From: Hari Bathini <hbathini@linux.ibm.com>
To: linuxppc-dev <linuxppc-dev@lists.ozlabs.org>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>,
Christophe Leroy <christophe.leroy@csgroup.eu>,
"Naveen N. Rao" <naveen@kernel.org>,
Michael Ellerman <mpe@ellerman.id.au>,
linux-trace-kernel@vger.kernel.org,
Mark Rutland <mark.rutland@arm.com>,
Steven Rostedt <rostedt@goodmis.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
llvm@lists.linux.dev, Maryam Moghadas <maryammo@ca.ibm.com>
Subject: [PATCH v2 0/3] powerpc64/ftrace: fixes clang build issues
Date: Tue, 27 Jan 2026 14:19:23 +0530 [thread overview]
Message-ID: <20260127084926.34497-1-hbathini@linux.ibm.com> (raw)
Support for -fpatchable-function-entry on ppc64le was added in Clang
with [1]. Faced a couple of issues while building the linux kernel
with Clang though. Patches 1 & 2 address those issues. The last patch
provides workaround to ensure, an open issue [2] in Clang with
-fpatchable-function-entry support, does not impact the linux
ftrace subsystem.
[1] https://github.com/llvm/llvm-project/pull/151569
[2] https://github.com/llvm/llvm-project/issues/163706
Hari Bathini (3):
powerpc64: make clang cross-build friendly
powerpc64/ftrace: fix OOL stub count with clang
powerpc64/ftrace: workaround clang recording GEP in
__patchable_function_entries
arch/powerpc/Kconfig | 4 +--
arch/powerpc/kernel/trace/ftrace.c | 26 ++++++++++++++++---
....sh => check-fpatchable-function-entry.sh} | 0
arch/powerpc/tools/ftrace-gen-ool-stubs.sh | 4 +--
4 files changed, 26 insertions(+), 8 deletions(-)
rename arch/powerpc/tools/{gcc-check-fpatchable-function-entry.sh => check-fpatchable-function-entry.sh} (100%)
--
2.52.0
next reply other threads:[~2026-01-27 8:49 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-27 8:49 Hari Bathini [this message]
2026-01-27 8:49 ` [PATCH v2 1/3] powerpc64: make clang cross-build friendly Hari Bathini
2026-01-27 8:49 ` [PATCH v2 2/3] powerpc64/ftrace: fix OOL stub count with clang Hari Bathini
2026-01-27 8:49 ` [PATCH v2 3/3] powerpc64/ftrace: workaround clang recording GEP in __patchable_function_entries Hari Bathini
2026-01-30 6:18 ` [PATCH v2 0/3] powerpc64/ftrace: fixes clang build issues Venkat Rao Bagalkote
2026-03-11 2:13 ` Madhavan Srinivasan
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260127084926.34497-1-hbathini@linux.ibm.com \
--to=hbathini@linux.ibm.com \
--cc=christophe.leroy@csgroup.eu \
--cc=linux-trace-kernel@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=llvm@lists.linux.dev \
--cc=maddy@linux.ibm.com \
--cc=mark.rutland@arm.com \
--cc=maryammo@ca.ibm.com \
--cc=mhiramat@kernel.org \
--cc=mpe@ellerman.id.au \
--cc=naveen@kernel.org \
--cc=rostedt@goodmis.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox