From: Sami Tolvanen <samitolvanen@google.com> To: Steven Rostedt <rostedt@goodmis.org> Cc: Peter Zijlstra <peterz@infradead.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>, Nick Desaulniers <ndesaulniers@google.com>, clang-built-linux <clang-built-linux@googlegroups.com>, Kernel Hardening <kernel-hardening@lists.openwall.com>, linux-arch <linux-arch@vger.kernel.org>, linux-arm-kernel <linux-arm-kernel@lists.infradead.org>, linux-kbuild <linux-kbuild@vger.kernel.org>, LKML <linux-kernel@vger.kernel.org>, linux-pci@vger.kernel.org, X86 ML <x86@kernel.org>, Josh Poimboeuf <jpoimboe@redhat.com>, Matt Helsley <mhelsley@vmware.com> Subject: Re: [RFC][PATCH] objtool,x86_64: Replace recordmcount with objtool Date: Fri, 17 Jul 2020 10:47:51 -0700 [thread overview] Message-ID: <CABCJKuda0AFCZ-1J2NTLc-M0xax007a9u-fzOoxmU2z60jvzbA@mail.gmail.com> (raw) In-Reply-To: <20200717133645.7816c0b6@oasis.local.home> On Fri, Jul 17, 2020 at 10:36 AM Steven Rostedt <rostedt@goodmis.org> wrote: > > On Fri, 17 Jul 2020 10:28:13 -0700 > Sami Tolvanen <samitolvanen@google.com> wrote: > > > On Fri, Jun 26, 2020 at 4:29 AM Peter Zijlstra <peterz@infradead.org> wrote: > > > > > > On Thu, Jun 25, 2020 at 03:40:42PM -0700, Sami Tolvanen wrote: > > > > > > > > Not boot tested, but it generates the required sections and they look > > > > > more or less as expected, ymmv. > > > > > > > > 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 > > > > > > > > This breaks DYNAMIC_FTRACE according to kernel/trace/ftrace.c: > > > > > > > > #ifndef CONFIG_FTRACE_MCOUNT_RECORD > > > > # error Dynamic ftrace depends on MCOUNT_RECORD > > > > #endif > > > > > > > > And the build errors after that seem to confirm this. It looks like we might > > > > need another flag to skip recordmcount. > > > > > > Hurm, Steve, how you want to do that? > > > > Steven, did you have any thoughts about this? Moving recordmcount to > > an objtool pass that knows about call sites feels like a much cleaner > > solution than annotating kernel code to avoid unwanted relocations. > > > > Bah, I started to reply to this then went to look for details, got > distracted, forgot about it, my laptop crashed (due to a zoom call), > and I lost the email I was writing (haven't looked in the drafts > folder, but my idea about this has changed since anyway). > > So the problem is that we process mcount references in other areas and > that confuses the ftrace modification portion? Correct. > Someone just submitted a patch for arm64 for this: > > https://lore.kernel.org/r/20200717143338.19302-1-gregory.herrero@oracle.com > > Is that what you want? That looks like the same issue, but we need to fix this on x86 instead. Sami
WARNING: multiple messages have this Message-ID (diff)
From: Sami Tolvanen <samitolvanen@google.com> To: Steven Rostedt <rostedt@goodmis.org> Cc: linux-arch <linux-arch@vger.kernel.org>, X86 ML <x86@kernel.org>, Kees Cook <keescook@chromium.org>, "Paul E. McKenney" <paulmck@kernel.org>, Kernel Hardening <kernel-hardening@lists.openwall.com>, Peter Zijlstra <peterz@infradead.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Masahiro Yamada <masahiroy@kernel.org>, linux-kbuild <linux-kbuild@vger.kernel.org>, Nick Desaulniers <ndesaulniers@google.com>, LKML <linux-kernel@vger.kernel.org>, clang-built-linux <clang-built-linux@googlegroups.com>, Josh Poimboeuf <jpoimboe@redhat.com>, linux-pci@vger.kernel.org, Will Deacon <will@kernel.org>, linux-arm-kernel <linux-arm-kernel@lists.infradead.org>, Matt Helsley <mhelsley@vmware.com> Subject: Re: [RFC][PATCH] objtool,x86_64: Replace recordmcount with objtool Date: Fri, 17 Jul 2020 10:47:51 -0700 [thread overview] Message-ID: <CABCJKuda0AFCZ-1J2NTLc-M0xax007a9u-fzOoxmU2z60jvzbA@mail.gmail.com> (raw) In-Reply-To: <20200717133645.7816c0b6@oasis.local.home> On Fri, Jul 17, 2020 at 10:36 AM Steven Rostedt <rostedt@goodmis.org> wrote: > > On Fri, 17 Jul 2020 10:28:13 -0700 > Sami Tolvanen <samitolvanen@google.com> wrote: > > > On Fri, Jun 26, 2020 at 4:29 AM Peter Zijlstra <peterz@infradead.org> wrote: > > > > > > On Thu, Jun 25, 2020 at 03:40:42PM -0700, Sami Tolvanen wrote: > > > > > > > > Not boot tested, but it generates the required sections and they look > > > > > more or less as expected, ymmv. > > > > > > > > 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 > > > > > > > > This breaks DYNAMIC_FTRACE according to kernel/trace/ftrace.c: > > > > > > > > #ifndef CONFIG_FTRACE_MCOUNT_RECORD > > > > # error Dynamic ftrace depends on MCOUNT_RECORD > > > > #endif > > > > > > > > And the build errors after that seem to confirm this. It looks like we might > > > > need another flag to skip recordmcount. > > > > > > Hurm, Steve, how you want to do that? > > > > Steven, did you have any thoughts about this? Moving recordmcount to > > an objtool pass that knows about call sites feels like a much cleaner > > solution than annotating kernel code to avoid unwanted relocations. > > > > Bah, I started to reply to this then went to look for details, got > distracted, forgot about it, my laptop crashed (due to a zoom call), > and I lost the email I was writing (haven't looked in the drafts > folder, but my idea about this has changed since anyway). > > So the problem is that we process mcount references in other areas and > that confuses the ftrace modification portion? Correct. > Someone just submitted a patch for arm64 for this: > > https://lore.kernel.org/r/20200717143338.19302-1-gregory.herrero@oracle.com > > Is that what you want? That looks like the same issue, but we need to fix this on x86 instead. Sami _______________________________________________ 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:[~2020-07-17 17:48 UTC|newest] Thread overview: 520+ 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 ` Sami Tolvanen 2020-06-24 20:31 ` 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 ` Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 20:31 ` [PATCH 02/22] kbuild: add support for Clang LTO Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 20:53 ` Nick Desaulniers 2020-06-24 20:53 ` Nick Desaulniers 2020-06-24 20:53 ` Nick Desaulniers 2020-06-24 21:29 ` Sami Tolvanen 2020-06-24 21:29 ` Sami Tolvanen 2020-06-25 2:26 ` Nathan Chancellor 2020-06-25 2:26 ` Nathan Chancellor 2020-06-25 16:13 ` Sami Tolvanen 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 ` Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 20:31 ` [PATCH 04/22] kbuild: lto: fix recordmcount Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 21:27 ` Peter Zijlstra 2020-06-24 21:27 ` Peter Zijlstra 2020-06-24 21:45 ` Sami Tolvanen 2020-06-24 21:45 ` Sami Tolvanen 2020-06-25 7:45 ` Peter Zijlstra 2020-06-25 7:45 ` Peter Zijlstra 2020-06-25 16:15 ` Sami Tolvanen 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 20:02 ` Peter Zijlstra 2020-06-25 20:54 ` Nick Desaulniers 2020-06-25 20:54 ` Nick Desaulniers 2020-06-25 20:54 ` Nick Desaulniers 2020-06-25 22:40 ` Sami Tolvanen 2020-06-25 22:40 ` Sami Tolvanen 2020-06-26 11:29 ` Peter Zijlstra 2020-06-26 11:29 ` Peter Zijlstra 2020-06-26 11:42 ` Peter Zijlstra 2020-06-26 11:42 ` Peter Zijlstra 2020-07-17 17:28 ` Sami Tolvanen 2020-07-17 17:28 ` Sami Tolvanen 2020-07-17 17:28 ` Sami Tolvanen 2020-07-17 17:36 ` Steven Rostedt 2020-07-17 17:36 ` Steven Rostedt 2020-07-17 17:47 ` Sami Tolvanen [this message] 2020-07-17 17:47 ` Sami Tolvanen 