| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * TLB flush support for Hexagon |
| * |
| * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved. |
| */ |
| |
| #ifndef _ASM_TLBFLUSH_H |
| #define _ASM_TLBFLUSH_H |
| |
| #include <linux/mm.h> |
| #include <asm/processor.h> |
| |
| /* |
| * TLB flushing -- in "SMP", these routines get defined to be the |
| * ones from smp.c, else they are some local flavors. |
| */ |
| |
| /* |
| * These functions are commonly macros, but in the interests of |
| * VM vs. native implementation and code size, we simply declare |
| * the function prototypes here. |
| */ |
| extern void tlb_flush_all(void); |
| extern void flush_tlb_mm(struct mm_struct *mm); |
| extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr); |
| extern void flush_tlb_range(struct vm_area_struct *vma, |
| unsigned long start, unsigned long end); |
| extern void flush_tlb_kernel_range(unsigned long start, unsigned long end); |
| extern void flush_tlb_one(unsigned long); |
| |
| /* |
| * "This is called in munmap when we have freed up some page-table pages. |
| * We don't need to do anything here..." |
| * |
| * The VM kernel doesn't walk page tables, and they are passed to the VMM |
| * by logical address. There doesn't seem to be any possibility that they |
| * could be referenced by the VM kernel based on a stale mapping, since |
| * they would only be located by consulting the mm structure, and they |
| * will have been purged from that structure by the munmap. Seems like |
| * a noop on HVM as well. |
| */ |
| #define flush_tlb_pgtables(mm, start, end) |
| |
| #endif |
