From: Nicholas Piggin <npiggin@gmail.com>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>, linuxppc-dev@lists.ozlabs.org
Subject: [PATCH 1/4] powerpc/64: place sfpr section explicitly with the linker script
Date: Tue, 29 Nov 2016 15:39:39 +1100 [thread overview]
Message-ID: <20161129043942.13848-2-npiggin@gmail.com> (raw)
In-Reply-To: <20161129043942.13848-1-npiggin@gmail.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
arch/powerpc/kernel/vmlinux.lds.S | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index 861f4e1..f710d15 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -93,6 +93,14 @@ 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)
--
2.10.2
next prev parent reply other threads:[~2016-11-29 4:40 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-29 4:39 [PATCH 0/4] Try orphan section warning again Nicholas Piggin
2016-11-29 4:39 ` Nicholas Piggin [this message]
2016-11-29 4:39 ` [PATCH 2/4] powerpc/64: do not link crtsavres routines into vmlinux Nicholas Piggin
2016-11-29 4:39 ` [PATCH 3/4] powerpc/64: do not create new section for save/restore functions Nicholas Piggin
2016-11-29 4:39 ` [PATCH 4/4] powerpc: link warning for orphan sections Nicholas Piggin
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