41 lines
852 B
ArmAsm
41 lines
852 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2012 ARM Ltd.
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*/
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#include <linux/linkage.h>
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#include <linux/const.h>
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#include <asm/assembler.h>
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#include <asm/page.h>
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#include <asm/cpufeature.h>
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#include <asm/alternative.h>
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#include <asm/asm-extable.h>
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#include <asm/asm-uaccess.h>
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/*
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* Copy a page from src to dest (both are page aligned) with memory error safe
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*
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* Parameters:
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* x0 - dest
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* x1 - src
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* Returns:
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* x0 - Return 0 if copy success, or -EFAULT if anything goes wrong
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* while copying.
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*/
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.macro ldp1 reg1, reg2, ptr, val
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KERNEL_ME_SAFE(9998f, ldp \reg1, \reg2, [\ptr, \val])
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.endm
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SYM_FUNC_START(__pi_copy_mc_page)
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#include "copy_page_template.S"
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mov x0, #0
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ret
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9998: mov x0, #-EFAULT
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ret
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SYM_FUNC_END(__pi_copy_mc_page)
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SYM_FUNC_ALIAS(copy_mc_page, __pi_copy_mc_page)
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EXPORT_SYMBOL(copy_mc_page)
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