From: Thierry Reding <thierry.reding@gmail.com>
Date: Wed, 6 Nov 2013 08:12:40 +0000 (+0100)
Subject: ARM: 7878/1: nommu: Implement dummy early_paging_init()
X-Git-Tag: firefly_0821_release~176^2~4990^2~1^2
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=70d42126877b9faa272d446a6de5917614c28dd9;p=firefly-linux-kernel-4.4.55.git

ARM: 7878/1: nommu: Implement dummy early_paging_init()

No-MMU configurations currenty fail to build because they are missing
the early_paging_init() symbol.

Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c
index 34d4ab217bab..5c668b7a31f9 100644
--- a/arch/arm/mm/nommu.c
+++ b/arch/arm/mm/nommu.c
@@ -295,6 +295,15 @@ void __init sanity_check_meminfo(void)
 	high_memory = __va(end - 1) + 1;
 }
 
+/*
+ * early_paging_init() recreates boot time page table setup, allowing machines
+ * to switch over to a high (>4G) address space on LPAE systems
+ */
+void __init early_paging_init(const struct machine_desc *mdesc,
+			      struct proc_info_list *procinfo)
+{
+}
+
 /*
  * paging_init() sets up the page tables, initialises the zone memory
  * maps, and sets up the zero page, bad page and bad page tables.