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Define UMA_MD_SMALL_ALLOC so that we can allocate memory with region

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7 addresses for use by page tables and kernel stacks.

Obtained from: peter
This commit is contained in:
Marcel Moolenaar 2002-11-06 04:47:38 +00:00
parent aeeb228712
commit 6e296c0d4e
2 changed files with 38 additions and 16 deletions
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49
sys/ia64/ia64/pmap.c
View File

@ -117,6 +117,7 @@
#include <vm/vm_pageout.h>
#include <vm/vm_pager.h>
#include <vm/uma.h>
#include <vm/uma_int.h>
#include <sys/user.h>
@ -226,9 +227,6 @@ struct mtx pmap_ridmutex;
* Data for the pv entry allocation mechanism
*/
static uma_zone_t pvzone;
#if 0
static struct vm_object pvzone_obj;
#endif
static int pv_entry_count = 0, pv_entry_max = 0, pv_entry_high_water = 0;
static int pmap_pagedaemon_waken = 0;
static struct pv_entry *pvbootentries;
@ -238,9 +236,6 @@ static int pvbootnext, pvbootmax;
* Data for allocating PTEs for user processes.
*/
static uma_zone_t ptezone;
#if 0
static struct vm_object ptezone_obj;
#endif
/*
* VHPT instrumentation.
@ -264,7 +259,6 @@ static void ia64_protection_init(void);
static void pmap_invalidate_all(pmap_t pmap);
static void pmap_remove_all(vm_page_t m);
static void pmap_enter_quick(pmap_t pmap, vm_offset_t va, vm_page_t m);
static void *pmap_allocf(uma_zone_t zone, int bytes, u_int8_t *flags, int wait);
vm_offset_t
pmap_steal_memory(vm_size_t size)
@ -484,11 +478,40 @@ pmap_bootstrap()
pmap_invalidate_all(kernel_pmap);
}
static void *
pmap_allocf(uma_zone_t zone, int bytes, u_int8_t *flags, int wait)
void *
uma_small_alloc(uma_zone_t zone, int bytes, u_int8_t *flags, int wait)
{
static vm_pindex_t color;
vm_page_t m;
int pflags;
void *va;
*flags = UMA_SLAB_PRIV;
return (void *)IA64_PHYS_TO_RR7(ia64_tpa(kmem_alloc(kernel_map, bytes)));
if ((wait & (M_NOWAIT|M_USE_RESERVE)) == M_NOWAIT)
pflags = VM_ALLOC_INTERRUPT;
else
pflags = VM_ALLOC_SYSTEM;
if (wait & M_ZERO)
pflags |= VM_ALLOC_ZERO;
m = vm_page_alloc(NULL, color++, pflags | VM_ALLOC_NOOBJ);
if (m) {
va = (void *)IA64_PHYS_TO_RR7(VM_PAGE_TO_PHYS(m));
if ((m->flags & PG_ZERO) == 0)
bzero(va, PAGE_SIZE);
return (va);
}
return (NULL);
}
void
uma_small_free(void *mem, int size, u_int8_t flags)
{
vm_page_t m;
m = PHYS_TO_VM_PAGE(IA64_RR_MASK((u_int64_t)mem));
vm_page_lock_queues();
vm_page_free(m);
vm_page_unlock_queues();
}
/*
@ -527,12 +550,10 @@ pmap_init(vm_offset_t phys_start, vm_offset_t phys_end)
initial_pvs = MAXPV;
pvzone = uma_zcreate("PV ENTRY", sizeof (struct pv_entry),
NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_VM);
uma_zone_set_allocf(pvzone, pmap_allocf);
uma_prealloc(pvzone, initial_pvs);
ptezone = uma_zcreate("PT ENTRY", sizeof (struct ia64_lpte),
NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_VM);
uma_zone_set_allocf(ptezone, pmap_allocf);
uma_prealloc(ptezone, initial_pvs);
/*
@ -559,10 +580,6 @@ pmap_init2()
TUNABLE_INT_FETCH("vm.pmap.shpgperproc", &shpgperproc);
pv_entry_max = shpgperproc * maxproc + vm_page_array_size;
pv_entry_high_water = 9 * (pv_entry_max / 10);
#if 0 /* incompatable with pmap_allocf above */
uma_zone_set_obj(pvzone, &pvzone_obj, pv_entry_max);
uma_zone_set_obj(ptezone, &ptezone_obj, pv_entry_max);
#endif
}

5
sys/ia64/include/vmparam.h
View File

@ -120,6 +120,11 @@
#define SAFERSS 10 /* nominal ``small'' resident set size
protected against replacement */
/*
* We need region 7 virtual addresses for pagetables.
*/
#define UMA_MD_SMALL_ALLOC
/*
* Manipulating region bits of an address.
*/