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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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664eec400b
This patch includes page fault handler, mmap and fixup implementations. Signed-off-by: Vincent Chen <vincentc@andestech.com> Signed-off-by: Greentime Hu <greentime@andestech.com> Acked-by: Arnd Bergmann <arnd@arndb.de>
38 lines
673 B
ArmAsm
38 lines
673 B
ArmAsm
// SPDX-License-Identifier: GPL-2.0
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// Copyright (C) 2005-2017 Andes Technology Corporation
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#include <linux/linkage.h>
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#include <asm/page.h>
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.text
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ENTRY(copy_page)
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pushm $r2, $r10
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movi $r2, PAGE_SIZE >> 5
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.Lcopy_loop:
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lmw.bim $r3, [$r1], $r10
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smw.bim $r3, [$r0], $r10
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subi45 $r2, #1
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bnez38 $r2, .Lcopy_loop
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popm $r2, $r10
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ret
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ENDPROC(copy_page)
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ENTRY(clear_page)
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pushm $r1, $r9
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movi $r1, PAGE_SIZE >> 5
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movi55 $r2, #0
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movi55 $r3, #0
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movi55 $r4, #0
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movi55 $r5, #0
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movi55 $r6, #0
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movi55 $r7, #0
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movi55 $r8, #0
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movi55 $r9, #0
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.Lclear_loop:
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smw.bim $r2, [$r0], $r9
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subi45 $r1, #1
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bnez38 $r1, .Lclear_loop
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popm $r1, $r9
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ret
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ENDPROC(clear_page)
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