linux-kernel - Re: [PATCH v2 0/6] selftests/x86: fix build errors and warnings found via clang

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Message-ID: <f4877afd-dc2c-4e54-8b53-c681d3eed045@linuxfoundation.org>
Date: Thu, 30 May 2024 08:58:15 -0600
From: Shuah Khan <skhan@...uxfoundation.org>
To: John Hubbard <jhubbard@...dia.com>, Shuah Khan <shuah@...nel.org>,
 Ingo Molnar <mingo@...nel.org>
Cc: angquan yu <angquan21@...il.com>,
 "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
 Binbin Wu <binbin.wu@...ux.intel.com>, Alexey Dobriyan
 <adobriyan@...il.com>, Rick Edgecombe <rick.p.edgecombe@...el.com>,
 Sohil Mehta <sohil.mehta@...el.com>, Yu-cheng Yu <yu-cheng.yu@...el.com>,
 Dave Hansen <dave.hansen@...ux.intel.com>,
 Valentin Obst <kernel@...entinobst.de>, linux-kselftest@...r.kernel.org,
 LKML <linux-kernel@...r.kernel.org>, llvm@...ts.linux.dev, x86@...nel.org,
 Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: [PATCH v2 0/6] selftests/x86: fix build errors and warnings found
 via clang

On 5/27/24 15:00, John Hubbard wrote:
> Hi,
> 
> Just a bunch of build and warnings fixes that show up when
> building with clang. Some of these depend on each other, so
> I'm sending them as a series.
> 
> Changes since the first version:
> 
> 1) Rebased onto Linux 6.10-rc1

x86 test patches usually go through x86 tree.

This series requires x86 maintainer review and ack for me
to take this through kselftest tree.

> 
> Enjoy!
> 
> thanks,
> John Hubbard
> 
> John Hubbard (6):
>    selftests/x86: build test_FISTTP.c with clang
>    selftests/x86: build fsgsbase_restore.c with clang
>    selftests/x86: build sysret_rip.c with clang
>    selftests/x86: avoid -no-pie warnings from clang during compilation
>    selftests/x86: remove (or use) unused variables and functions
>    selftests/x86: fix printk warnings reported by clang
> 
>   tools/testing/selftests/x86/Makefile          | 10 +++++++
>   tools/testing/selftests/x86/amx.c             | 16 -----------
>   .../testing/selftests/x86/clang_helpers_32.S  | 11 ++++++++
>   .../testing/selftests/x86/clang_helpers_64.S  | 28 +++++++++++++++++++
>   tools/testing/selftests/x86/fsgsbase.c        |  6 ----
>   .../testing/selftests/x86/fsgsbase_restore.c  | 11 ++++----
>   tools/testing/selftests/x86/sigreturn.c       |  2 +-
>   .../testing/selftests/x86/syscall_arg_fault.c |  1 -
>   tools/testing/selftests/x86/sysret_rip.c      | 20 ++++---------
>   tools/testing/selftests/x86/test_FISTTP.c     |  8 +++---
>   tools/testing/selftests/x86/test_vsyscall.c   | 15 ++++------
>   tools/testing/selftests/x86/vdso_restorer.c   |  2 ++
>   12 files changed, 72 insertions(+), 58 deletions(-)
>   create mode 100644 tools/testing/selftests/x86/clang_helpers_32.S
>   create mode 100644 tools/testing/selftests/x86/clang_helpers_64.S
> 
> 
> base-commit: 2bfcfd584ff5ccc8bb7acde19b42570414bf880b
> prerequisite-patch-id: 39d606b9b165077aa1a3a3b0a3b396dba0c20070

thanks,
-- Shuah