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Fri, 09 Oct 2026 16:29:24 -0700 (PDT) Received: from ryzen.lan ([2601:644:8000:7a86::e34]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3ab38f2f866sm7121939a91.10.2026.10.09.16.29.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 09 Oct 2026 16:29:24 -0700 (PDT) From: Rosen Penev To: linux-mips@vger.kernel.org Cc: Thomas Bogendoerfer , linux-kernel@vger.kernel.org (open list) Subject: [PATCH] MIPS: boot: compressed: fix the vmlinuz link with ld.lld Date: Fri, 9 Oct 2026 16:29:23 -0700 Message-ID: <20261009232923.655907-1-rosenp@gmail.com> X-Mailer: git-send-email 2.56.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit ld.lld cannot link a 32-bit executable at a sign-extended address. With a sign-extended ZBOOT_LOAD_ADDRESS, such as the BCM47XX default of 0xffffffff80400000, the vmlinuz link fails: ld.lld: error: section .text at 0xffffffff80400000 of size 0x35a4 exceeds available address space arch/mips/Makefile already avoids this for vmlinux by linking at LINKER_LOAD_ADDRESS, which drops the upper 32 bits on 32-bit kernels. Do the same for vmlinuz. The address computed by calc_vmlinuz_load_addr is already derived from LINKER_LOAD_ADDRESS, which is why only an explicit ZBOOT_LOAD_ADDRESS is affected. Assisted-by: LLM Signed-off-by: Rosen Penev --- arch/mips/boot/compressed/Makefile | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/arch/mips/boot/compressed/Makefile b/arch/mips/boot/compressed/Makefile index e0b8ec9a9516..ee554eaaa18f 100644 --- a/arch/mips/boot/compressed/Makefile +++ b/arch/mips/boot/compressed/Makefile @@ -96,12 +96,20 @@ VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \ endif UIMAGE_LOADADDR = $(VMLINUZ_LOAD_ADDRESS) +# Like LINKER_LOAD_ADDRESS in arch/mips/Makefile: ld.lld cannot link a +# 32-bit executable at a sign-extended address, so drop the upper 32 bits. +ifdef CONFIG_64BIT +VMLINUZ_LINK_ADDRESS = $(VMLINUZ_LOAD_ADDRESS) +else +VMLINUZ_LINK_ADDRESS = $(subst 0xffffffff,0x,$(VMLINUZ_LOAD_ADDRESS)) +endif + vmlinuzobjs-y += $(obj)/piggy.o targets += ../../../../vmlinuz quiet_cmd_zld = LD $@ - cmd_zld = $(LD) $(KBUILD_LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@ + cmd_zld = $(LD) $(KBUILD_LDFLAGS) -Ttext $(VMLINUZ_LINK_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@ quiet_cmd_strip = STRIP $@ cmd_strip = $(STRIP) -s $@ -- 2.56.0