06-24 22:05 ` Nick Desaulniers 2020-06-24 20:31 ` [PATCH 13/22] scripts/mod: disable LTO for empty.c Sami Tolvanen 2020-06-24 20:57 ` Nick Desaulniers 2020-06-24 20:31 ` [PATCH 14/22] efi/libstub: disable LTO Sami Tolvanen 2020-06-24 20:31 ` [PATCH 15/22] drivers/misc/lkdtm: disable LTO for rodata.o Sami Tolvanen 2020-06-24 20:31 ` [PATCH 16/22] arm64: export CC_USING_PATCHABLE_FUNCTION_ENTRY Sami Tolvanen 2020-06-24 20:31 ` [PATCH 17/22] arm64: vdso: disable LTO Sami Tolvanen 2020-06-24 20:58 ` Nick Desaulniers 2020-06-24 21:09 ` Nick Desaulniers 2020-06-24 23:51 ` Andi Kleen 2020-06-24 21:52 ` Sami Tolvanen 2020-06-24 23:05 ` Nick Desaulniers 2020-06-24 23:39 ` Sami Tolvanen 2020-06-24 20:31 ` [PATCH 18/22] arm64: allow LTO_CLANG and THINLTO to be selected Sami Tolvanen 2020-06-24 20:31 ` [PATCH 19/22] x86, vdso: disable LTO only for vDSO Sami Tolvanen 2020-06-24 20:31 ` [PATCH 20/22] x86, ftrace: disable recordmcount for ftrace_make_nop Sami Tolvanen 2020-06-24 20:31 ` [PATCH 21/22] x86, relocs: Ignore L4_PAGE_OFFSET relocations Sami Tolvanen 2020-06-24 20:32 ` [PATCH 22/22] x86, build: allow LTO_CLANG and THINLTO to be selected Sami Tolvanen 2020-06-24 21:15 ` [PATCH 00/22] add support for Clang LTO Peter Zijlstra 2020-06-24 21:30 ` Sami Tolvanen 2020-06-25 8:27 ` Will Deacon 2020-06-24 21:31 ` Nick Desaulniers 2020-06-25 8:03 ` Peter Zijlstra 2020-06-25 8:24 ` Peter Zijlstra 2020-06-25 8:57 ` Peter Zijlstra 2020-06-30 19:19 ` Marco Elver 2020-06-30 20:12 ` Peter Zijlstra 2020-06-30 20:30 ` Paul E. McKenney 2020-07-01 9:10 ` Peter Zijlstra 2020-07-01 14:20 ` David Laight 2020-07-01 16:06 ` Paul E. McKenney 2020-07-02 9:37 ` David Laight 2020-07-02 18:00 ` Paul E. McKenney 2020-07-01 9:41 ` Marco Elver 2020-07-01 10:03 ` Will Deacon 2020-07-01 11:40 ` Peter Zijlstra 2020-07-01 14:06 ` Paul E. McKenney 2020-07-01 15:05 ` Peter Zijlstra 2020-07-01 16:03 ` Paul E. McKenney 2020-07-02 8:20 ` Peter Zijlstra 2020-07-02 17:59 ` Paul E. McKenney 2020-07-03 13:13 ` Peter Zijlstra 2020-07-03 13:25 ` Peter Zijlstra 2020-07-03 14:51 ` Paul E. McKenney 2020-07-03 14:42 ` Paul E. McKenney 2020-07-06 16:26 ` Paul E. McKenney 2020-07-06 18:29 ` Peter Zijlstra 2020-07-06 18:39 ` Paul E. McKenney 2020-07-06 19:40 ` Peter Zijlstra 2020-07-06 23:41 ` Paul E. McKenney 2020-06-28 16:56 ` Masahiro Yamada 2020-06-29 23:20 ` Sami Tolvanen 2020-07-07 15:51 ` Sami Tolvanen 2020-07-07 16:05 ` Sami Tolvanen 2020-07-07 