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([110.9.142.4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2c43345e3ffsm141092685ad.71.2026.06.16.11.30.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Jun 2026 11:30:09 -0700 (PDT) From: Sang-Heon Jeon To: Ard Biesheuvel , Borislav Petkov , Chris Zankel , Dave Hansen , Ingo Molnar , John Paul Adrian Glaubitz , Madhavan Srinivasan , Max Filippov , Michael Ellerman , Rich Felker , Thomas Gleixner , Yoshinori Sato Cc: Sang-Heon Jeon , "Christophe Leroy (CS GROUP)" , "H. Peter Anvin" , Ilias Apalodimas , linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-sh@vger.kernel.org, Nicholas Piggin , 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 Message-ID: <20260616182959.2429774-1-ekffu200098@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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