Messages in this thread | | | Date | Sun, 30 Jul 2023 00:14:35 +0900 | From | Masami Hiramatsu (Google) <> | Subject | Re: [PATCH v2 0/2] x86/retpoline,kprobes: Fix the [__indirect_thunk_start, ..end] range |
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Hi Peter,
Can you pick this series to tip tree? I think, these affect to x86 arch code.
Thank you,
On Tue, 11 Jul 2023 11:19:50 +0200 Petr Pavlu <petr.pavlu@suse.com> wrote:
> Fix problems with an output position of thunk sections and the > associated definition of range [__indirect_thunk_start, > __indirect_thunk_end] which affects the kprobes optimization. > > Initial v1 of the series kept the mentioned range but it turns out the > logic which uses it is not necessary so it is removed altogether. > > Changes since v1 [1]: > - Drop the patch which moved the return thunk out of > [__indirect_thunk_start, ..end] and instead replace it with a removal > of the kprobes optimization check which looked for calls to indirect > thunks. > - Slightly adjust the commit message for the first patch, to better > match the new second patch. > > [1] https://lore.kernel.org/lkml/20230705081547.25130-1-petr.pavlu@suse.com/ > > Petr Pavlu (2): > x86/retpoline,kprobes: Fix position of thunk sections with > CONFIG_LTO_CLANG > x86/retpoline,kprobes: Skip optprobe check for indirect jumps with > retpolines and IBT > > arch/x86/include/asm/nospec-branch.h | 3 --- > arch/x86/kernel/kprobes/opt.c | 40 +++++++++++----------------- > arch/x86/kernel/vmlinux.lds.S | 4 +-- > arch/x86/lib/retpoline.S | 4 +-- > tools/perf/util/thread-stack.c | 4 +-- > 5 files changed, 20 insertions(+), 35 deletions(-) > > -- > 2.35.3 >
-- Masami Hiramatsu (Google) <mhiramat@kernel.org>
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