51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
|
/*
|
||
|
|
* Copyright 2010 Tilera Corporation. All Rights Reserved.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public License
|
||
|
|
* as published by the Free Software Foundation, version 2.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful, but
|
||
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
|
||
|
|
* NON INFRINGEMENT. See the GNU General Public License for
|
||
|
|
* more details.
|
||
|
|
*
|
||
|
|
* Structure definitions for migration, exposed here for use by
|
||
|
|
* arch/tile/kernel/asm-offsets.c.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef MM_MIGRATE_H
|
||
|
|
#define MM_MIGRATE_H
|
||
|
|
|
||
|
|
#include <linux/cpumask.h>
|
||
|
|
#include <hv/hypervisor.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This function is used as a helper when setting up the initial
|
||
|
|
* page table (swapper_pg_dir).
|
||
|
|
*/
|
||
|
|
extern int flush_and_install_context(HV_PhysAddr page_table, HV_PTE access,
|
||
|
|
HV_ASID asid,
|
||
|
|
const unsigned long *cpumask);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This function supports migration as a "helper" as follows:
|
||
|
|
*
|
||
|
|
* - Set the stack PTE itself to "migrating".
|
||
|
|
* - Do a global TLB flush for (va,length) and the specified ASIDs.
|
||
|
|
* - Do a cache-evict on all necessary cpus.
|
||
|
|
* - Write the new stack PTE.
|
||
|
|
*
|
||
|
|
* Note that any non-NULL pointers must not point to the page that
|
||
|
|
* is handled by the stack_pte itself.
|
||
|
|
*/
|
||
|
|
extern int homecache_migrate_stack_and_flush(pte_t stack_pte, unsigned long va,
|
||
|
|
size_t length, pte_t *stack_ptep,
|
||
|
|
const struct cpumask *cache_cpumask,
|
||
|
|
const struct cpumask *tlb_cpumask,
|
||
|
|
HV_Remote_ASID *asids,
|
||
|
|
int asidcount);
|
||
|
|
|
||
|
|
#endif /* MM_MIGRATE_H */
|