Release 4.14 arch/powerpc/include/asm/mmu_context.h
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_POWERPC_MMU_CONTEXT_H
#define __ASM_POWERPC_MMU_CONTEXT_H
#ifdef __KERNEL__
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
#include <asm/mmu.h>
#include <asm/cputable.h>
#include <asm/cputhreads.h>
/*
* Most if the context management is out of line
*/
extern int init_new_context(struct task_struct *tsk, struct mm_struct *mm);
extern void destroy_context(struct mm_struct *mm);
#ifdef CONFIG_SPAPR_TCE_IOMMU
struct mm_iommu_table_group_mem_t;
extern int isolate_lru_page(struct page *page); /* from internal.h */
extern bool mm_iommu_preregistered(struct mm_struct *mm);
extern long mm_iommu_get(struct mm_struct *mm,
unsigned long ua, unsigned long entries,
struct mm_iommu_table_group_mem_t **pmem);
extern long mm_iommu_put(struct mm_struct *mm,
struct mm_iommu_table_group_mem_t *mem);
extern void mm_iommu_init(struct mm_struct *mm);
extern void mm_iommu_cleanup(struct mm_struct *mm);
extern struct mm_iommu_table_group_mem_t *mm_iommu_lookup(struct mm_struct *mm,
unsigned long ua, unsigned long size);
extern struct mm_iommu_table_group_mem_t *mm_iommu_lookup_rm(
struct mm_struct *mm, unsigned long ua, unsigned long size);
extern struct mm_iommu_table_group_mem_t *mm_iommu_find(struct mm_struct *mm,
unsigned long ua, unsigned long entries);
extern long mm_iommu_ua_to_hpa(struct mm_iommu_table_group_mem_t *mem,
unsigned long ua, unsigned long *hpa);
extern long mm_iommu_ua_to_hpa_rm(struct mm_iommu_table_group_mem_t *mem,
unsigned long ua, unsigned long *hpa);
extern long mm_iommu_mapped_inc(struct mm_iommu_table_group_mem_t *mem);
extern void mm_iommu_mapped_dec(struct mm_iommu_table_group_mem_t *mem);
#endif
extern void switch_slb(struct task_struct *tsk, struct mm_struct *mm);
extern void set_context(unsigned long id, pgd_t *pgd);
#ifdef CONFIG_PPC_BOOK3S_64
extern void radix__switch_mmu_context(struct mm_struct *prev,
struct mm_struct *next);
static inline void switch_mmu_context(struct mm_struct *prev,
struct mm_struct *next,
struct task_struct *tsk)
{
if (radix_enabled())
return radix__switch_mmu_context(prev, next);
return switch_slb(tsk, next);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Aneesh Kumar K.V | 43 | 100.00% | 2 | 100.00% |
| Total | 43 | 100.00% | 2 | 100.00% |
extern int hash__alloc_context_id(void);
extern void hash__reserve_context_id(int id);
extern void __destroy_context(int context_id);
static inline void mmu_context_init(void) { }
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Benjamin Herrenschmidt | 8 | 100.00% | 1 | 100.00% |
| Total | 8 | 100.00% | 1 | 100.00% |
#else
extern void switch_mmu_context(struct mm_struct *prev, struct mm_struct *next,
struct task_struct *tsk);
extern unsigned long __init_new_context(void);
extern void __destroy_context(unsigned long context_id);
extern void mmu_context_init(void);
#endif
#if defined(CONFIG_KVM_BOOK3S_HV_POSSIBLE) && defined(CONFIG_PPC_RADIX_MMU)
extern void radix_kvm_prefetch_workaround(struct mm_struct *mm);
#else
static inline void radix_kvm_prefetch_workaround(struct mm_struct *mm) { }
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Benjamin Herrenschmidt | 11 | 100.00% | 1 | 100.00% |
| Total | 11 | 100.00% | 1 | 100.00% |
#endif
extern void switch_cop(struct mm_struct *next);
extern int use_cop(unsigned long acop, struct mm_struct *mm);
extern void drop_cop(unsigned long acop, struct mm_struct *mm);
extern void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next,
struct task_struct *tsk);
static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
struct task_struct *tsk)
{
unsigned long flags;
local_irq_save(flags);
switch_mm_irqs_off(prev, next, tsk);
local_irq_restore(flags);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David Gibson | 45 | 100.00% | 1 | 100.00% |
| Total | 45 | 100.00% | 1 | 100.00% |
#define switch_mm_irqs_off switch_mm_irqs_off
#define deactivate_mm(tsk,mm) do { } while (0)
/*
* After we have set current->mm to a new value, this activates
* the context for the new mm so we see the new mappings.
