diff options
Diffstat (limited to 'sys/i386/xen/pmap.c')
| -rw-r--r-- | sys/i386/xen/pmap.c | 53 |
1 files changed, 2 insertions, 51 deletions
diff --git a/sys/i386/xen/pmap.c b/sys/i386/xen/pmap.c index c81834b..5468520 100644 --- a/sys/i386/xen/pmap.c +++ b/sys/i386/xen/pmap.c @@ -184,9 +184,6 @@ __FBSDID("$FreeBSD$"); #define PV_STAT(x) do { } while (0) #endif -#define pa_index(pa) ((pa) >> PDRSHIFT) -#define pa_to_pvh(pa) (&pv_table[pa_index(pa)]) - /* * Get PDEs and PTEs for user/kernel address space */ @@ -230,7 +227,6 @@ static int pat_works; /* Is page attribute table sane? */ * Data for the pv entry allocation mechanism */ static int pv_entry_count = 0, pv_entry_max = 0, pv_entry_high_water = 0; -static struct md_page *pv_table; static int shpgperproc = PMAP_SHPGPERPROC; struct pv_chunk *pv_chunkbase; /* KVA block for pv_chunks */ @@ -278,9 +274,6 @@ SYSCTL_INT(_debug, OID_AUTO, PMAP1unchanged, CTLFLAG_RD, static struct mtx PMAP2mutex; static SYSCTL_NODE(_vm, OID_AUTO, pmap, CTLFLAG_RD, 0, "VM/pmap parameters"); -static int pg_ps_enabled; -SYSCTL_INT(_vm_pmap, OID_AUTO, pg_ps_enabled, CTLFLAG_RDTUN, &pg_ps_enabled, 0, - "Are large page mappings enabled?"); SYSCTL_INT(_vm_pmap, OID_AUTO, pv_entry_max, CTLFLAG_RD, &pv_entry_max, 0, "Max number of PV entries"); @@ -636,24 +629,8 @@ pmap_ptelist_init(vm_offset_t *head, void *base, int npages) void pmap_init(void) { - vm_page_t mpte; - vm_size_t s; - int i, pv_npg; /* - * Initialize the vm page array entries for the kernel pmap's - * page table pages. - */ - for (i = 0; i < nkpt; i++) { - mpte = PHYS_TO_VM_PAGE(xpmap_mtop(PTD[i + KPTDI] & PG_FRAME)); - KASSERT(mpte >= vm_page_array && - mpte < &vm_page_array[vm_page_array_size], - ("pmap_init: page table page is out of range")); - mpte->pindex = i + KPTDI; - mpte->phys_addr = xpmap_mtop(PTD[i + KPTDI] & PG_FRAME); - } - - /* * Initialize the address space (zone) for the pv entries. Set a * high water mark so that the system can recover from excessive * numbers of pv entries. @@ -664,26 +641,6 @@ pmap_init(void) pv_entry_max = roundup(pv_entry_max, _NPCPV); pv_entry_high_water = 9 * (pv_entry_max / 10); - /* - * Are large page mappings enabled? - */ - TUNABLE_INT_FETCH("vm.pmap.pg_ps_enabled", &pg_ps_enabled); - - /* - * Calculate the size of the pv head table for superpages. - */ - for (i = 0; phys_avail[i + 1]; i += 2); - pv_npg = round_4mpage(phys_avail[(i - 2) + 1]) / NBPDR; - - /* - * Allocate memory for the pv head table for superpages. - */ - s = (vm_size_t)(pv_npg * sizeof(struct md_page)); - s = round_page(s); - pv_table = (struct md_page *)kmem_alloc(kernel_map, s); - for (i = 0; i < pv_npg; i++) - TAILQ_INIT(&pv_table[i].pv_list); - pv_maxchunks = MAX(pv_entry_max / _NPCPV, maxproc); pv_chunkbase = (struct pv_chunk *)kmem_alloc_nofault(kernel_map, PAGE_SIZE * pv_maxchunks); @@ -3448,21 +3405,15 @@ pmap_page_wired_mappings(vm_page_t m) } /* - * Returns TRUE if the given page is mapped individually or as part of - * a 4mpage. Otherwise, returns FALSE. + * Returns TRUE if the given page is mapped. Otherwise, returns FALSE. */ boolean_t pmap_page_is_mapped(vm_page_t m) { - boolean_t rv; if ((m->oflags & VPO_UNMANAGED) != 0) return (FALSE); - vm_page_lock_queues(); - rv = !TAILQ_EMPTY(&m->md.pv_list) || - !TAILQ_EMPTY(&pa_to_pvh(VM_PAGE_TO_PHYS(m))->pv_list); - vm_page_unlock_queues(); - return (rv); + return (!TAILQ_EMPTY(&m->md.pv_list)); } /* |
