On Thu, Jan 21, 2021 at 10:29 PM Josh Poimboeuf <jpoim...@redhat.com> wrote: > > v2: > - fix commit description for why xen hypervisor page contents don't > matter [Juergen] > - annotate indirect jumps as safe instead of converting them to > retpolines [Andrew, Juergen] > - drop patch 1 - fake jumps no longer exist > - add acks > > Based on tip/objtool/core. > > > Add support for proper vmlinux.o validation, which will be needed for > Sami's upcoming x86 LTO set. (And vmlinux validation is the future for > objtool anyway, for other reasons.) > > This isn't 100% done -- most notably, crypto still needs to be supported > -- but I think this gets us most of the way there. > > This can also be found at > > git://git.kernel.org/pub/scm/linux/kernel/git/jpoimboe/linux.git > objtool-vmlinux >
Should this be s/objtool-vmlinux/objtool-vmlinux-v2 ? - Sedat - > And for more testing it can be combined with Sami's x86 LTO patches: > > https://github.com/samitolvanen/linux clang-lto > > > Josh Poimboeuf (20): > objtool: Fix error handling for STD/CLD warnings > objtool: Fix retpoline detection in asm code > objtool: Fix ".cold" section suffix check for newer versions of GCC > objtool: Support retpoline jump detection for vmlinux.o > x86/ftrace: Add UNWIND_HINT_FUNC annotation for ftrace_stub > objtool: Assume only ELF functions do sibling calls > objtool: Add asm version of STACK_FRAME_NON_STANDARD > objtool: Combine UNWIND_HINT_RET_OFFSET and UNWIND_HINT_FUNC > objtool: Add xen_start_kernel() to noreturn list > objtool: Move unsuffixed symbol conversion to a helper function > objtool: Add CONFIG_CFI_CLANG support > x86/xen: Support objtool validation in xen-asm.S > x86/xen: Support objtool vmlinux.o validation in xen-head.S > x86/xen/pvh: Annotate indirect branch as safe > x86/ftrace: Support objtool vmlinux.o validation in ftrace_64.S > x86/acpi: Annotate indirect branch as safe > x86/acpi: Support objtool validation in wakeup_64.S > x86/power: Annotate indirect branches as safe > x86/power: Move restore_registers() to top of the file > x86/power: Support objtool validation in hibernate_asm_64.S > > arch/x86/include/asm/unwind_hints.h | 13 +--- > arch/x86/kernel/acpi/Makefile | 1 - > arch/x86/kernel/acpi/wakeup_64.S | 4 + > arch/x86/kernel/ftrace_64.S | 8 +- > arch/x86/lib/retpoline.S | 2 +- > arch/x86/platform/pvh/head.S | 2 + > arch/x86/power/Makefile | 1 - > arch/x86/power/hibernate_asm_64.S | 103 +++++++++++++------------- > arch/x86/xen/Makefile | 1 - > arch/x86/xen/xen-asm.S | 29 +++++--- > arch/x86/xen/xen-head.S | 5 +- > include/linux/objtool.h | 13 +++- > tools/include/linux/objtool.h | 13 +++- > tools/objtool/arch/x86/decode.c | 4 +- > tools/objtool/arch/x86/special.c | 2 +- > tools/objtool/check.c | 89 ++++++++++++---------- > tools/objtool/elf.c | 88 ++++++++++++++++------ > tools/objtool/include/objtool/check.h | 12 ++- > tools/objtool/include/objtool/elf.h | 2 +- > 19 files changed, 240 insertions(+), 152 deletions(-) > > -- > 2.29.2 >
