From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Date: Wed, 30 Mar 2016 14:45:57 +0000 (+0200)
Subject: arm64: mm: free __init memory via the linear mapping
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=d386825c959efeaae3315c25dd2d2874c68829c7;p=openwrt%2Fstaging%2Fblogic.git

arm64: mm: free __init memory via the linear mapping

The implementation of free_initmem_default() expects __init_begin
and __init_end to be covered by the linear mapping, which is no
longer the case. So open code it instead, using addresses that are
explicitly translated from kernel virtual to linear virtual.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
---

diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index 82ced5fa1e66..89376f3c65a3 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -452,7 +452,8 @@ void __init mem_init(void)
 
 void free_initmem(void)
 {
-	free_initmem_default(0);
+	free_reserved_area(__va(__pa(__init_begin)), __va(__pa(__init_end)),
+			   0, "unused kernel");
 	fixup_init();
 }