From: Nicholas Piggin <npiggin@gmail.com>
Date: Thu, 11 May 2017 15:56:48 +0000 (+1000)
Subject: powerpc/64: Place sfpr section explicitly with the linker script
X-Git-Tag: v4.13-rc1~111^2~139
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=e8c688251d0e8baca1cd68992c9ef4078a0361c8;p=linux-2.6-block.git

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 2f793be3d2b1..bcfda21c3179 100644
--- 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)