blob: 3433dda8c7a07d77fa83f6c862df22f0e489feef [file] [log] [blame] [edit]
/* test long rmap chains */
#include "libcflat.h"
#include "fwcfg.h"
#include "vm.h"
#include "vmalloc.h"
#include "smp.h"
#include "alloc_page.h"
int main (void)
{
int i;
int nr_pages;
void *target_page, *virt_addr;
setup_vm();
nr_pages = fwcfg_get_u64(FW_CFG_RAM_SIZE) / PAGE_SIZE;
nr_pages -= 1000;
target_page = alloc_page();
virt_addr = (void *) 0xfffffa000;
for (i = 0; i < nr_pages; i++) {
install_page(phys_to_virt(read_cr3()), virt_to_phys(target_page),
virt_addr);
virt_addr += PAGE_SIZE;
}
printf("created %d mappings\n", nr_pages);
virt_addr = (void *) 0xfffffa000;
for (i = 0; i < nr_pages; i++) {
unsigned long *touch = virt_addr;
*touch = 0;
virt_addr += PAGE_SIZE;
}
printf("instantiated mappings\n");
virt_addr += PAGE_SIZE;
install_pte(phys_to_virt(read_cr3()), 1, virt_addr,
0 | PT_PRESENT_MASK | PT_WRITABLE_MASK, target_page);
*(unsigned long *)virt_addr = 0;
printf("PASS\n");
return 0;
}