https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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Tip revision: b2776bf7149bddd1f4161f14f79520f17fc1d71d authored by Linus Torvalds on 07 December 2014, 22:21:05 UTC
Linux 3.18
Linux 3.18
Tip revision: b2776bf
tlb-ucv2.S
/*
* linux/arch/unicore32/mm/tlb-ucv2.S
*
* Code specific to PKUnity SoC and UniCore ISA
*
* Copyright (C) 2001-2010 GUAN Xue-tao
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/init.h>
#include <linux/linkage.h>
#include <asm/assembler.h>
#include <asm/page.h>
#include <asm/tlbflush.h>
#include "proc-macros.S"
/*
* __cpu_flush_user_tlb_range(start, end, vma)
*
* Invalidate a range of TLB entries in the specified address space.
*
* - start - start address (may not be aligned)
* - end - end address (exclusive, may not be aligned)
* - vma - vma_struct describing address range
*/
ENTRY(__cpu_flush_user_tlb_range)
#ifndef CONFIG_CPU_TLB_SINGLE_ENTRY_DISABLE
mov r0, r0 >> #PAGE_SHIFT @ align address
mov r0, r0 << #PAGE_SHIFT
vma_vm_flags r2, r2 @ get vma->vm_flags
1:
movc p0.c6, r0, #3
nop8
cand.a r2, #VM_EXEC @ Executable area ?
beq 2f
movc p0.c6, r0, #5
nop8
2:
add r0, r0, #PAGE_SZ
csub.a r0, r1
beb 1b
#else
movc p0.c6, r0, #2
nop8
cand.a r2, #VM_EXEC @ Executable area ?
beq 2f
movc p0.c6, r0, #4
nop8
2:
#endif
mov pc, lr
/*
* __cpu_flush_kern_tlb_range(start,end)
*
* Invalidate a range of kernel TLB entries
*
* - start - start address (may not be aligned)
* - end - end address (exclusive, may not be aligned)
*/
ENTRY(__cpu_flush_kern_tlb_range)
#ifndef CONFIG_CPU_TLB_SINGLE_ENTRY_DISABLE
mov r0, r0 >> #PAGE_SHIFT @ align address
mov r0, r0 << #PAGE_SHIFT
1:
movc p0.c6, r0, #3
nop8
movc p0.c6, r0, #5
nop8
add r0, r0, #PAGE_SZ
csub.a r0, r1
beb 1b
#else
movc p0.c6, r0, #2
nop8
movc p0.c6, r0, #4
nop8
#endif
mov pc, lr