From: Sang-Heon Jeon <ekffu200098@gmail.com>
To: Ard Biesheuvel <ardb@kernel.org>, Borislav Petkov <bp@alien8.de>,
Chris Zankel <chris@zankel.net>,
Dave Hansen <dave.hansen@linux.intel.com>,
Ingo Molnar <mingo@redhat.com>,
John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>,
Madhavan Srinivasan <maddy@linux.ibm.com>,
Max Filippov <jcmvbkbc@gmail.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Rich Felker <dalias@libc.org>, Thomas Gleixner <tglx@kernel.org>,
Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Sang-Heon Jeon <ekffu200098@gmail.com>,
"Christophe Leroy (CS GROUP)" <chleroy@kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>,
Ilias Apalodimas <ilias.apalodimas@linaro.org>,
linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org, linux-sh@vger.kernel.org,
Nicholas Piggin <npiggin@gmail.com>,
x86@kernel.org
Subject: [PATCH 0/5] treewide: remove unreachable memblock_reserve() return value checks in early boot
Date: Wed, 17 Jun 2026 03:29:51 +0900 [thread overview]
Message-ID: <20260616182959.2429774-1-ekffu200098@gmail.com> (raw)
memblock_reserve() can only return an error after memblock_allow_resize()
has been called. Before that it either succeeds or panics, never returning
an error.
Before memblock_allow_resize() is called, the return value checks of
memblock_reserve() are unreachable and can be removed.
All the call sites are in different trees, so I split the change into one
patch per arch/subsystem. The patches are independent and can be applied
separately.
Sang-Heon Jeon (5):
x86/setup: remove unreachable memblock_reserve() return value check
sh: remove unreachable memblock_reserve() return value check
powerpc/fadump: remove unreachable memblock_reserve() return value
checks
xtensa: remove unreachable memblock_reserve() return value checks
Revert "tpm: do not ignore memblock_reserve return value"
arch/powerpc/kernel/fadump.c | 14 +++-----------
arch/sh/kernel/machine_kexec.c | 7 +------
arch/x86/kernel/setup.c | 7 ++-----
arch/xtensa/kernel/setup.c | 13 +++++++------
drivers/firmware/efi/tpm.c | 7 +------
5 files changed, 14 insertions(+), 34 deletions(-)
--
2.43.0
next reply other threads:[~2026-06-16 18:30 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-16 18:29 Sang-Heon Jeon [this message]
2026-06-16 18:29 ` [PATCH 3/5] powerpc/fadump: remove unreachable memblock_reserve() return value checks Sang-Heon Jeon
2026-06-17 9:27 ` Mukesh Kumar Chaurasiya
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=20260616182959.2429774-1-ekffu200098@gmail.com \
--to=ekffu200098@gmail.com \
--cc=ardb@kernel.org \
--cc=bp@alien8.de \
--cc=chleroy@kernel.org \
--cc=chris@zankel.net \
--cc=dalias@libc.org \
--cc=dave.hansen@linux.intel.com \
--cc=glaubitz@physik.fu-berlin.de \
--cc=hpa@zytor.com \
--cc=ilias.apalodimas@linaro.org \
--cc=jcmvbkbc@gmail.com \
--cc=linux-efi@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-sh@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=maddy@linux.ibm.com \
--cc=mingo@redhat.com \
--cc=mpe@ellerman.id.au \
--cc=npiggin@gmail.com \
--cc=tglx@kernel.org \
--cc=x86@kernel.org \
--cc=ysato@users.sourceforge.jp \
/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