linux-kernel - [PATCH 5/5] csky/mm: Fixup export invalid_pte

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Message-Id: <20191230082331.30976-5-guoren@kernel.org>
Date:   Mon, 30 Dec 2019 16:23:31 +0800
From:   guoren@...nel.org
To:     linux-csky@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        arnd@...db.de, Guo Ren <ren_guo@...ky.com>,
        Mo Qihui <qihui.mo@...isilicon.com>,
        Zhange Jian <zhang_jian5@...uatech.com>
Subject: [PATCH 5/5] csky/mm: Fixup export invalid_pte_table symbol

From: Guo Ren <ren_guo@...ky.com>

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 <ren_guo@...ky.com>
Cc: Mo Qihui <qihui.mo@...isilicon.com>
Cc: Zhange Jian <zhang_jian5@...uatech.com>
---
 arch/csky/mm/init.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/csky/mm/init.c b/arch/csky/mm/init.c
index 322eb7bd7962..dbb4b2dfe4b7 100644
--- a/arch/csky/mm/init.c
+++ b/arch/csky/mm/init.c
@@ -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);
-- 
2.17.0