uintptr_t *ept_pte(struct ept *ept, uintptr_t *pml, uintptr_t phys)
{
uintptr_t *pxe = page_addr(&pml[__pxe_idx(phys)]);
uintptr_t *ppe = page_addr(&pxe[__ppe_idx(phys)]);
uintptr_t *pde = page_addr(&ppe[__pde_idx(phys)]);
return &pde[__pte_idx(phys)];
}
uintptr_t *ept_alloc_page(struct ept *ept, uintptr_t *pml4, uint8_t access, uintptr_t phys)
{
/* PML4 (512 GB) */
uintptr_t *pml4e = &pml4[__pxe_idx(phys)];
uintptr_t *pdpt = page_addr(pml4e);
if (!*pml4e) {
pdpt = ept_alloc_entry(ept);
if (!pdpt)
return NULL;
ept_init_entry(pml4e, EPT_ACCESS_ALL, __pa(pdpt));
}
/* PDPT (1 GB) */
uintptr_t *pdpte = &pdpt[__ppe_idx(phys)];
uintptr_t *pdt = page_addr(pdpte);
if (!*pdpte) {
pdt = ept_alloc_entry(ept);
if (!pdt)
return NULL;
ept_init_entry(pdpte, EPT_ACCESS_ALL, __pa(pdt));
}
/* PDT (2 MB) */
uintptr_t *pdte = &pdt[__pde_idx(phys)];
uintptr_t *pt = page_addr(pdte);
if (!*pdte) {
pt = ept_alloc_entry(ept);
if (!pt)
return NULL;
ept_init_entry(pdte, EPT_ACCESS_ALL, __pa(pt));
}
/* PT (4 KB) */
uintptr_t *page = &pt[__pte_idx(phys)];
ept_init_entry(page, access, phys);
*page |= EPT_MT_WRITEBACK << VMX_EPT_MT_EPTE_SHIFT;
#ifdef EPT_SUPPRESS_VE
*page |= EPT_SUPPRESS_VE_BIT;
#endif
return page;
}
//---------------------------------------------------------------------------
IMPLEMENTATION[!ppc32]:
PUBLIC
Address
Pdir::virt_to_phys(Address virt) const
{
Virt_addr va(virt);
auto i = walk(va);
if (!i.is_valid())
return Invalid_address;
return i.page_addr() | cxx::get_lsb(virt, i.page_order());
}
PUBLIC
bool
Vm_vmx_ept::v_lookup(Mem_space::Vaddr virt, Mem_space::Phys_addr *phys,
Mem_space::Page_order *order, Mem_space::Attr *page_attribs)
{
auto i = _ept->walk(virt);
if (order) *order = Mem_space::Page_order(i.page_order());
if (!i.is_valid())
return false;
// FIXME: we may get a problem on 32 bit systems and using more than 4G ram
if (phys) *phys = Mem_space::Phys_addr(i.page_addr());
if (page_attribs) *page_attribs = i.attribs();
return true;
}
static void handle_bio(struct bio *bio)
{
if (bio->map.length % IDE_SECTOR_SIZE) {
finish_bio(bio, BIO_FAILED);
return;
}
char *page = page_addr(bio->map.page);
const unsigned long long lba = bio->map.sector;
const size_t count = bio->map.length / IDE_SECTOR_SIZE;
void *data = page + bio->map.offset;
const int rc = bio->dir == BIO_READ
? read_sectors(data, lba, count)
: write_sectors(data, lba, count);
finish_bio(bio, rc == 0 ? BIO_FINISHED : BIO_FAILED);
}
/*
** resolve pte (allocate pt if needed for non-large pde
** return 0 if large page
*/
static inline
npg_pte64_t* __npg_resolve_pte(npg_pde64_t *pde, offset_t addr, uint64_t attr)
{
npg_pte64_t *pt;
if(!npg_present(pde))
{
pt = __npg_new_pt();
/* upper-level entry has full pvl */
