From: Thorsten Blum <thorsten.blum@linux.dev>
To: Thomas Gleixner <tglx@kernel.org>, Ingo Molnar <mingo@redhat.com>,
Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Ard Biesheuvel <ardb@kernel.org>,
Nathan Chancellor <nathan@kernel.org>,
Nicolas Schier <nsc@kernel.org>
Cc: x86@kernel.org, linux-kernel@vger.kernel.org,
Thorsten Blum <thorsten.blum@linux.dev>
Subject: [PATCH 4/4] x86/boot/compressed: Enable -Wunused
Date: Sun, 21 Jun 2026 16:41:21 +0200 [thread overview]
Message-ID: <20260621144116.224010-10-thorsten.blum@linux.dev> (raw)
In-Reply-To: <20260621144116.224010-6-thorsten.blum@linux.dev>
arch/x86/boot/compressed/Makefile resets the CFLAGS for this directory,
but does not re-enable -Wunused. Therefore, unused variables and static
functions in arch/x86/boot/compressed/ currently do not emit warnings.
Add -Wunused to warn about these, and -Wno-unused-but-set-variable as
well as -Wno-unused-const-variable to match the W=0 kernel defaults.
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
---
arch/x86/boot/compressed/Makefile | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
index 07e0e64b9a98..c1315a7b712c 100644
--- a/arch/x86/boot/compressed/Makefile
+++ b/arch/x86/boot/compressed/Makefile
@@ -28,6 +28,9 @@ KBUILD_CFLAGS := -m$(BITS) -O2 $(CLANG_FLAGS)
KBUILD_CFLAGS += $(CC_FLAGS_DIALECT)
KBUILD_CFLAGS += -fno-strict-aliasing -fPIE
KBUILD_CFLAGS += -Wundef
+KBUILD_CFLAGS += -Wunused
+KBUILD_CFLAGS += -Wno-unused-but-set-variable
+KBUILD_CFLAGS += -Wno-unused-const-variable
KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
cflags-$(CONFIG_X86_32) := -march=i386
cflags-$(CONFIG_X86_64) := -mcmodel=small -mno-red-zone
prev parent reply other threads:[~2026-06-21 14:42 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-21 14:41 [PATCH 0/4] x86/boot/compressed: Enable -Wunused and remove unused variables Thorsten Blum
2026-06-21 14:41 ` [PATCH 1/4] x86/boot/compressed: Remove unused variables in EFI helpers Thorsten Blum
2026-06-21 14:41 ` [PATCH 2/4] x86/boot/compressed: Clean up EFI RSDP lookup in efi_get_rsdp_addr() Thorsten Blum
2026-06-21 14:41 ` [PATCH 3/4] x86/boot/compressed: Mark process_mem_region() index __maybe_unused Thorsten Blum
2026-06-21 14:41 ` Thorsten Blum [this message]
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=20260621144116.224010-10-thorsten.blum@linux.dev \
--to=thorsten.blum@linux.dev \
--cc=ardb@kernel.org \
--cc=bp@alien8.de \
--cc=dave.hansen@linux.intel.com \
--cc=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=nathan@kernel.org \
--cc=nsc@kernel.org \
--cc=tglx@kernel.org \
--cc=x86@kernel.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.