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csky/mm: Fixup export invalid_pte_table symbol

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[ Upstream commit 7f4a567332f035ab16b29010fbd04a0f10183c77 ]

There is no present bit in csky pmd hardware, so we need to prepare invalid_pte_table
for empty pmd entry and the functions (pmd_none & pmd_present) in pgtable.h need
invalid_pte_talbe to get result. If a module use these functions, we need export the
symbol for it.

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Cc: Mo Qihui <qihui.mo@verisilicon.com>
Cc: Zhange Jian <zhang_jian5@dahuatech.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Guo Ren 2019-12-30 15:53:37 +08:00 committed by Greg Kroah-Hartman
parent 229fa6c8d2
commit 6db7f3bdc1
1 changed files with 1 additions and 0 deletions
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arch/csky/mm/init.c
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@ -31,6 +31,7 @@
pgd_t swapper_pg_dir[PTRS_PER_PGD] __page_aligned_bss;
pte_t invalid_pte_table[PTRS_PER_PTE] __page_aligned_bss;
EXPORT_SYMBOL(invalid_pte_table);
unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)]
__page_aligned_bss;
EXPORT_SYMBOL(empty_zero_page);