From: Aurelien Jarno <aurelien@aurel32.net>
Date: Wed, 7 Feb 2018 23:32:32 +0000 (+0000)
Subject: MIPS: increase MAX_PHYSMEM_BITS on Loongson 3 only
X-Git-Tag: archive/raspbian/4.15.4-1+rpi1~76
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=7e736414f2cf9e719aed122fe12189e1e42e5cef;p=linux.git

MIPS: increase MAX_PHYSMEM_BITS on Loongson 3 only

Commit c4617318 broke Loongson-2 support and maybe even more by increasing
the value of MAX_PHYSMEM_BITS. At it is currently only needed on
Loongson-3, define it conditionally.

Note: this should be replace by upstream fix when available.


Gbp-Pq: Topic features/mips
Gbp-Pq: Name MIPS-increase-MAX-PHYSMEM-BITS-on-Loongson-3-only.patch
---

diff --git a/arch/mips/include/asm/sparsemem.h b/arch/mips/include/asm/sparsemem.h
index b0686ca3d8b..6201021de32 100644
--- a/arch/mips/include/asm/sparsemem.h
+++ b/arch/mips/include/asm/sparsemem.h
@@ -12,7 +12,12 @@
 #else
 # define SECTION_SIZE_BITS	28
 #endif
-#define MAX_PHYSMEM_BITS	48
+
+#if defined(CONFIG_CPU_LOONGSON3)
+# define MAX_PHYSMEM_BITS	48
+#else
+# define MAX_PHYSMEM_BITS	35
+#endif
 
 #endif /* CONFIG_SPARSEMEM */
 #endif /* _MIPS_SPARSEMEM_H */