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sandbox: vm: organise pages into zoned blocks

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max 🍓
2023-01-28 19:24:28 +00:00
parent 0227cb822b
commit d0341a5e35
6 changed files with 188 additions and 39 deletions
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28
sandbox/vm/vm_bootstrap.c
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@@ -4,41 +4,23 @@
#include <socks/memblock.h>
#include <stddef.h>
#include <limits.h>
#include <stdint.h>
#include <stdio.h>
/* One vm_pg_data_t per NUMA node. */
static vm_pg_data_t *node_data = NULL;
/* array of pages, one for each physical page frame present in RAM */
static vm_page_t *page_array = NULL;
kern_status_t vm_bootstrap()
kern_status_t vm_bootstrap(const vm_zone_descriptor_t *zones, size_t nr_zones)
{
int numa_count = 1;
/* we're only worrying about UMA systems for now */
node_data = memblock_alloc(sizeof(vm_pg_data_t) * numa_count);
size_t pmem_size = 0;
vm_page_init_array();
memblock_iter_t it;
for_each_mem_range (&it, 0x0, UINTPTR_MAX) {
if (pmem_size < it.it_limit + 1) {
pmem_size = it.it_limit + 1;
}
}
size_t nr_pages = pmem_size / VM_PAGE_SIZE;
if (pmem_size % VM_PAGE_SIZE) {
nr_pages++;
}
page_array = memblock_alloc(sizeof(vm_page_t) * nr_pages);
printf("page_array covers 0x%zx bytes, %zu page frames\n", pmem_size, pmem_size / 0x1000);
printf("page_array is %zu bytes long\n", sizeof(vm_page_t) * nr_pages);
for (size_t i = 0; i < nr_pages; i++) {
vm_page_init(&page_array[i]);
for (size_t i = 0; i < nr_zones; i++) {
vm_zone_init(&node_data->pg_zones[zones[i].zd_id], zones[i].zd_name, zones[i].zd_base, zones[i].zd_limit);
}
return KERN_OK;