powerpc/64: Place sfpr section explicitly with the linker script

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index 2f793be3d2b1db7ca56b43f7d4c346b65e1c6927..bcfda21c3179b6b6e5e077c1ec413c2d1a0a3873 100644 (file)
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -115,6 +115,14 @@ SECTIONS
                KPROBES_TEXT
                IRQENTRY_TEXT
                SOFTIRQENTRY_TEXT
+               /*
+                * -Os builds call FP save/restore functions. The powerpc64
+                * linker generates those on demand in the .sfpr section.
+                * .sfpr gets placed at the beginning of a group of input
+                * sections, which can break start-of-text offset if it is
+                * included with the main text sections, so put it by itself.
+                */
+               *(.sfpr);
                MEM_KEEP(init.text)
                MEM_KEEP(exit.text)