Re: [PATCH v5 bpf-next 0/5] Add bpf_getxattr

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On Tue, Jun 28, 2022 at 04:19:43PM +0000, KP Singh wrote:
> v4 -> v5
> 
> - Fixes suggested by Andrii
> 
> v3 -> v4
> 
> - Fixed issue incorrect increment of arg counter
> - Removed __weak and noinline from kfunc definiton
> - Some other minor fixes.
> 
> v2 -> v3
> 
> - Fixed missing prototype error
> - Fixes suggested by other Joanne and Kumar.
> 
> v1 -> v2
> 
> - Used kfuncs as suggested by Alexei
> - Used Benjamin Tissoires' patch from the HID v4 series to add a
>   sleepable kfunc set (I sent the patch as a part of this series as it
>   seems to have been dropped from v5) and acked it. Hope this is okay.
> - Added support for verifying string constants to kfuncs

Hm, I mean this isn't really giving any explanation as to why you are
doing this. There's literally not a single sentence about the rationale?
Did you accidently forget to put that into the cover letter? :)

> 
> 
> 
> Benjamin Tissoires (1):
>   btf: Add a new kfunc set which allows to mark a function to be
>     sleepable
> 
> KP Singh (4):
>   bpf: kfunc support for ARG_PTR_TO_CONST_STR
>   bpf: Allow kfuncs to be used in LSM programs
>   bpf: Add a bpf_getxattr kfunc
>   bpf/selftests: Add a selftest for bpf_getxattr
> 
>  include/linux/bpf_verifier.h                  |  2 +
>  include/linux/btf.h                           |  2 +
>  kernel/bpf/btf.c                              | 43 ++++++++-
>  kernel/bpf/verifier.c                         | 89 +++++++++++--------
>  kernel/trace/bpf_trace.c                      | 42 +++++++++
>  .../testing/selftests/bpf/prog_tests/xattr.c  | 54 +++++++++++
>  tools/testing/selftests/bpf/progs/xattr.c     | 37 ++++++++
>  7 files changed, 229 insertions(+), 40 deletions(-)
>  create mode 100644 tools/testing/selftests/bpf/prog_tests/xattr.c
>  create mode 100644 tools/testing/selftests/bpf/progs/xattr.c
> 
> -- 
> 2.37.0.rc0.161.g10f37bed90-goog
> 



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