2020-07-17 17:47 ` Sami Tolvanen 2020-07-17 18:05 ` Steven Rostedt 2020-07-17 18:05 ` Steven Rostedt 2020-07-20 16:52 ` Sami Tolvanen 2020-07-20 16:52 ` Sami Tolvanen 2020-07-20 16:52 ` Sami Tolvanen 2020-07-22 17:58 ` Steven Rostedt 2020-07-22 17:58 ` Steven Rostedt 2020-07-22 18:07 ` Sami Tolvanen 2020-07-22 18:07 ` Sami Tolvanen 2020-07-22 18:07 ` Sami Tolvanen 2020-07-22 17:55 ` Steven Rostedt 2020-07-22 17:55 ` Steven Rostedt 2020-07-22 18:41 ` Peter Zijlstra 2020-07-22 18:41 ` Peter Zijlstra 2020-07-22 19:09 ` Steven Rostedt 2020-07-22 19:09 ` Steven Rostedt 2020-07-22 20:03 ` Sami Tolvanen 2020-07-22 20:03 ` Sami Tolvanen 2020-07-22 20:03 ` Sami Tolvanen 2020-07-22 23:56 ` Peter Zijlstra 2020-07-22 23:56 ` Peter Zijlstra 2020-07-23 0:06 ` Steven Rostedt 2020-07-23 0:06 ` Steven Rostedt 2020-08-06 22:09 ` Sami Tolvanen 2020-08-06 22:09 ` Sami Tolvanen 2020-06-24 20:31 ` [PATCH 05/22] kbuild: lto: postpone objtool Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 21:19 ` Peter Zijlstra 2020-06-24 21:19 ` Peter Zijlstra 2020-06-24 21:49 ` Sami Tolvanen 2020-06-24 21:49 ` Sami Tolvanen 2020-06-25 7:47 ` Peter Zijlstra 2020-06-25 7:47 ` Peter Zijlstra 2020-06-25 16:22 ` Sami Tolvanen 2020-06-25 16:22 ` Sami Tolvanen 2020-06-25 18:33 ` Peter Zijlstra 2020-06-25 18:33 ` Peter Zijlstra 2020-06-25 19:32 ` Sami Tolvanen 2020-06-25 19:32 ` Sami Tolvanen 2020-06-24 20:31 ` [PATCH 06/22] kbuild: lto: limit inlining Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 21:20 ` Peter Zijlstra 2020-06-24 21:20 ` Peter Zijlstra 2020-06-24 23:37 ` Sami Tolvanen 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 20:31 ` Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 21:01 ` Nick Desaulniers 2020-06-24 21:01 ` Nick Desaulniers 2020-06-24 21:01 ` Nick Desaulniers 2020-06-24 21:31 ` Sami Tolvanen 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 20:31 ` Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 21:13 ` Nick Desaulniers 2020-06-24 21:13 ` Nick Desaulniers 2020-06-24 21:13 ` Nick Desaulniers 2020-06-24 20:31 ` [PATCH 09/22] init: lto: ensure initcall ordering Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-25 0:58 ` kernel test robot 2020-06-25 0:58 ` kernel test robot 2020-06-25 0:58 ` kernel test robot 2020-06-25 4:19 ` kernel test robot 2020-06-25 4:19 ` 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 ` Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 20:31 ` [PATCH 11/22] pci: " Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 22:49 ` kernel test robot 2020-06-24 22:49 ` kernel test robot 2020-06-24 22:49 ` kernel test robot 2020-06-24 23:03 ` Nick Desaulniers 2020-06-24 23:03 ` Nick Desaulniers 2020-06-24 23:03 ` Nick Desaulniers 2020-06-24 23:03 ` Nick Desaulniers 2020-06-24 23:21 ` Sami Tolvanen 2020-06-24 23:21 ` Sami Tolvanen 2020-06-24 23:21 ` Sami Tolvanen 2020-07-17 20:26 ` Bjorn Helgaas 2020-07-17 20:26 ` Bjorn Helgaas 2020-07-22 18:15 ` Sami Tolvanen 2020-07-22 18:15 ` Sami Tolvanen 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 20:31 ` Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 22:05 ` Nick Desaulniers 2020-06-24 22:05 ` Nick Desaulniers 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 20:31 ` Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 20:57 ` Nick Desaulniers 2020-06-24 20:57 ` Nick Desaulniers 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 ` Sami Tolvanen 2020-06-24 20:31 ` 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 ` Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 20:31 ` [PATCH 16/22] arm64: export CC_USING_PATCHABLE_FUNCTION_ENTRY Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 20:31 ` [PATCH 17/22] arm64: vdso: disable