32942757bd
Adds a function to encapsulate the locking, removal of write-protection, word write, cache flush and invalidate and restoration of write protection. This is a convenience function for callers needing to update a word in kernel text space. Change-Id: I9832f0ff659ddc62c55819af5318c94b70f5c11c Signed-off-by: Neil Leeder <nleeder@codeaurora.org>
32 lines
1.2 KiB
C
32 lines
1.2 KiB
C
/*
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* Copyright (c) 2011, Code Aurora Forum. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef _MMU_WRITEABLE_H
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#define _MMU_WRITEABLE_H
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#ifdef CONFIG_STRICT_MEMORY_RWX
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void mem_text_writeable_spinlock(unsigned long *flags);
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void mem_text_address_writeable(unsigned long);
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void mem_text_address_restore(void);
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void mem_text_writeable_spinunlock(unsigned long *flags);
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#else
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static inline void mem_text_writeable_spinlock(unsigned long *flags) {};
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static inline void mem_text_address_writeable(unsigned long addr) {};
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static inline void mem_text_address_restore(void) {};
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static inline void mem_text_writeable_spinunlock(unsigned long *flags) {};
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#endif
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void mem_text_write_kernel_word(unsigned long *addr, unsigned long word);
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#endif
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