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FROMLIST: objtool: Split noinstr validation from --vmlinux

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This change adds a --noinstr flag to objtool to allow us to specify
that we're processing vmlinux.o without also enabling noinstr
validation. This is needed to avoid false positives with LTO when we
run objtool on vmlinux.o without CONFIG_DEBUG_ENTRY.

Bug: 145210207
Change-Id: I479c72d2733844d2059253035391a0c6e8ad7771
Link: https://lore.kernel.org/lkml/20201013003203.4168817-11-samitolvanen@google.com/
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
This commit is contained in:
Sami Tolvanen
2020-09-30 14:36:59 -07:00
parent 78a2549ecb
commit 8fdc2dc3ca
4 changed files with 5 additions and 4 deletions
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2
scripts/link-vmlinux.sh
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@@ -106,7 +106,7 @@ objtool_link()
local objtoolopt;
if [ -n "${CONFIG_VMLINUX_VALIDATION}" ]; then
objtoolopt="check --vmlinux"
objtoolopt="check --vmlinux --noinstr"
if [ -z "${CONFIG_FRAME_POINTER}" ]; then
objtoolopt="${objtoolopt} --no-fp"
fi