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| author | Nicholas Piggin <npiggin@gmail.com> | 2017-05-11 19:40:40 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-05-30 06:59:51 +0200 |
| commit | 83a092cf95f28696ddc36c8add0cf03ac034897f (patch) | |
| tree | 61b7aab91d026e0722f1d347c9931d194cf3aaac /arch/powerpc/kernel/vmlinux.lds.S | |
| parent | powerpc/64: Tool to check head sections location sanity (diff) | |
| download | linux-83a092cf95f28696ddc36c8add0cf03ac034897f.tar.xz linux-83a092cf95f28696ddc36c8add0cf03ac034897f.zip | |
powerpc: Link warning for orphan sections
Add --orphan-handling=warn to final link flags. This ensures we can
handle all sections explicitly. This would have caught subtle breakage
such as 7de3b27bac47da9de08409df1d69664acbb72197 at build-time.
Also bring existing orphan sections into the fold:
- .text.hot and .text.unlikely are compiler generated sections.
- .sdata2, .dynsbss, .plt are used by PPC32
- We previously did not specify DWARF_DEBUG or STABS_DEBUG
- DWARF_DEBUG did not include all DWARF sections that can be emitted
- A number of sections are unused and can be discarded.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/vmlinux.lds.S')
| -rw-r--r-- | arch/powerpc/kernel/vmlinux.lds.S | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S index e69155f0db36..ace6b6579961 100644 --- a/arch/powerpc/kernel/vmlinux.lds.S +++ b/arch/powerpc/kernel/vmlinux.lds.S @@ -91,7 +91,7 @@ SECTIONS ALIGN_FUNCTION(); #endif /* careful! __ftr_alt_* sections need to be close to .text */ - *(.text .fixup __ftr_alt_* .ref.text) + *(.text.hot .text .text.fixup .text.unlikely .fixup __ftr_alt_* .ref.text); SCHED_TEXT CPUIDLE_TEXT LOCK_TEXT @@ -258,7 +258,9 @@ SECTIONS .data : AT(ADDR(.data) - LOAD_OFFSET) { DATA_DATA *(.sdata) + *(.sdata2) *(.got.plt) *(.got) + *(.plt) } #else .data : AT(ADDR(.data) - LOAD_OFFSET) { @@ -321,6 +323,16 @@ SECTIONS _end = . ; PROVIDE32 (end = .); - /* Sections to be discarded. */ + STABS_DEBUG + + DWARF_DEBUG + DISCARDS + /DISCARD/ : { + *(*.EMB.apuinfo) + *(.glink .iplt .plt .rela* .comment) + *(.gnu.version*) + *(.gnu.attributes) + *(.eh_frame) + } } |