LTO Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 20:58 ` Nick Desaulniers 2020-06-24 20:58 ` Nick Desaulniers 2020-06-24 20:58 ` Nick Desaulniers 2020-06-24 21:09 ` Nick Desaulniers 2020-06-24 21:09 ` Nick Desaulniers 2020-06-24 21:09 ` Nick Desaulniers 2020-06-24 23:51 ` Andi Kleen 2020-06-24 23:51 ` Andi Kleen 2020-06-24 21:52 ` Sami Tolvanen 2020-06-24 21:52 ` Sami Tolvanen 2020-06-24 23:05 ` Nick Desaulniers 2020-06-24 23:05 ` Nick Desaulniers 2020-06-24 23:05 ` Nick Desaulniers 2020-06-24 23:39 ` Sami Tolvanen 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 ` Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 20:31 ` [PATCH 19/22] x86, vdso: disable LTO only for vDSO Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 20:31 ` 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 ` Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 20:31 ` [PATCH 21/22] x86, relocs: Ignore L4_PAGE_OFFSET relocations Sami Tolvanen 2020-06-24 20:31 ` Sami Tolvanen 2020-06-24 20:31 ` 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 20:32 ` Sami Tolvanen 2020-06-24 20:32 ` Sami Tolvanen 2020-06-24 21:15 ` [PATCH 00/22] add support for Clang LTO Peter Zijlstra 2020-06-24 21:15 ` Peter Zijlstra 2020-06-24 21:30 ` Sami Tolvanen 2020-06-24 21:30 ` Sami Tolvanen 2020-06-25 8:27 ` Will Deacon 2020-06-25 8:27 ` Will Deacon 2020-06-24 21:31 ` Nick Desaulniers 2020-06-24 21:31 ` Nick Desaulniers 2020-06-24 21:31 ` Nick Desaulniers 2020-06-25 8:03 ` Peter Zijlstra 2020-06-25 8:03 ` Peter Zijlstra 2020-06-25 8:24 ` Peter Zijlstra 2020-06-25 8:24 ` Peter Zijlstra 2020-06-25 8:57 ` Peter Zijlstra 2020-06-25 8:57 ` Peter Zijlstra 2020-06-30 19:19 ` Marco Elver 2020-06-30 19:19 ` Marco Elver 2020-06-30 20:12 ` Peter Zijlstra 2020-06-30 20:12 ` Peter Zijlstra 2020-06-30 20:30 ` Paul E. McKenney 2020-06-30 20:30 ` Paul E. McKenney 2020-07-01 9:10 ` Peter Zijlstra 2020-07-01 9:10 ` Peter Zijlstra 2020-07-01 14:20 ` David Laight 2020-07-01 14:20 ` David Laight 2020-07-01 16:06 ` Paul E. McKenney 2020-07-01 16:06 ` Paul E. McKenney 2020-07-02 9:37 ` David Laight 2020-07-02 9:37 ` David Laight 2020-07-02 18:00 ` Paul E. McKenney 2020-07-02 18:00 ` Paul E. McKenney 2020-07-01 9:41 ` Marco Elver 2020-07-01 9:41 ` Marco Elver 2020-07-01 9:41 ` Marco Elver 2020-07-01 10:03 ` Will Deacon 2020-07-01 10:03 ` Will Deacon 2020-07-01 11:40 ` Peter Zijlstra 2020-07-01 11:40 ` Peter Zijlstra 2020-07-01 14:06 ` Paul E. McKenney 2020-07-01 14:06 ` Paul E. McKenney 2020-07-01 15:05 ` Peter Zijlstra 2020-07-01 15:05 ` Peter Zijlstra 2020-07-01 16:03 ` Paul E. McKenney 2020-07-01 16:03 ` Paul E. McKenney 2020-07-02 8:20 ` Peter Zijlstra 2020-07-02 8:20 ` Peter Zijlstra 2020-07-02 17:59 ` Paul E. McKenney 2020-07-02 17:59 ` Paul E. McKenney 2020-07-03 13:13 ` Peter Zijlstra 2020-07-03 13:13 ` Peter Zijlstra 2020-07-03 13:25 ` Peter Zijlstra 2020-07-03 13:25 ` Peter Zijlstra 2020-07-03 14:51 ` Paul E. McKenney 2020-07-03 14:51 ` Paul E. McKenney 2020-07-03 14:42 ` Paul E. McKenney 2020-07-03 14:42 ` Paul E. McKenney 2020-07-06 16:26 ` Paul E. McKenney 2020-07-06 16:26 ` Paul E. McKenney 2020-07-06 18:29 ` Peter Zijlstra 2020-07-06 18:29 ` Peter Zijlstra 2020-07-06 18:39 ` Paul E. McKenney 2020-07-06 18:39 ` Paul E. McKenney 2020-07-06 19:40 ` Peter Zijlstra 2020-07-06 19:40 ` Peter Zijlstra 2020-07-06 23:41 ` Paul E. McKenney 2020-07-06 23:41 ` Paul E. McKenney 2020-06-28 16:56 ` Masahiro Yamada 2020-06-28 16:56 ` Masahiro Yamada 2020-06-28 16:56 ` Masahiro Yamada 2020-06-29 23:20 ` Sami Tolvanen 2020-06-29 23:20 ` Sami Tolvanen 2020-07-07 15:51 ` Sami Tolvanen 2020-07-07 15:51 ` Sami Tolvanen 2020-07-07 16:05 ` Sami Tolvanen 2020-07-07 16:05 ` Sami Tolvanen 