Re: [PATCH v6 00/30] objtool: Function validation tracing

[Alexandre Chartre]

On 11/21/25 11:36, Peter Zijlstra wrote:
> On Fri, Nov 21, 2025 at 10:53:10AM +0100, Alexandre Chartre wrote:
> > Alexandre Chartre (30):
> >    objtool: Move disassembly functions to a separated file
> >    objtool: Create disassembly context
> >    objtool: Disassemble code with libopcodes instead of running objdump
> >    tool build: Remove annoying newline in build output
> >    objtool: Print symbol during disassembly
> >    objtool: Store instruction disassembly result
> >    objtool: Disassemble instruction on warning or backtrace
> >    objtool: Extract code to validate instruction from the validate branch
> >      loop
> >    objtool: Record symbol name max length
> >    objtool: Add option to trace function validation
> >    objtool: Trace instruction state changes during function validation
> >    objtool: Improve register reporting during function validation
> >    objtool: Identify the different types of alternatives
> >    objtool: Add functions to better name alternatives
> >    objtool: Improve tracing of alternative instructions
> >    objtool: Do not validate IBT for .return_sites and .call_sites
> >    objtool: Add the --disas=<function-pattern> action
> >    objtool: Preserve alternatives order
> >    objtool: Print headers for alternatives
> >    objtool: Disassemble group alternatives
> >    objtool: Print addresses with alternative instructions
> >    objtool: Disassemble exception table alternatives
> >    objtool: Disassemble jump table alternatives
> >    objtool: Fix address references in alternatives
> >    objtool: Provide access to feature and flags of group alternatives
> >    objtool: Function to get the name of a CPU feature
> >    objtool: Improve naming of group alternatives
> >    objtool: Compact output for alternatives with one instruction
> >    objtool: Add wide output for disassembly
> >    objtool: Trim trailing NOPs in alternative
>
> I've pushed out these patches to queue/objtool/core, however when
> building defconfig I get this:
>
>    CC      /mnt/hirez/usr/src/linux-2.6/defconfig-build/tools/objtool/librbtree.o
> arch/x86/special.c:10:10: fatal error: lib/cpu-feature-names.c: No such file or directory
>     10 | #include "lib/cpu-feature-names.c"
>        |          ^~~~~~~~~~~~~~~~~~~~~~~~~
> compilation terminated.

I having a look. The problem is when using the O=<something> option.

Sorry,

alex.