[PATCH] x86: Don't discard .exit.text and .exit.data at link-time

H.J. Lu
2020-01-30T18:00:55Z

Since .exit.text and .exit.data sections are discarded at runtime, we
should undefine EXIT_TEXT and EXIT_DATA to exclude .exit.text and
.exit.data sections from default discarded sections.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
---
arch/x86/kernel/vmlinux.lds.S | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index d1b942365d27..fb2c45cb1d1f 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -416,6 +416,12 @@ SECTIONS
STABS_DEBUG
DWARF_DEBUG

+ /* Sections to be discarded. EXIT_TEXT and EXIT_DATA discard at runtime.
+ * not link time. */
+#undef EXIT_TEXT
+#define EXIT_TEXT
+#undef EXIT_DATA
+#define EXIT_DATA
DISCARDS
/DISCARD/ : {
*(.eh_frame)
--
2.24.1