npg_set_entry(pde, attr|npg_dft_pvl, page_nr(pt));
}
else if(npg_large(pde))
return 0;
else
pt = (npg_pte64_t*)page_addr(pde->addr);
return &pt[pt64_idx(addr)];
}
/*
** resolve pde (allocate pd if needed) for non-large pdpe
** return 0 if large page
*/
static inline
npg_pde64_t* __npg_resolve_pde(npg_pdpe_t *pdpe, offset_t addr, uint64_t attr)
{
npg_pde64_t *pd;
if(!npg_present(pdpe))
{
pd = __npg_new_pd();
/* upper-level entry has full pvl */
npg_set_entry(pdpe, attr|npg_dft_pvl, page_nr(pd));
}
else if(npg_large(pdpe))
return 0;
else
pd = (npg_pde64_t*)page_addr(pdpe->addr);
return &pd[pd64_idx(addr)];
}
/*
** resolve pdpe (allocate pdp if needed)
*/
static inline npg_pdpe_t* __npg_resolve_pdpe(offset_t addr, uint64_t attr)
{
vm_pgmem_t *pg = npg_get_active_paging();
npg_pml4e_t *pml4e;
npg_pdpe_t *pdp;
pml4e = &pg->pml4[pml4_idx(addr)];
if(!npg_present(pml4e))
{
pdp = __npg_new_pdp();
/* upper-level entry has full pvl */
npg_set_entry(pml4e, attr|npg_dft_pvl, page_nr(pdp));
}
else
pdp = (npg_pdpe_t*)page_addr(pml4e->addr);
return &pdp[pdp_idx(addr)];
}
PUBLIC
Mem_space::Status
Vm_vmx_ept::v_insert(Mem_space::Phys_addr phys, Mem_space::Vaddr virt,
Mem_space::Page_order size, Mem_space::Attr page_attribs)
{
// insert page into page table
// XXX should modify page table using compare-and-swap
assert (cxx::get_lsb(Mem_space::Phys_addr(phys), size) == 0);
assert (cxx::get_lsb(Virt_addr(virt), size) == 0);
int level;
for (level = 0; level <= Ept::Depth; ++level)
if (Mem_space::Page_order(Ept::page_order_for_level(level)) <= size)
break;
auto i = _ept->walk(virt, level, false,
Kmem_alloc::q_allocator(ram_quota()));
if (EXPECT_FALSE(!i.is_valid() && i.level != level))
return Mem_space::Insert_err_nomem;
if (EXPECT_FALSE(i.is_valid()
&& (i.level != level || Mem_space::Phys_addr(i.page_addr()) != phys)))
return Mem_space::Insert_err_exists;
if (i.is_valid())
{
if (EXPECT_FALSE(!i.add_attribs(page_attribs)))
return Mem_space::Insert_warn_exists;
return Mem_space::Insert_warn_attrib_upgrade;
}
else
{
i.create_page(phys, page_attribs);
return Mem_space::Insert_ok;
}
}
static void __npg_unmap_1G(npg_pdpe_t *pdpe)
{
npg_pde64_t *pd;
uint32_t i;
debug(PG_MAP, "unmap 1G 0x%X\n", pdpe->raw);
if(!npg_large(pdpe))
{
pd = (npg_pde64_t*)page_addr(pdpe->addr);
debug(PG_MAP, "unmap 2M for each pde\n");
for(i=0 ; i<PDE64_PER_PD ; i++)
if(npg_present(&pd[i]))
__npg_unmap_2M(&pd[i]);
debug(PG_MAP, "freeing pd\n");
pool_push_page((offset_t)pd);
}
npg_zero(pdpe);
}
static void __npg_unmap_2M(npg_pde64_t *pde)
{
npg_pte64_t *pt;
uint32_t i;
debug(PG_MAP, "unmap 2M 0x%X\n", pde->raw);
if(!npg_large(pde))
{
pt = (npg_pte64_t*)page_addr(pde->addr);
debug(PG_MAP, "clear each pte\n");
