From: Nicholas Piggin <npiggin@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Nicholas Piggin <npiggin@gmail.com>
Subject: [PATCH] powerpc/build: vdso linker warning for orphan sections
Date: Fri, 9 Jun 2023 15:10:02 +1000 [thread overview]
Message-ID: <20230609051002.3342-1-npiggin@gmail.com> (raw)
Add --orphan-handlin for vdsos, and adjust vdso linker scripts to deal
with orphan sections.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
arch/powerpc/kernel/vdso/Makefile | 2 ++
arch/powerpc/kernel/vdso/vdso32.lds.S | 4 +++-
arch/powerpc/kernel/vdso/vdso64.lds.S | 4 +++-
3 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/kernel/vdso/Makefile b/arch/powerpc/kernel/vdso/Makefile
index 4c3f34485f08..23ee96106537 100644
--- a/arch/powerpc/kernel/vdso/Makefile
+++ b/arch/powerpc/kernel/vdso/Makefile
@@ -56,6 +56,8 @@ KCSAN_SANITIZE := n
ccflags-y := -fno-common -fno-builtin
ldflags-y := -Wl,--hash-style=both -nostdlib -shared -z noexecstack
ldflags-$(CONFIG_LD_IS_LLD) += $(call cc-option,--ld-path=$(LD),-fuse-ld=lld)
+ldflags-$(CONFIG_LD_ORPHAN_WARN) += -Wl,--orphan-handling=$(CONFIG_LD_ORPHAN_WARN_LEVEL)
+
# Filter flags that clang will warn are unused for linking
ldflags-y += $(filter-out $(CC_AUTO_VAR_INIT_ZERO_ENABLER) $(CC_FLAGS_FTRACE) -Wa$(comma)%, $(KBUILD_CFLAGS))
diff --git a/arch/powerpc/kernel/vdso/vdso32.lds.S b/arch/powerpc/kernel/vdso/vdso32.lds.S
index bc0be274a9ac..426e1ccc6971 100644
--- a/arch/powerpc/kernel/vdso/vdso32.lds.S
+++ b/arch/powerpc/kernel/vdso/vdso32.lds.S
@@ -83,9 +83,11 @@ SECTIONS
/DISCARD/ : {
*(.note.GNU-stack)
+ *(*.EMB.apuinfo)
+ *(.branch_lt)
*(.data .data.* .gnu.linkonce.d.* .sdata*)
*(.bss .sbss .dynbss .dynsbss)
- *(.got1)
+ *(.got1 .glink .iplt .rela*)
}
}
diff --git a/arch/powerpc/kernel/vdso/vdso64.lds.S b/arch/powerpc/kernel/vdso/vdso64.lds.S
index 744ae5363e6c..bda6c8cdd459 100644
--- a/arch/powerpc/kernel/vdso/vdso64.lds.S
+++ b/arch/powerpc/kernel/vdso/vdso64.lds.S
@@ -32,7 +32,7 @@ SECTIONS
. = ALIGN(16);
.text : {
*(.text .stub .text.* .gnu.linkonce.t.* __ftr_alt_*)
- *(.sfpr .glink)
+ *(.sfpr)
} :text
PROVIDE(__etext = .);
PROVIDE(_etext = .);
@@ -81,10 +81,12 @@ SECTIONS
/DISCARD/ : {
*(.note.GNU-stack)
+ *(*.EMB.apuinfo)
*(.branch_lt)
*(.data .data.* .gnu.linkonce.d.* .sdata*)
*(.bss .sbss .dynbss .dynsbss)
*(.opd)
+ *(.glink .iplt .plt .rela*)
}
}
--
2.40.1
next reply other threads:[~2023-06-09 5:11 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-09 5:10 Nicholas Piggin [this message]
2023-07-03 5:26 ` [PATCH] powerpc/build: vdso linker warning for orphan sections Michael Ellerman
2023-07-17 19:43 ` John Ogness
2023-07-18 12:59 ` Michael Ellerman
2023-07-18 14:22 ` John Ogness
2023-07-19 11:55 ` Michael Ellerman
2023-07-19 17:10 ` John Ogness
-- strict thread matches above, loose matches on Subject: below --
2021-06-11 11:10 Nicholas Piggin
2021-06-17 1:48 ` Nicholas Piggin
2020-03-03 1:27 Nicholas Piggin
2020-07-30 12:50 ` Michael Ellerman
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