2020-07-07 16:56 ` Jakub Kicinski 2020-07-07 16:56 ` Jakub Kicinski 2020-07-07 17:17 ` Nick Desaulniers 2020-07-07 17:17 ` Nick Desaulniers 2020-07-07 17:17 ` Nick Desaulniers 2020-07-07 17:30 ` Jakub Kicinski 2020-07-07 17:30 ` Jakub Kicinski 2020-07-11 16:32 ` Paul Menzel 2020-07-11 16:32 ` Paul Menzel 2020-07-11 16:32 ` Paul Menzel 2020-07-12 8:59 ` Sedat Dilek 2020-07-12 8:59 ` Sedat Dilek 2020-07-12 8:59 ` Sedat Dilek 2020-07-12 18:40 ` Nathan Chancellor 2020-07-12 18:40 ` Nathan Chancellor 2020-07-14 9:44 ` Sedat Dilek 2020-07-14 9:44 ` Sedat Dilek 2020-07-14 9:44 ` Sedat Dilek 2020-07-14 17:54 ` Nick Desaulniers 2020-07-14 17:54 ` Nick Desaulniers 2020-07-14 17:54 ` Nick Desaulniers 2020-07-12 23:34 ` Sami Tolvanen 2020-07-12 23:34 ` Sami Tolvanen 2020-07-12 23:34 ` Sami Tolvanen 2020-07-14 12:16 ` Paul Menzel 2020-07-14 12:16 ` Paul Menzel 2020-07-14 12:35 ` Sedat Dilek 2020-07-14 12:35 ` Sedat Dilek 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 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` [PATCH v2 01/28] x86/boot/compressed: Disable relocation relaxation Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 21:44 ` Kees Cook 2020-09-03 21:44 ` Kees Cook 2020-09-03 23:42 ` Arvind Sankar 2020-09-03 23:42 ` Arvind Sankar 2020-09-04 7:14 ` Nathan Chancellor 2020-09-04 7:14 ` Nathan Chancellor 2020-09-06 3:16 ` Sasha Levin 2020-09-03 20:30 ` [PATCH v2 02/28] x86/asm: Replace __force_order with memory clobber Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 21:45 ` Kees Cook 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 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 21:47 ` Kees Cook 2020-09-03 21:47 ` Kees Cook 2020-09-06 3:16 ` Sasha Levin 2020-09-03 20:30 ` [PATCH v2 04/28] RAS/CEC: Fix cec_init() prototype Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 21:50 ` Kees Cook 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 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 21:51 ` Kees Cook 2020-09-03 21:51 ` Kees Cook 2020-09-03 22:03 ` Sami Tolvanen 2020-09-03 22:03 ` Sami Tolvanen 2020-09-03 22:03 ` Sami Tolvanen 2020-09-04 9:31 ` peterz 2020-09-04 9:31 ` peterz 2020-09-10 18:29 ` Kees Cook 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 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 21:52 ` Kees Cook 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 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 21:56 ` Kees Cook 2020-09-03 21:56 ` Kees Cook 2020-09-03 20:30 ` [PATCH v2 08/28] x86, build: use " Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 21:58 ` Kees Cook 2020-09-03 21:58 ` Kees Cook 2020-09-03 22:11 ` Sami Tolvanen 2020-09-03 22:11 ` Sami Tolvanen 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 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 22:08 ` Kees Cook 2020-09-03 22:08 ` Kees Cook 2020-09-08 17:02 ` Sami Tolvanen 2020-09-08 17:02 ` Sami Tolvanen 2020-09-05 19:36 ` Masahiro Yamada 2020-09-05 19:36 ` Masahiro Yamada 2020-09-08 17:10 ` Sami Tolvanen 2020-09-08 17:10 ` Sami Tolvanen 2020-09-05 20:17 ` Masahiro Yamada 2020-09-05 20:17 ` Masahiro Yamada 2020-09-08 17:14 ` Sami Tolvanen 2020-09-08 17:14 ` Sami Tolvanen 2020-09-07 15:30 ` Masahiro Yamada 2020-09-07 15:30 ` Masahiro Yamada 2020-09-08 17:30 ` Sami Tolvanen 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 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 22:11 ` Kees Cook 2020-09-03 22:11 ` Kees Cook 2020-09-08 18:23 ` Sami Tolvanen 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 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 22:19 ` Kees Cook 2020-09-03 22:19 ` Kees Cook 2020-09-08 20:56 ` Sami Tolvanen 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 