Messages in this thread Patch in this message | | | From | "Alastair D'Silva" <> | Subject | [PATCH 1/1] arch/powerpc: Don't assume start_text & head_end align | Date | Wed, 13 Mar 2019 14:38:51 +1100 |
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From: Alastair D'Silva <alastair@d-silva.org>
When building LTO kernels, the start_text symbol is not guaranteed to mark the end of the head section.
Instead, look explicitly for __head_end.
Signed-off-by: Alastair D'Silva <alastair@d-silva.org> --- arch/powerpc/tools/head_check.sh | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/powerpc/tools/head_check.sh b/arch/powerpc/tools/head_check.sh index ad9e57209aa4..1b0f634038c3 100644 --- a/arch/powerpc/tools/head_check.sh +++ b/arch/powerpc/tools/head_check.sh @@ -44,7 +44,7 @@ nm="$1" vmlinux="$2" # gcc-4.6-era toolchain make _stext an A (absolute) symbol rather than T -$nm "$vmlinux" | grep -e " [TA] _stext$" -e " t start_first_256B$" -e " a text_start$" -e " t start_text$" -m4 > .tmp_symbols.txt +$nm "$vmlinux" | grep -e " [TA] _stext$" -e " t start_first_256B$" -e " a text_start$" -e " T __head_end$" -m4 > .tmp_symbols.txt vma=$(cat .tmp_symbols.txt | grep -e " [TA] _stext$" | cut -d' ' -f1) @@ -63,12 +63,12 @@ fi top_vma=$(echo $vma | cut -d'0' -f1) -expected_start_text_addr=$(cat .tmp_symbols.txt | grep " a text_start$" | cut -d' ' -f1 | sed "s/^0/$top_vma/") +expected_head_end_addr=$(cat .tmp_symbols.txt | grep " a text_start$" | cut -d' ' -f1 | sed "s/^0/$top_vma/") -start_text_addr=$(cat .tmp_symbols.txt | grep " t start_text$" | cut -d' ' -f1) +head_end_addr=$(cat .tmp_symbols.txt | grep " T __head_end$" | cut -d' ' -f1) -if [ "$start_text_addr" != "$expected_start_text_addr" ]; then - echo "ERROR: start_text address is $start_text_addr, should be $expected_start_text_addr" +if [ "$head_end_addr" != "$expected_head_end_addr" ]; then + echo "ERROR: __head_end address is $head_end_addr, should be $expected_head_end_addr" echo "ERROR: try to enable LD_HEAD_STUB_CATCH config option" echo "ERROR: see comments in arch/powerpc/tools/head_check.sh" -- 2.20.1
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