for(i=0 ; i<PTE64_PER_PT ; i++)
if(npg_present(&pt[i]))
npg_zero(&pt[i]);
debug(PG_MAP, "freeing pt\n");
pool_push_page((offset_t)pt);
}
npg_zero(pde);
}
/*
** pmode: 4MB and 4KB pages
** cr4.pse is used
*/
static int __pg_walk_pmode(cr3_reg_t *cr3, offset_t _vaddr, pg_wlk_t *wlk)
{
pde32_t *pd, *pde;
pte32_t *pt, *pte;
uint32_t vaddr = _vaddr & 0xffffffff;
wlk->attr = 0;
pd = (pde32_t*)page_addr(cr3->addr);
if(vmm_area_range(pd, PG_4K_SIZE))
{
debug(PG_WLK, "pd32 in vmm area\n");
return VM_FAIL;
}
pde = &pd[pd32_idx(vaddr)];
debug(PG_WLK, "pde32 @ 0x%X = 0x%x\n", (offset_t)pde, pde->raw);
if(!pg_present(pde))
{
debug(PG_WLK, "pde32 not present\n");
wlk->type = PG_WALK_TYPE_PDE32;
wlk->entry = (void*)pde;
return VM_FAULT;
}
wlk->u = pde->lvl;
wlk->r = 1;
wlk->w = pde->rw;
wlk->x = 1;
if(__cr4.pse && pg_large(pde))
{
wlk->addr = pg_4M_addr((uint32_t)pde->page.addr) + pg_4M_offset(vaddr);
wlk->type = PG_WALK_TYPE_PDE32;
wlk->size = PG_4M_SIZE;
wlk->entry = (void*)pde;
goto __success;
}
pt = (pte32_t*)page_addr(pde->addr);
if(vmm_area_range(pt, PG_4K_SIZE))
{
debug(PG_WLK, "pt32 in vmm area\n");
return VM_FAIL;
}
pte = &pt[pt32_idx(vaddr)];
debug(PG_WLK, "pte32 @ 0x%X = 0x%x\n", (offset_t)pte, pte->raw);
if(!pg_present(pte))
{
debug(PG_WLK, "pte32 not present\n");
wlk->type = PG_WALK_TYPE_PTE32;
wlk->entry = (void*)pte;
return VM_FAULT;
}
wlk->addr = (offset_t)(pg_4K_addr((uint32_t)pte->addr) + pg_4K_offset(vaddr));
wlk->type = PG_WALK_TYPE_PTE32;
wlk->size = PG_4K_SIZE;
wlk->entry = (void*)pte;
wlk->u &= pte->lvl;
wlk->w &= pte->rw;
__success:
debug(PG_WLK, "pmode vaddr 0x%x -> guest paddr 0x%X\n", vaddr, wlk->addr);
return VM_DONE;
}
/*
** pmode+pae: 2MB and 4KB pages
** cr4.pse is used
*/
static int __pg_walk_pmode_pae(cr3_reg_t *cr3, offset_t _vaddr, pg_wlk_t *wlk)
{
pdpe_t *pdp, *pdpe;
pde64_t *pd, *pde;
pte64_t *pt, *pte;
uint32_t vaddr = _vaddr & 0xffffffff;
wlk->attr = 0;
pdp = (pdpe_t*)pg_32B_addr((offset_t)cr3->pae.addr);
if(vmm_area_range(pdp, PG_4K_SIZE))
{
debug(PG_WLK, "pdp_pae in vmm area\n");
return VM_FAIL;
}
pdpe = &pdp[pdp_pae_idx(vaddr)];
debug(PG_WLK, "pdpe_pae @ 0x%X = 0x%X\n", (offset_t)pdpe, pdpe->raw);
if(!pg_present(pdpe))
{
debug(PG_WLK, "pdpe_pae not present\n");
wlk->type = PG_WALK_TYPE_PDPE_PAE;
wlk->entry = (void*)pdpe;
return VM_FAULT;
}
pd = (pde64_t*)page_addr(pdpe->pae.addr);
if(vmm_area_range(pd, PG_4K_SIZE))
{
debug(PG_WLK, "pd64 in vmm area\n");
return VM_FAIL;
}
pde = &pd[pd64_idx(vaddr)];
debug(PG_WLK, "pde64 @ 0x%X = 0x%X\n", (offset_t)pde, pde->raw);
if(!pg_present(pde))
{
debug(PG_WLK, "pde not present\n");
wlk->type = PG_WALK_TYPE_PDE64;
wlk->entry = (void*)pde;
return VM_FAULT;
}
wlk->u = pde->lvl;
wlk->r = 1;
