diff options
Diffstat (limited to 'sys/ia64/include/pmap.h')
| -rw-r--r-- | sys/ia64/include/pmap.h | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/sys/ia64/include/pmap.h b/sys/ia64/include/pmap.h index 3c4539f..fca4c78 100644 --- a/sys/ia64/include/pmap.h +++ b/sys/ia64/include/pmap.h @@ -64,16 +64,16 @@ * Pmap stuff */ struct pv_entry; +struct pv_chunk; struct md_page { - int pv_list_count; TAILQ_HEAD(,pv_entry) pv_list; vm_memattr_t memattr; }; struct pmap { struct mtx pm_mtx; - TAILQ_HEAD(,pv_entry) pm_pvlist; /* list of mappings in pmap */ + TAILQ_HEAD(,pv_chunk) pm_pvchunk; /* list of mappings in pmap */ uint32_t pm_rid[IA64_VM_MINKERN_REGION]; struct pmap_statistics pm_stats; /* pmap statistics */ }; @@ -101,12 +101,25 @@ extern struct pmap kernel_pmap_store; * mappings of that page. An entry is a pv_entry_t, the list is pv_list. */ typedef struct pv_entry { - pmap_t pv_pmap; /* pmap where mapping lies */ vm_offset_t pv_va; /* virtual address for mapping */ TAILQ_ENTRY(pv_entry) pv_list; - TAILQ_ENTRY(pv_entry) pv_plist; } *pv_entry_t; +/* + * pv_entries are allocated in chunks per-process. This avoids the + * need to track per-pmap assignments. + */ +#define _NPCM 6 +#define _NPCPV 337 +struct pv_chunk { + pmap_t pc_pmap; + TAILQ_ENTRY(pv_chunk) pc_list; + u_long pc_map[_NPCM]; /* bitmap; 1 = free */ + TAILQ_ENTRY(pv_chunk) pc_lru; + u_long pc_spare[2]; + struct pv_entry pc_pventry[_NPCPV]; +}; + #ifdef _KERNEL extern vm_paddr_t phys_avail[]; |
