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

[H.J. Lu]

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@xxxxxxxxx>
---
 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