wlk->w = pde->rw;
wlk->x = pg64_executable(pde);
if(__cr4.pse && pg_large(pde))
{
wlk->addr = pg_2M_addr((offset_t)pde->page.addr) + pg_2M_offset(vaddr);
wlk->type = PG_WALK_TYPE_PDE64;
wlk->size = PG_2M_SIZE;
wlk->entry = (void*)pde;
goto __success;
}
pt = (pte64_t*)page_addr(pde->addr);
if(vmm_area_range(pt, PG_4K_SIZE))
{
debug(PG_WLK, "pt64 in vmm area\n");
return VM_FAIL;
}
pte = &pt[pt64_idx(vaddr)];
debug(PG_WLK, "pte64 @ 0x%X = 0x%X\n", (offset_t)pte, pte->raw);
if(!pg_present(pte))
{
debug(PG_WLK, "pte64 not present\n");
wlk->type = PG_WALK_TYPE_PTE64;
wlk->entry = (void*)pte;
return VM_FAULT;
}
wlk->addr = pg_4K_addr((offset_t)pte->addr) + pg_4K_offset(vaddr);
wlk->type = PG_WALK_TYPE_PTE64;
wlk->size = PG_4K_SIZE;
wlk->entry = (void*)pte;
wlk->u &= pte->lvl;
wlk->w &= pte->rw;
wlk->x &= pg64_executable(pte);
__success:
debug(PG_WLK, "pae vaddr 0x%x -> guest paddr 0x%X\n", vaddr, wlk->addr);
return VM_DONE;
}
static inline npg_pte64_t* __npg_get_pte_nocheck(npg_pde64_t *pde, offset_t addr)
{
npg_pte64_t *pt = (npg_pte64_t*)page_addr(pde->addr);
return &pt[pt64_idx(addr)];
}
/*
** pmode: 4MB and 4KB pages
** cr4.pse is used
*/
static inline
int pg_walk_pmode(cr3_reg_t *cr3,
offset_t _vaddr, offset_t *_paddr,
size_t *psz, int chk)
{
pde32_t *pd, *pde;
pte32_t *pt, *pte;
uint32_t paddr;
uint32_t vaddr = _vaddr & 0xffffffff;
pd = (pde32_t*)page_addr(cr3->addr);
if(chk && vmm_area(pd))
{
debug(PG_W, "pd in vmm area\n");
return 0;
}
pde = &pd[pd32_idx(vaddr)];
debug(PG_W, "pde @ 0x%X = 0x%x\n", (offset_t)pde, pde->raw);
if(!pg_present(pde))
{
debug(PG_W, "pde not present\n");
return 0;
}
if(__cr4.pse && pg_large(pde))
{
debug(PG_W, "large page found (pde->addr 0x%x)\n", (uint32_t)pde->page.addr);
paddr = pg_4M_addr((uint32_t)pde->page.addr) + pg_4M_offset(vaddr);
*psz = PG_4M_SIZE;
goto __prepare_addr;
}
pt = (pte32_t*)page_addr(pde->addr);
if(chk && vmm_area(pt))
{
debug(PG_W, "pt in vmm area\n");
return 0;
}
pte = &pt[pt32_idx(vaddr)];
debug(PG_W, "pte @ 0x%X = 0x%x\n", (offset_t)pte, pte->raw);
if(!pg_present(pte))
{
debug(PG_W, "pte not present\n");
return 0;
}
paddr = pg_4K_addr((uint32_t)pte->addr) + pg_4K_offset(vaddr);
*psz = PG_4K_SIZE;
__prepare_addr:
if(chk && vmm_area(paddr))
{
debug(PG_W, "paddr 0x%x in vmm area\n", paddr);
return 0;
}
debug(PG_W, "pmode vaddr 0x%x -> paddr 0x%x\n", vaddr, paddr);
*_paddr = (offset_t)paddr;
return 1;
}
/*
** lmode: 1GB, 2MB and 4KB pages
** cr4.pse is ignored
** 1GB cpuid feature must be checked
*/
static int __pg_walk_lmode(cr3_reg_t *cr3, offset_t vaddr, pg_wlk_t *wlk)
{
pml4e_t *pml4, *pml4e;
pdpe_t *pdp, *pdpe;
pde64_t *pd, *pde;
pte64_t *pt, *pte;
wlk->attr = 0;
pml4 = (pml4e_t*)page_addr(cr3->pml4.addr);
