Release 4.14 arch/powerpc/include/asm/pgtable.h
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_POWERPC_PGTABLE_H
#define _ASM_POWERPC_PGTABLE_H
#ifndef __ASSEMBLY__
#include <linux/mmdebug.h>
#include <linux/mmzone.h>
#include <asm/processor.h> /* For TASK_SIZE */
#include <asm/mmu.h>
#include <asm/page.h>
struct mm_struct;
#endif /* !__ASSEMBLY__ */
#ifdef CONFIG_PPC_BOOK3S
#include <asm/book3s/pgtable.h>
#else
#include <asm/nohash/pgtable.h>
#endif /* !CONFIG_PPC_BOOK3S */
#ifndef __ASSEMBLY__
#include <asm/tlbflush.h>
/* Keep these as a macros to avoid include dependency mess */
#define pte_page(x) pfn_to_page(pte_pfn(x))
#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))
/*
* ZERO_PAGE is a global shared page that is always zero: used
* for zero-mapped memory areas etc..
*/
extern unsigned long empty_zero_page[];
#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
extern pgd_t swapper_pg_dir[];
void limit_zone_pfn(enum zone_type zone, unsigned long max_pfn);
int dma_pfn_limit_to_zone(u64 pfn_limit);
extern void paging_init(void);
/*
* kern_addr_valid is intended to indicate whether an address is a valid
* kernel address. Most 32-bit archs define it as always true (like this)
* but most 64-bit archs actually perform a test. What should we do here?
*/
#define kern_addr_valid(addr) (1)
#include <asm-generic/pgtable.h>
/*
* This gets called at the end of handling a page fault, when
* the kernel has put a new PTE into the page table for the process.
* We use it to ensure coherency between the i-cache and d-cache
* for the page which has just been mapped in.
* On machines which use an MMU hash table, we use this to put a
* corresponding HPTE into the hash table ahead of time, instead of
* waiting for the inevitable extra hash-table miss exception.
*/
extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t *);
extern int gup_hugepte(pte_t *ptep, unsigned long sz, unsigned long addr,
unsigned long end, int write,
struct page **pages, int *nr);
#ifndef CONFIG_TRANSPARENT_HUGEPAGE
#define pmd_large(pmd) 0
#endif
/* can we use this in kvm */
unsigned long vmalloc_to_phys(void *vmalloc_addr);
void pgtable_cache_add(unsigned shift, void (*ctor)(void *));
void pgtable_cache_init(void);
#if defined(CONFIG_STRICT_KERNEL_RWX) || defined(CONFIG_PPC32)
void mark_initmem_nx(void);
#else
static inline void mark_initmem_nx(void) { }
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Michael Ellerman | 8 | 100.00% | 1 | 100.00% |
| Total | 8 | 100.00% | 1 | 100.00% |
#endif
#endif /* __ASSEMBLY__ */
#endif /* _ASM_POWERPC_PGTABLE_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Aneesh Kumar K.V | 80 | 31.37% | 6 | 24.00% |
| David Gibson | 47 | 18.43% | 3 | 12.00% |
| Christophe Leroy | 33 | 12.94% | 2 | 8.00% |
| Scott Wood | 24 | 9.41% | 2 | 8.00% |
| Benjamin Herrenschmidt | 23 | 9.02% | 4 | 16.00% |
| Michael Ellerman | 19 | 7.45% | 1 | 4.00% |
| Anton Blanchard | 11 | 4.31% | 2 | 8.00% |
| Alexey Kardashevskiy | 9 | 3.53% | 1 | 4.00% |
| Geoff Thorpe | 4 | 1.57% | 1 | 4.00% |
| Paul Mackerras | 3 | 1.18% | 1 | 4.00% |
| Greg Kroah-Hartman | 1 | 0.39% | 1 | 4.00% |
| Russell King | 1 | 0.39% | 1 | 4.00% |
| Total | 255 | 100.00% | 25 | 100.00% |
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