The patch titled
Subject: x86, mm: fix NOHIGHMEM && X86_PAE build config for native_pud_clear()
has been added to the -mm tree. Its filename is
x86-mm-fix-nohighmem-x86_pae-build-config-for-native_pud_clear.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/x86-mm-fix-nohighmem-x86_pae-build-config-for-native_pud_clear.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/x86-mm-fix-nohighmem-x86_pae-build-config-for-native_pud_clear.patch
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From: Dave Jiang <dave.jiang@xxxxxxxxx>
Subject: x86, mm: fix NOHIGHMEM && X86_PAE build config for native_pud_clear()
Looks like a 32bit x86 build failure case where X86_PAE and NOHIMEM
are on. This was reported by kbuild test bot.
In file included from include/linux/mm.h:68:0,
from include/linux/highmem.h:7,
from include/linux/bio.h:21,
from include/linux/writeback.h:205,
from include/linux/memcontrol.h:30,
from include/linux/swap.h:8,
from include/linux/suspend.h:4,
from arch/x86/kernel/asm-offsets.c:12:
arch/x86/include/asm/pgtable.h: In function 'native_local_pudp_get_and_clear':
>> arch/x86/include/asm/pgtable.h:888:2: error: implicit declaration of function 'native_pud_clear' [-Werror=implicit-function-declaration]
native_pud_clear(pudp);
^~~~~~~~~~~~~~~~
Fixes: a00cc7d9dd93d ("mm, x86: add support for PUD-sized transparent hugepages")
Link: http://lkml.kernel.org/r/148883869853.70777.12180810304957921737.stgit@xxxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Dave Jiang <dave.jiang@xxxxxxxxx>
Cc: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/include/asm/pgtable-3level.h | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff -puN arch/x86/include/asm/pgtable-3level.h~x86-mm-fix-nohighmem-x86_pae-build-config-for-native_pud_clear arch/x86/include/asm/pgtable-3level.h
--- a/arch/x86/include/asm/pgtable-3level.h~x86-mm-fix-nohighmem-x86_pae-build-config-for-native_pud_clear
+++ a/arch/x86/include/asm/pgtable-3level.h
@@ -121,8 +121,9 @@ static inline void native_pmd_clear(pmd_
*(tmp + 1) = 0;
}
-#if !defined(CONFIG_SMP) || (defined(CONFIG_HIGHMEM64G) && \
- defined(CONFIG_PARAVIRT))
+#if !defined(CONFIG_SMP) || \
+ (defined(CONFIG_HIGHMEM64G) && defined(CONFIG_PARAVIRT)) || \
+ (defined(CONFIG_NOHIGHMEM) && defined(CONFIG_X86_PAE))
static inline void native_pud_clear(pud_t *pudp)
{
}
_
Patches currently in -mm which might be from dave.jiang@xxxxxxxxx are
x86-mm-fix-nohighmem-x86_pae-build-config-for-native_pud_clear.patch
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