16:56 ` Jakub Kicinski 2020-07-07 17:17 ` Nick Desaulniers 2020-07-07 17:30 ` Jakub Kicinski 2020-07-11 16:32 ` Paul Menzel 2020-07-12 8:59 ` Sedat Dilek 2020-07-12 18:40 ` Nathan Chancellor 2020-07-14 9:44 ` Sedat Dilek 2020-07-14 17:54 ` Nick Desaulniers 2020-07-12 23:34 ` Sami Tolvanen 2020-07-14 12:16 ` Paul Menzel 2020-07-14 12:35 ` Sedat Dilek 2020-07-14 13:40 ` Paul Menzel 2020-09-03 20:30 ` [PATCH v2 00/28] Add " Sami Tolvanen 2020-09-03 20:30 ` [PATCH v2 01/28] x86/boot/compressed: Disable relocation relaxation Sami Tolvanen 2020-09-03 21:44 ` Kees Cook 2020-09-03 23:42 ` Arvind Sankar 2020-09-04 7:14 ` Nathan Chancellor 2020-09-03 20:30 ` [PATCH v2 02/28] x86/asm: Replace __force_order with memory clobber Sami Tolvanen 2020-09-03 21:45 ` Kees Cook 2020-09-03 20:30 ` [PATCH v2 03/28] lib/string.c: implement stpcpy Sami Tolvanen 2020-09-03 21:47 ` Kees Cook 2020-09-03 20:30 ` [PATCH v2 04/28] RAS/CEC: Fix cec_init() prototype Sami Tolvanen 2020-09-03 21:50 ` Kees Cook 2020-09-03 20:30 ` [PATCH v2 05/28] objtool: Add a pass for generating __mcount_loc Sami Tolvanen 2020-09-03 21:51 ` Kees Cook 2020-09-03 22:03 ` Sami Tolvanen 2020-09-04 9:31 ` peterz 2020-09-10 18:29 ` Kees Cook 2020-09-03 20:30 ` [PATCH v2 06/28] objtool: Don't autodetect vmlinux.o Sami Tolvanen 2020-09-03 21:52 ` Kees Cook 2020-09-03 20:30 ` [PATCH v2 07/28] kbuild: add support for objtool mcount Sami Tolvanen 2020-09-03 21:56 ` Kees Cook 2020-09-03 20:30 ` [PATCH v2 08/28] x86, build: use " Sami Tolvanen 2020-09-03 21:58 ` Kees Cook 2020-09-03 22:11 ` Sami Tolvanen 2020-09-03 20:30 ` [PATCH v2 09/28] kbuild: add support for Clang LTO Sami Tolvanen 2020-09-03 22:08 ` Kees Cook 2020-09-08 17:02 ` Sami Tolvanen 2020-09-05 19:36 ` Masahiro Yamada 2020-09-08 17:10 ` Sami Tolvanen 2020-09-05 20:17 ` Masahiro Yamada 2020-09-08 17:14 ` Sami Tolvanen 2020-09-07 15:30 ` Masahiro Yamada 2020-09-08 17:30 ` Sami Tolvanen 2020-09-03 20:30 ` [PATCH v2 10/28] kbuild: lto: fix module versioning Sami Tolvanen 2020-09-03 22:11 ` Kees Cook 2020-09-08 18:23 ` Sami Tolvanen 2020-09-03 20:30 ` [PATCH v2 11/28] kbuild: lto: postpone objtool Sami Tolvanen 2020-09-03 22:19 ` Kees Cook 2020-09-08 20:56 ` Sami Tolvanen 2020-09-03 20:30 ` [PATCH v2 12/28] kbuild: lto: limit inlining Sami Tolvanen 2020-09-03 22:20 ` Kees Cook 2020-09-03 20:30 ` [PATCH v2 13/28] kbuild: lto: merge module sections Sami Tolvanen 2020-09-03 22:23 ` Kees Cook 2020-09-07 