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[60.242.147.73]) by smtp.gmail.com with ESMTPSA id n14sm4724811pfa.138.2021.06.11.04.10.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 11 Jun 2021 04:10:34 -0700 (PDT) From: Nicholas Piggin To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH] powerpc/build: vdso linker warning for orphan sections Date: Fri, 11 Jun 2021 21:10:29 +1000 Message-Id: <20210611111029.1058789-1-npiggin@gmail.com> X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Nicholas Piggin Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Add --orphan-handling=warn for vdsos, and adjust vdso linker scripts to deal with orphan sections. Signed-off-by: Nicholas Piggin --- arch/powerpc/kernel/vdso32/Makefile | 2 +- arch/powerpc/kernel/vdso32/vdso32.lds.S | 3 ++- arch/powerpc/kernel/vdso64/Makefile | 2 +- arch/powerpc/kernel/vdso64/vdso64.lds.S | 3 ++- 4 files changed, 6 insertions(+), 4 deletions(-) diff --git a/arch/powerpc/kernel/vdso32/Makefile b/arch/powerpc/kernel/vdso32/Makefile index 7d9a6fee0e3d..403033013848 100644 --- a/arch/powerpc/kernel/vdso32/Makefile +++ b/arch/powerpc/kernel/vdso32/Makefile @@ -66,7 +66,7 @@ include/generated/vdso32-offsets.h: $(obj)/vdso32.so.dbg FORCE # actual build commands quiet_cmd_vdso32ld_and_check = VDSO32L $@ - cmd_vdso32ld_and_check = $(VDSOCC) $(c_flags) $(CC32FLAGS) -o $@ -Wl,-T$(filter %.lds,$^) $(filter %.o,$^) ; $(cmd_vdso_check) + cmd_vdso32ld_and_check = $(VDSOCC) $(c_flags) $(CC32FLAGS) -o $@ -Wl,-T$(filter %.lds,$^) $(filter %.o,$^) $(if $(CONFIG_LD_ORPHAN_WARN), -Wl$(comma)--orphan-handling=warn) ; $(cmd_vdso_check) quiet_cmd_vdso32as = VDSO32A $@ cmd_vdso32as = $(VDSOCC) $(a_flags) $(CC32FLAGS) -c -o $@ $< quiet_cmd_vdso32cc = VDSO32C $@ diff --git a/arch/powerpc/kernel/vdso32/vdso32.lds.S b/arch/powerpc/kernel/vdso32/vdso32.lds.S index 58e0099f70f4..b42e8759e67a 100644 --- a/arch/powerpc/kernel/vdso32/vdso32.lds.S +++ b/arch/powerpc/kernel/vdso32/vdso32.lds.S @@ -85,9 +85,10 @@ SECTIONS /DISCARD/ : { *(.note.GNU-stack) + *(.branch_lt) *(.data .data.* .gnu.linkonce.d.* .sdata*) *(.bss .sbss .dynbss .dynsbss) - *(.got1) + *(.got1 .glink .iplt .rela*) } } diff --git a/arch/powerpc/kernel/vdso64/Makefile b/arch/powerpc/kernel/vdso64/Makefile index d783c07e558f..980dfd631a08 100644 --- a/arch/powerpc/kernel/vdso64/Makefile +++ b/arch/powerpc/kernel/vdso64/Makefile @@ -59,4 +59,4 @@ include/generated/vdso64-offsets.h: $(obj)/vdso64.so.dbg FORCE # actual build commands quiet_cmd_vdso64ld_and_check = VDSO64L $@ - cmd_vdso64ld_and_check = $(CC) $(c_flags) -o $@ -Wl,-T$(filter %.lds,$^) $(filter %.o,$^); $(cmd_vdso_check) + cmd_vdso64ld_and_check = $(CC) $(c_flags) -o $@ -Wl,-T$(filter %.lds,$^) $(filter %.o,$^) $(if $(CONFIG_LD_ORPHAN_WARN), -Wl$(comma)--orphan-handling=warn) ; $(cmd_vdso_check) diff --git a/arch/powerpc/kernel/vdso64/vdso64.lds.S b/arch/powerpc/kernel/vdso64/vdso64.lds.S index 0288cad428b0..3750b3b15b51 100644 --- a/arch/powerpc/kernel/vdso64/vdso64.lds.S +++ b/arch/powerpc/kernel/vdso64/vdso64.lds.S @@ -33,7 +33,7 @@ SECTIONS . = ALIGN(16); .text : { *(.text .stub .text.* .gnu.linkonce.t.* __ftr_alt_*) - *(.sfpr .glink) + *(.sfpr) } :text PROVIDE(__etext = .); PROVIDE(_etext = .); @@ -87,6 +87,7 @@ SECTIONS *(.data .data.* .gnu.linkonce.d.* .sdata*) *(.bss .sbss .dynbss .dynsbss) *(.opd) + *(.glink .iplt .plt .rela*) } } -- 2.23.0