*/
static inline void activate_mm(struct mm_struct *prev, struct mm_struct *next)
{
switch_mm(prev, next, current);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 22 | 84.62% | 1 | 50.00% |
| Anton Blanchard | 4 | 15.38% | 1 | 50.00% |
| Total | 26 | 100.00% | 2 | 100.00% |
/* We don't currently use enter_lazy_tlb() for anything */
static inline void enter_lazy_tlb(struct mm_struct *mm,
struct task_struct *tsk)
{
/* 64-bit Book3E keeps track of current PGD in the PACA */
#ifdef CONFIG_PPC_BOOK3E_64
get_paca()->pgd = NULL;
#endif
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Benjamin Herrenschmidt | 30 | 100.00% | 2 | 100.00% |
| Total | 30 | 100.00% | 2 | 100.00% |
static inline void arch_dup_mmap(struct mm_struct *oldmm,
struct mm_struct *mm)
{
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Laurent Dufour | 16 | 100.00% | 1 | 100.00% |
| Total | 16 | 100.00% | 1 | 100.00% |
static inline void arch_exit_mmap(struct mm_struct *mm)
{
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Laurent Dufour | 11 | 100.00% | 1 | 100.00% |
| Total | 11 | 100.00% | 1 | 100.00% |
static inline void arch_unmap(struct mm_struct *mm,
struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
if (start <= mm->context.vdso_base && mm->context.vdso_base < end)
mm->context.vdso_base = 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Laurent Dufour | 51 | 100.00% | 1 | 100.00% |
| Total | 51 | 100.00% | 1 | 100.00% |
static inline void arch_bprm_mm_init(struct mm_struct *mm,
struct vm_area_struct *vma)
{
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Laurent Dufour | 16 | 100.00% | 1 | 100.00% |
| Total | 16 | 100.00% | 1 | 100.00% |
static inline bool arch_vma_access_permitted(struct vm_area_struct *vma,
bool write, bool execute, bool foreign)
{
/* by default, allow everything */
return true;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dave Hansen | 25 | 100.00% | 3 | 100.00% |
| Total | 25 | 100.00% | 3 | 100.00% |
#endif /* __KERNEL__ */
#endif /* __ASM_POWERPC_MMU_CONTEXT_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Alexey Kardashevskiy | 195 | 25.46% | 4 | 12.12% |
| Benjamin Herrenschmidt | 121 | 15.80% | 5 | 15.15% |
| Laurent Dufour | 94 | 12.27% | 1 | 3.03% |
| Aneesh Kumar K.V | 86 | 11.23% | 3 | 9.09% |
| Anton Blanchard | 56 | 7.31% | 3 | 9.09% |
| David Gibson | 50 | 6.53% | 1 | 3.03% |
| Tseng-Hui (Frank) Lin | 38 | 4.96% | 1 | 3.03% |
| Andrew Morton | 34 | 4.44% | 2 | 6.06% |
| Alexander Graf | 31 | 4.05% | 2 | 6.06% |
| Dave Hansen | 25 | 3.26% | 3 | 9.09% |
| Balbir Singh | 11 | 1.44% | 1 | 3.03% |
| Linus Torvalds | 9 | 1.17% | 1 | 3.03% |
| Paul Mackerras | 6 | 0.78% | 2 | 6.06% |
| Arnd Bergmann | 6 | 0.78% | 1 | 3.03% |
| Alexey Dobriyan | 2 | 0.26% | 1 | 3.03% |
| Michael Ellerman | 1 | 0.13% | 1 | 3.03% |
| Greg Kroah-Hartman | 1 | 0.13% | 1 | 3.03% |
| Total | 766 | 100.00% | 33 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.