Commit c93db682 authored by Michal Kubecek's avatar Michal Kubecek Committed by Masahiro Yamada

kbuild: dummy-tools: adjust to stricter stackprotector check

Commit 3fb0fdb3 ("x86/stackprotector/32: Make the canary into a regular
percpu variable") modified the stackprotector check on 32-bit x86 to check
if gcc supports using %fs as canary. Adjust dummy-tools gcc script to pass
this new test by returning "%fs" rather than "%gs" if it detects
-mstack-protector-guard-reg=fs on command line.

Fixes: 3fb0fdb3 ("x86/stackprotector/32: Make the canary into a regular percpu variable")
Signed-off-by: default avatarMichal Kubecek <mkubecek@suse.cz>
Signed-off-by: default avatarMasahiro Yamada <masahiroy@kernel.org>
parent 98a499a1
...@@ -76,7 +76,11 @@ fi ...@@ -76,7 +76,11 @@ fi
if arg_contain -S "$@"; then if arg_contain -S "$@"; then
# For scripts/gcc-x86-*-has-stack-protector.sh # For scripts/gcc-x86-*-has-stack-protector.sh
if arg_contain -fstack-protector "$@"; then if arg_contain -fstack-protector "$@"; then
if arg_contain -mstack-protector-guard-reg=fs "$@"; then
echo "%fs"
else
echo "%gs" echo "%gs"
fi
exit 0 exit 0
fi fi
......
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