15:25 ` Masahiro Yamada 2020-09-08 21:07 ` Sami Tolvanen 2020-09-03 20:30 ` [PATCH v2 14/28] kbuild: lto: remove duplicate dependencies from .mod files Sami Tolvanen 2020-09-03 22:29 ` Kees Cook 2020-09-03 20:30 ` [PATCH v2 15/28] init: lto: ensure initcall ordering Sami Tolvanen 2020-09-03 22:40 ` Kees Cook 2020-09-08 21:16 ` Sami Tolvanen 2020-09-10 9:25 ` David Woodhouse 2020-09-10 15:07 ` Sami Tolvanen 2020-09-03 20:30 ` [PATCH v2 16/28] init: lto: fix PREL32 relocations Sami Tolvanen 2020-09-03 22:41 ` Kees Cook 2020-09-03 20:30 ` [PATCH v2 17/28] PCI: Fix PREL32 relocations for LTO Sami Tolvanen 2020-09-03 22:42 ` Kees Cook 2020-09-03 20:30 ` [PATCH v2 18/28] modpost: lto: strip .lto from module names Sami Tolvanen 2020-09-03 22:42 ` Kees Cook 2020-09-03 20:30 ` [PATCH v2 19/28] scripts/mod: disable LTO for empty.c Sami Tolvanen 2020-09-03 22:43 ` Kees Cook 2020-09-03 20:30 ` [PATCH v2 20/28] efi/libstub: disable LTO Sami Tolvanen 2020-09-03 22:43 ` Kees Cook 2020-09-03 20:30 ` [PATCH v2 21/28] drivers/misc/lkdtm: disable LTO for rodata.o Sami Tolvanen 2020-09-03 20:30 ` [PATCH v2 22/28] arm64: export CC_USING_PATCHABLE_FUNCTION_ENTRY Sami Tolvanen 2020-09-03 22:44 ` Kees Cook 2020-09-08 21:23 ` Sami Tolvanen 2020-09-03 20:30 ` [PATCH v2 23/28] arm64: vdso: disable LTO Sami Tolvanen 2020-09-03 22:45 ` Kees Cook 2020-09-03 20:30 ` [PATCH v2 24/28] KVM: arm64: disable LTO for the nVHE directory Sami Tolvanen 2020-09-03 22:45 ` Kees Cook 2020-09-03 20:30 ` [PATCH v2 25/28] arm64: allow LTO_CLANG and THINLTO to be selected Sami Tolvanen 2020-09-03 22:45 ` Kees Cook 2020-09-03 20:30 ` [PATCH v2 26/28] x86, vdso: disable LTO only for vDSO Sami Tolvanen 2020-09-03 22:46 ` Kees Cook 2020-09-03 20:30 ` [PATCH v2 27/28] x86, relocs: Ignore L4_PAGE_OFFSET relocations Sami Tolvanen 2020-09-03 22:47 ` Kees Cook 2020-09-08 23:28 ` Sami Tolvanen 2020-09-03 20:30 ` [PATCH v2 28/28] x86, build: allow LTO_CLANG and THINLTO to be selected Sami Tolvanen 2020-09-03 22:48 ` Kees Cook 2020-09-03 23:34 ` [PATCH v2 00/28] Add support for Clang LTO Kees Cook 2020-09-04 4:45 ` Nathan Chancellor 2020-09-03 23:38 ` Kees Cook 2020-09-04 7:53 ` Sedat Dilek 2020-09-04 8:55 ` peterz 2020-09-04 9:08 ` Sedat Dilek 2020-09-06 0:24 ` Masahiro Yamada 2020-09-08 23:46 ` Sami Tolvanen 2020-09-10 1:18 ` Masahiro Yamada 2020-09-10 15:17 ` Sami Tolvanen 2020-09-10 18:18 ` Kees Cook
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