If CONFIG_FLATMEM=y on MIPS, pfn_valid() (and thus virt_addr_valid()) uses
min_low_pfn. However, min_low_pfn is not exported by the generic bootmem
code.
As of commit e52a29326462badd9ceec90a9eb2ac2a8550e02e ("aoe: avoid races
between device destruction and discovery"), aoeblk_open() uses
virt_addr_valid(), causing a link error in the modular case:
ERROR: "min_low_pfn" [drivers/block/aoe/aoe.ko] undefined!
Add a custom export to fix this, just like is done for ia64 in
arch/ia64/kernel/ia64_ksyms.c.
Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
---
http://kisskb.ellerman.id.au/kisskb/buildresult/7864918/
arch/mips/kernel/mips_ksyms.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/arch/mips/kernel/mips_ksyms.c b/arch/mips/kernel/mips_ksyms.c
index df1e3e4..8579bb8 100644
--- a/arch/mips/kernel/mips_ksyms.c
+++ b/arch/mips/kernel/mips_ksyms.c
@@ -60,3 +60,8 @@ EXPORT_SYMBOL(invalid_pte_table);
/* _mcount is defined in arch/mips/kernel/mcount.S */
EXPORT_SYMBOL(_mcount);
#endif
+
+#ifdef CONFIG_FLATMEM
+#include <linux/bootmem.h>
+EXPORT_SYMBOL(min_low_pfn); /* defined by bootmem.c, but not exported by generic code */
+#endif
--
1.7.0.4