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 22:20 ` Kees Cook 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 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 22:23 ` Kees Cook 2020-09-03 22:23 ` Kees Cook 2020-09-07 15:25 ` Masahiro Yamada 2020-09-07 15:25 ` Masahiro Yamada 2020-09-08 21:07 ` Sami Tolvanen 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 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 22:29 ` Kees Cook 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 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 22:40 ` Kees Cook 2020-09-03 22:40 ` Kees Cook 2020-09-08 21:16 ` Sami Tolvanen 2020-09-08 21:16 ` Sami Tolvanen 2020-09-10 9:25 ` David Woodhouse 2020-09-10 9:25 ` David Woodhouse 2020-09-10 9:25 ` David Woodhouse 2020-09-10 15:07 ` Sami Tolvanen 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 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 22:41 ` Kees Cook 2020-09-03 22:41 ` Kees Cook 2020-09-06 3:16 ` Sasha Levin 2020-09-03 20:30 ` [PATCH v2 17/28] PCI: Fix PREL32 relocations for LTO Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 22:42 ` Kees Cook 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 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 22:42 ` Kees Cook 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 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 22:43 ` Kees Cook 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 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 22:43 ` Kees Cook 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 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` [PATCH v2 22/28] arm64: export CC_USING_PATCHABLE_FUNCTION_ENTRY Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 22:44 ` Kees Cook 2020-09-03 22:44 ` Kees Cook 2020-09-08 21:23 ` Sami Tolvanen 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 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 22:45 ` Kees Cook 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 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 22:45 ` Kees Cook 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 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 22:45 ` Kees Cook 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 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 22:46 ` Kees Cook 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 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 22:47 ` Kees Cook 2020-09-03 22:47 ` Kees Cook 2020-09-08 23:28 ` Sami Tolvanen 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 20:30 ` Sami Tolvanen 2020-09-03 20:30 ` Sami Tolvanen 2020-09-03 22:48 ` Kees Cook 2020-09-03 22:48 ` Kees Cook 2020-09-03 23:34 ` [PATCH v2 00/28] Add support for Clang LTO Kees Cook 2020-09-03 23:34 ` Kees Cook 2020-09-04 4:45 ` Nathan Chancellor 2020-09-04 4:45 ` Nathan Chancellor 2020-09-03 23:38 ` Kees Cook 2020-09-03 23:38 ` Kees Cook 2020-09-04 7:53 ` Sedat Dilek 2020-09-04 7:53 ` Sedat Dilek 2020-09-04 7:53 ` Sedat Dilek 2020-09-04 8:55 ` peterz 2020-09-04 8:55 ` peterz 2020-09-04 9:08 ` Sedat Dilek 2020-09-04 9:08 ` Sedat Dilek 2020-09-04 9:08 ` Sedat Dilek 2020-09-06 0:24 ` Masahiro Yamada 2020-09-06 0:24 ` Masahiro Yamada 2020-09-08 23:46 ` Sami Tolvanen 2020-09-08 23:46 ` Sami Tolvanen 2020-09-10 1:18 ` Masahiro Yamada 2020-09-10 1:18 ` Masahiro Yamada 2020-09-10 15:17 ` Sami Tolvanen 2020-09-10 15:17 ` Sami Tolvanen 2020-09-10 18:18 ` Kees Cook 2020-09-10 18:18 ` Kees Cook 2020-09-10 17:46 ` Nick Desaulniers 2020-09-10 18:07 ` Masahiro Yamada 2020-09-22 16:27 ` [EXTERNAL] " Ian Bearman 2020-09-22 17:52 ` Nick Desaulniers
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