/* SPDX-License-Identifier: GPL-2.0-only */
/*
* MM context support for the Hexagon architecture
*
* Copyright ( c ) 2010 - 2011 , The Linux Foundation . All rights reserved .
*/
#ifndef _ASM_MMU_CONTEXT_H
#define _ASM_MMU_CONTEXT_H
#include <linux/mm_types.h>
#include <asm /setup.h>
#include <asm /page.h>
#include <asm /pgalloc.h>
#include <asm /mem-layout.h>
/*
* VM port hides all TLB management , so " lazy TLB " isn ' t very
* meaningful . Even for ports to architectures with visble TLBs ,
* this is almost invariably a null function .
*
* mm - > context is set up by pgd_alloc , so no init_new_context required .
*/
/*
* Switch active mm context
*/
static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
struct task_struct *tsk)
{
int l1;
/*
* For virtual machine , we have to update system map if it ' s been
* touched .
*/
if (next->context.generation < prev->context.generation) {
for (l1 = MIN_KERNEL_SEG; l1 <= max_kernel_seg; l1++)
next->pgd[l1] = init_mm.pgd[l1];
next->context.generation = prev->context.generation;
}
__vmnewmap((void *)next->context.ptbase);
}
/*
* Activate new memory map for task
*/
#define activate_mm activate_mm
static inline void activate_mm(struct mm_struct *prev, struct mm_struct *next)
{
unsigned long flags;
local_irq_save(flags);
switch_mm(prev, next, current_thread_info()->task);
local_irq_restore(flags);
}
/* Generic hooks for arch_dup_mmap and arch_exit_mmap */
#include <asm -generic/mm_hooks.h>
#include <asm -generic/mmu_context.h>
#endif
Messung V0.5 in Prozent C=95 H=91 G=92
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(vorverarbeitet am 2026-10-11)
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