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| author | Josh Poimboeuf <[email protected]> | 2019-07-18 01:36:42 +0000 |
|---|---|---|
| committer | Thomas Gleixner <[email protected]> | 2019-07-18 19:01:05 +0000 |
| commit | 3a6ab4bcc52263dd5b1d2fd2e4ce95a38c798b4d (patch) | |
| tree | a7732d2432182026cf2ac8f7a7f4c789a4673188 /tools/perf/scripts/python/mem-phys-addr.py | |
| parent | x86/head/64: Annotate start_cpu0() as non-callable (diff) | |
| download | kernel-3a6ab4bcc52263dd5b1d2fd2e4ce95a38c798b4d.tar.gz kernel-3a6ab4bcc52263dd5b1d2fd2e4ce95a38c798b4d.zip | |
x86/uaccess: Remove ELF function annotation from copy_user_handle_tail()
After an objtool improvement, it's complaining about the CLAC in
copy_user_handle_tail():
arch/x86/lib/copy_user_64.o: warning: objtool: .altinstr_replacement+0x12: redundant UACCESS disable
arch/x86/lib/copy_user_64.o: warning: objtool: copy_user_handle_tail()+0x6: (alt)
arch/x86/lib/copy_user_64.o: warning: objtool: copy_user_handle_tail()+0x2: (alt)
arch/x86/lib/copy_user_64.o: warning: objtool: copy_user_handle_tail()+0x0: <=== (func)
copy_user_handle_tail() is incorrectly marked as a callable function, so
objtool is rightfully concerned about the CLAC with no corresponding
STAC.
Remove the ELF function annotation. The copy_user_handle_tail() code
path is already verified by objtool because it's jumped to by other
callable asm code (which does the corresponding STAC).
Signed-off-by: Josh Poimboeuf <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Acked-by: Peter Zijlstra (Intel) <[email protected]>
Link: https://lkml.kernel.org/r/6b6e436774678b4b9873811ff023bd29935bee5b.1563413318.git.jpoimboe@redhat.com
Diffstat (limited to 'tools/perf/scripts/python/mem-phys-addr.py')
0 files changed, 0 insertions, 0 deletions