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Index: sys/vm/vm_phys.h
===================================================================
--- sys/vm/vm_phys.h
+++ sys/vm/vm_phys.h
@@ -69,6 +69,7 @@
vm_paddr_t start;
vm_paddr_t end;
vm_page_t first_page;
+ vm_reserv_t first_reserv;
int domain;
struct vm_freelist (*free_queues)[VM_NFREEPOOL][VM_NFREEORDER_MAX];
};
Index: sys/vm/vm_reserv.c
===================================================================
--- sys/vm/vm_reserv.c
+++ sys/vm/vm_reserv.c
@@ -233,6 +233,21 @@
*/
static vm_reserv_t vm_reserv_array;
+static vm_reserv_t
+phys_to_reserv(vm_paddr_t pa) {
+ struct vm_phys_seg *seg;
+ int segind;
+
+ for (segind = 0; segind < vm_phys_nsegs; segind++) {
+ seg = &vm_phys_segs[segind];
+ if (pa >= seg->start && pa < seg->end)
+ return (seg->first_reserv +
+ (pa >> VM_LEVEL_0_SHIFT) -
+ (seg->start >> VM_LEVEL_0_SHIFT));
+ }
+ panic("pa 0x%jx not within vm_phys_segs", (uintmax_t)pa);
+}
+
/*
* The per-domain partially populated reservation queues
*
@@ -333,11 +348,13 @@
for (segind = 0; segind < vm_phys_nsegs; segind++) {
seg = &vm_phys_segs[segind];
paddr = roundup2(seg->start, VM_LEVEL_0_SIZE);
+ rv = seg->first_reserv + (paddr >> VM_LEVEL_0_SHIFT) -
+ (seg->start >> VM_LEVEL_0_SHIFT);
while (paddr + VM_LEVEL_0_SIZE > paddr && paddr +
VM_LEVEL_0_SIZE <= seg->end) {
- rv = &vm_reserv_array[paddr >> VM_LEVEL_0_SHIFT];
fullpop += rv->popcnt == VM_LEVEL_0_NPAGES;
paddr += VM_LEVEL_0_SIZE;
+ rv++;
}
}
return (sysctl_handle_int(oidp, &fullpop, 0, req));
@@ -496,8 +513,11 @@
static __inline vm_reserv_t
vm_reserv_from_page(vm_page_t m)
{
+ struct vm_phys_seg *seg;
- return (&vm_reserv_array[VM_PAGE_TO_PHYS(m) >> VM_LEVEL_0_SHIFT]);
+ seg = &vm_phys_segs[m->segind];
+ return (seg->first_reserv + (m->phys_addr >> VM_LEVEL_0_SHIFT) -
+ (seg->start >> VM_LEVEL_0_SHIFT));
}
/*
@@ -1052,7 +1072,7 @@
{
vm_paddr_t paddr;
struct vm_phys_seg *seg;
- struct vm_reserv *rv;
+ struct vm_reserv *rv, *first;
struct vm_reserv_domain *rvd;
int i, j, segind;
@@ -1060,17 +1080,23 @@
* Initialize the reservation array. Specifically, initialize the
* "pages" field for every element that has an underlying superpage.
*/
+ first = vm_reserv_array;
for (segind = 0; segind < vm_phys_nsegs; segind++) {
seg = &vm_phys_segs[segind];
+ seg->first_reserv = first;
paddr = roundup2(seg->start, VM_LEVEL_0_SIZE);
+ rv = first + (paddr >> VM_LEVEL_0_SHIFT) -
+ (seg->start >> VM_LEVEL_0_SHIFT);
while (paddr + VM_LEVEL_0_SIZE > paddr && paddr +
VM_LEVEL_0_SIZE <= seg->end) {
- rv = &vm_reserv_array[paddr >> VM_LEVEL_0_SHIFT];
rv->pages = PHYS_TO_VM_PAGE(paddr);
rv->domain = seg->domain;
mtx_init(&rv->lock, "vm reserv", NULL, MTX_DEF);
paddr += VM_LEVEL_0_SIZE;
+ rv++;
}
+ first += howmany(seg->end, VM_LEVEL_0_SIZE) -
+ seg->start / VM_LEVEL_0_SIZE;
}
for (i = 0; i < MAXMEMDOM; i++) {
rvd = &vm_rvd[i];
@@ -1400,30 +1426,29 @@
vm_paddr_t
vm_reserv_startup(vm_offset_t *vaddr, vm_paddr_t end)
{
- vm_paddr_t new_end, high_water;
+ vm_paddr_t new_end;
size_t size;
- int i;
+ int count, i;
- high_water = phys_avail[1];
+ count = 0;
for (i = 0; i < vm_phys_nsegs; i++) {
- if (vm_phys_segs[i].end > high_water)
- high_water = vm_phys_segs[i].end;
+ count += howmany(vm_phys_segs[i].end, VM_LEVEL_0_SIZE) -
+ vm_phys_segs[i].start / VM_LEVEL_0_SIZE;
}
- /* Skip the first chunk. It is already accounted for. */
- for (i = 2; phys_avail[i + 1] != 0; i += 2) {
- if (phys_avail[i + 1] > high_water)
- high_water = phys_avail[i + 1];
+ for (i = 0; phys_avail[i + 1] != 0; i += 2) {
+ count += howmany(phys_avail[i + 1], VM_LEVEL_0_SIZE) -
+ phys_avail[i] / VM_LEVEL_0_SIZE;
}
/*
- * Calculate the size (in bytes) of the reservation array. Round up
- * from "high_water" because every small page is mapped to an element
- * in the reservation array based on its physical address. Thus, the
- * number of elements in the reservation array can be greater than the
- * number of superpages.
+ * Calculate the size (in bytes) of the reservation array. Rounding up
+ * for partial superpages at boundaries, as every small page is mapped
+ * to an element in the reservation array based on its physical address.
+ * Thus, the number of elements in the reservation array can be greater
+ * than the number of superpages.
*/
- size = howmany(high_water, VM_LEVEL_0_SIZE) * sizeof(struct vm_reserv);
+ size = count * sizeof(struct vm_reserv);
/*
* Allocate and map the physical memory for the reservation array. The

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