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Message-ID: <20240704072431.111640-1-jhubbard@nvidia.com>
Date: Thu, 4 Jul 2024 00:24:24 -0700
From: John Hubbard <jhubbard@...dia.com>
To: Shuah Khan <shuah@...nel.org>
Cc: angquan yu <angquan21@...il.com>,
"Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
Ingo Molnar <mingo@...nel.org>,
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>,
Muhammad Usama Anjum <usama.anjum@...labora.com>,
Valentin Obst <kernel@...entinobst.de>,
linux-kselftest@...r.kernel.org,
LKML <linux-kernel@...r.kernel.org>,
llvm@...ts.linux.dev,
x86@...nel.org,
John Hubbard <jhubbard@...dia.com>
Subject: [PATCH v4 0/7] selftests/x86: fix build errors and warnings found via clang
Changes since v3:
1) Rebased onto Linux 6.10-rc6+.
2) Added Muhammad's acks for the series.
Cover letter for v3:
Hi,
Dave Hansen, Muhammad Usama Anjum, here is the combined series that we
discussed yesterday [1].
As I mentioned then, this is a bit intrusive--but no more than
necessary, IMHO. Specifically, it moves some clang-un-inlineable things
out to "pure" assembly code files.
I've tested this by building with clang, then running each binary on my
x86_64 test system with today's 6.10-rc1, and comparing the console and
dmesg output to a gcc-based build without these patches applied. Aside
from timestamps and virtual addresses, it looks identical.
Earlier cover letter:
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 v2:
1) Dropped my test_FISTTP.c patch, and picked up Muhammad's fix instead,
seeing as how that was posted first.
2) Updated patch descriptions to reflect that Valentin Obst's build fix
for LLVM [1] has already been merged into Linux main.
3) Minor wording and typo corrections in the commit logs throughout.
Changes since the first version:
1) Rebased onto Linux 6.10-rc1
Enjoy!
[1] https://lore.kernel.org/44428518-4d21-4de7-8587-04eceefb330d@nvidia.com
thanks,
John Hubbard
John Hubbard (6):
selftests/x86: fix Makefile dependencies to work 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
Muhammad Usama Anjum (1):
selftests: x86: test_FISTTP: use fisttps instead of ambiguous fisttp
tools/testing/selftests/x86/Makefile | 31 +++++++++++++++----
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, 87 insertions(+), 64 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: 795c58e4c7fc6163d8fb9f2baa86cfe898fa4b19
--
2.45.2
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