/* Minimum allocated guest virtual and physical addresses */
#define KVM_UTIL_MIN_VADDR 0x2000
+#define KVM_GUEST_PAGE_TABLE_MIN_PADDR 0x180000
#define DEFAULT_GUEST_PHY_PAGES 512
#define DEFAULT_GUEST_STACK_VADDR_MIN 0xab6000
uint32_t memslot);
vm_paddr_t vm_phy_pages_alloc(struct kvm_vm *vm, size_t num,
vm_paddr_t paddr_min, uint32_t memslot);
+vm_paddr_t vm_alloc_page_table(struct kvm_vm *vm);
/*
* Create a VM with reasonable defaults
#include "../kvm_util_internal.h"
#include "processor.h"
-#define KVM_GUEST_PAGE_TABLE_MIN_PADDR 0x180000
#define DEFAULT_ARM64_GUEST_STACK_VADDR_MIN 0xac0000
static uint64_t page_align(struct kvm_vm *vm, uint64_t v)
paddr, vm->max_gfn, vm->page_size);
ptep = addr_gpa2hva(vm, vm->pgd) + pgd_index(vm, vaddr) * 8;
- if (!*ptep) {
- *ptep = vm_phy_page_alloc(vm, KVM_GUEST_PAGE_TABLE_MIN_PADDR, 0);
- *ptep |= 3;
- }
+ if (!*ptep)
+ *ptep = vm_alloc_page_table(vm) | 3;
switch (vm->pgtable_levels) {
case 4:
ptep = addr_gpa2hva(vm, pte_addr(vm, *ptep)) + pud_index(vm, vaddr) * 8;
- if (!*ptep) {
- *ptep = vm_phy_page_alloc(vm, KVM_GUEST_PAGE_TABLE_MIN_PADDR, 0);
- *ptep |= 3;
- }
+ if (!*ptep)
+ *ptep = vm_alloc_page_table(vm) | 3;
/* fall through */
case 3:
ptep = addr_gpa2hva(vm, pte_addr(vm, *ptep)) + pmd_index(vm, vaddr) * 8;
- if (!*ptep) {
- *ptep = vm_phy_page_alloc(vm, KVM_GUEST_PAGE_TABLE_MIN_PADDR, 0);
- *ptep |= 3;
- }
+ if (!*ptep)
+ *ptep = vm_alloc_page_table(vm) | 3;
/* fall through */
case 2:
ptep = addr_gpa2hva(vm, pte_addr(vm, *ptep)) + pte_index(vm, vaddr) * 8;
return vm_phy_pages_alloc(vm, 1, paddr_min, memslot);
}
+/* Arbitrary minimum physical address used for virtual translation tables. */
+#define KVM_GUEST_PAGE_TABLE_MIN_PADDR 0x180000
+
+vm_paddr_t vm_alloc_page_table(struct kvm_vm *vm)
+{
+ return vm_phy_page_alloc(vm, KVM_GUEST_PAGE_TABLE_MIN_PADDR, 0);
+}
+
/*
* Address Guest Virtual to Host Virtual
*
#include "kvm_util.h"
#include "../kvm_util_internal.h"
-#define KVM_GUEST_PAGE_TABLE_MIN_PADDR 0x180000
-
#define PAGES_PER_REGION 4
void virt_pgd_alloc(struct kvm_vm *vm)
#define DEFAULT_CODE_SELECTOR 0x8
#define DEFAULT_DATA_SELECTOR 0x10
-/* Minimum physical address used for virtual translation tables. */
-#define KVM_GUEST_PAGE_TABLE_MIN_PADDR 0x180000
-
vm_vaddr_t exception_handlers;
/* Virtual translation table structure declarations */
/* If needed, create page map l4 table. */
if (!vm->pgd_created) {
- vm_paddr_t paddr = vm_phy_page_alloc(vm,
- KVM_GUEST_PAGE_TABLE_MIN_PADDR, 0);
- vm->pgd = paddr;
+ vm->pgd = vm_alloc_page_table(vm);
vm->pgd_created = true;
}
}
/* Allocate page directory pointer table if not present. */
pml4e = addr_gpa2hva(vm, vm->pgd);
if (!pml4e[index[3]].present) {
- pml4e[index[3]].address = vm_phy_page_alloc(vm,
- KVM_GUEST_PAGE_TABLE_MIN_PADDR, 0)
- >> vm->page_shift;
+ pml4e[index[3]].address = vm_alloc_page_table(vm) >> vm->page_shift;
pml4e[index[3]].writable = true;
pml4e[index[3]].present = true;
}
struct pageDirectoryPointerEntry *pdpe;
pdpe = addr_gpa2hva(vm, pml4e[index[3]].address * vm->page_size);
if (!pdpe[index[2]].present) {
- pdpe[index[2]].address = vm_phy_page_alloc(vm,
- KVM_GUEST_PAGE_TABLE_MIN_PADDR, 0)
- >> vm->page_shift;
+ pdpe[index[2]].address = vm_alloc_page_table(vm) >> vm->page_shift;
pdpe[index[2]].writable = true;
pdpe[index[2]].present = true;
}
struct pageDirectoryEntry *pde;
pde = addr_gpa2hva(vm, pdpe[index[2]].address * vm->page_size);
if (!pde[index[1]].present) {
- pde[index[1]].address = vm_phy_page_alloc(vm,
- KVM_GUEST_PAGE_TABLE_MIN_PADDR, 0)
- >> vm->page_shift;
+ pde[index[1]].address = vm_alloc_page_table(vm) >> vm->page_shift;
pde[index[1]].writable = true;
pde[index[1]].present = true;
}
/* Allocate page directory pointer table if not present. */
pml4e = vmx->eptp_hva;
if (!pml4e[index[3]].readable) {
- pml4e[index[3]].address = vm_phy_page_alloc(vm,
- KVM_EPT_PAGE_TABLE_MIN_PADDR, 0)
- >> vm->page_shift;
+ pml4e[index[3]].address = vm_alloc_page_table(vm) >> vm->page_shift;
pml4e[index[3]].writable = true;
pml4e[index[3]].readable = true;
pml4e[index[3]].executable = true;
struct eptPageTableEntry *pdpe;
pdpe = addr_gpa2hva(vm, pml4e[index[3]].address * vm->page_size);
if (!pdpe[index[2]].readable) {
- pdpe[index[2]].address = vm_phy_page_alloc(vm,
- KVM_EPT_PAGE_TABLE_MIN_PADDR, 0)
- >> vm->page_shift;
+ pdpe[index[2]].address = vm_alloc_page_table(vm) >> vm->page_shift;
pdpe[index[2]].writable = true;
pdpe[index[2]].readable = true;
pdpe[index[2]].executable = true;
struct eptPageTableEntry *pde;
pde = addr_gpa2hva(vm, pdpe[index[2]].address * vm->page_size);
if (!pde[index[1]].readable) {
- pde[index[1]].address = vm_phy_page_alloc(vm,
- KVM_EPT_PAGE_TABLE_MIN_PADDR, 0)
- >> vm->page_shift;
+ pde[index[1]].address = vm_alloc_page_table(vm) >> vm->page_shift;
pde[index[1]].writable = true;
pde[index[1]].readable = true;
pde[index[1]].executable = true;