From: Sami Tolvanen <samitolvanen@google.com>
Date: Tue, 13 Feb 2018 22:00:14 +0000 (-0800)
Subject: arm64: fix LD_DEAD_CODE_DATA_ELIMINATION
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=038eaf8ec176d4bb5c5267be39da31c6c4ac98a3;p=sagit-ice-cold%2Fkernel_xiaomi_msm8998.git

arm64: fix LD_DEAD_CODE_DATA_ELIMINATION

Keep .entry.tramp.text to avoid the "Entry trampoline text too big"
error while linking.

Bug: 62093296
Bug: 67506682
Change-Id: Idab3216244bd2f8537bb2a5bb47e25e8588394da
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
---

diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S
index 718f4c4be05c..fe14d821386f 100644
--- a/arch/arm64/kernel/vmlinux.lds.S
+++ b/arch/arm64/kernel/vmlinux.lds.S
@@ -61,7 +61,7 @@ jiffies = jiffies_64;
 #define TRAMP_TEXT					\
 	. = ALIGN(PAGE_SIZE);				\
 	VMLINUX_SYMBOL(__entry_tramp_text_start) = .;	\
-	*(.entry.tramp.text)				\
+	KEEP(*(.entry.tramp.text))			\
 	. = ALIGN(PAGE_SIZE);				\
 	VMLINUX_SYMBOL(__entry_tramp_text_end) = .;
 #else