if(vmm_area_range(pml4, PG_4K_SIZE))
{
debug(PG_WLK, "pml4 in vmm area\n");
return VM_FAIL;
}
pml4e = &pml4[pml4_idx(vaddr)];
debug(PG_WLK, "pml4e @ 0x%X = %X\n", (offset_t)pml4e, pml4e->raw);
if(!pg_present(pml4e))
{
debug(PG_WLK, "pml4e not present\n");
wlk->type = PG_WALK_TYPE_PML4E;
wlk->entry = (void*)pml4e;
return VM_FAULT;
}
wlk->u = pml4e->lvl;
wlk->r = 1;
wlk->w = pml4e->rw;
wlk->x = pg64_executable(pml4e);
pdp = (pdpe_t*)page_addr(pml4e->addr);
if(vmm_area_range(pdp, PG_4K_SIZE))
{
debug(PG_WLK, "pdp in vmm area\n");
return VM_FAIL;
}
pdpe = &pdp[pdp_idx(vaddr)];
debug(PG_WLK, "pdpe @ 0x%X = 0x%X\n", (offset_t)pdpe, pdpe->raw);
if(!pg_present(pdpe))
{
debug(PG_WLK, "pdpe not present\n");
wlk->type = PG_WALK_TYPE_PDPE;
wlk->entry = (void*)pdpe;
return VM_FAULT;
}
wlk->u &= pdpe->lvl;
wlk->w &= pdpe->rw;
wlk->x &= pg64_executable(pdpe);
if(info->vmm.cpu.skillz.pg_1G && pg_large(pdpe))
{
wlk->addr = pg_1G_addr((offset_t)pdpe->page.addr) + pg_1G_offset(vaddr);
wlk->type = PG_WALK_TYPE_PDPE;
wlk->size = PG_1G_SIZE;
wlk->entry = (void*)pdpe;
goto __success;
}
pd = (pde64_t*)page_addr(pdpe->addr);
if(vmm_area_range(pd, PG_4K_SIZE))
{
debug(PG_WLK, "pd64 in vmm area\n");
return VM_FAIL;
}
pde = &pd[pd64_idx(vaddr)];
debug(PG_WLK, "pde64 @ 0x%X = 0x%X\n", (offset_t)pde, pde->raw);
if(!pg_present(pde))
{
debug(PG_WLK, "pde not present\n");
wlk->type = PG_WALK_TYPE_PDE64;
wlk->entry = (void*)pde;
return VM_FAULT;
}
wlk->u &= pde->lvl;
wlk->w &= pde->rw;
wlk->x &= pg64_executable(pde);
if(pg_large(pde))
{
wlk->addr = pg_2M_addr((offset_t)pde->page.addr) + pg_2M_offset(vaddr);
wlk->type = PG_WALK_TYPE_PDE64;
wlk->size = PG_2M_SIZE;
wlk->entry = (void*)pde;
goto __success;
}
pt = (pte64_t*)page_addr(pde->addr);
if(vmm_area_range(pt, PG_4K_SIZE))
{
debug(PG_WLK, "pt64 in vmm area\n");
return VM_FAIL;
}
pte = &pt[pt64_idx(vaddr)];
debug(PG_WLK, "pte64 @ 0x%X = 0x%X\n", (offset_t)pte, pte->raw);
if(!pg_present(pte))
{
debug(PG_WLK, "pte not present\n");
wlk->type = PG_WALK_TYPE_PTE64;
wlk->entry = (void*)pte;
return VM_FAULT;
}
wlk->addr = pg_4K_addr((offset_t)pte->addr) + pg_4K_offset(vaddr);
wlk->type = PG_WALK_TYPE_PTE64;
wlk->size = PG_4K_SIZE;
wlk->entry = (void*)pte;
wlk->u &= pte->lvl;
wlk->w &= pte->rw;
wlk->x &= pg64_executable(pte);
__success:
debug(PG_WLK, "lmode vaddr 0x%X -> guest paddr 0x%X\n", vaddr, wlk->addr);
return VM_DONE;
}
/*
** pmode+pae: 2MB and 4KB pages
** cr4.pse is used
*/
static inline
int pg_walk_pmode_pae(cr3_reg_t *cr3,
offset_t _vaddr, offset_t *paddr,
size_t *psz, int chk)
{
pdpe_t *pdp, *pdpe;
pde64_t *pd, *pde;
pte64_t *pt, *pte;
uint32_t vaddr = _vaddr & 0xffffffff;
pdp = (pdpe_t*)pg_32B_addr((offset_t)cr3->pae.addr);
if(chk && vmm_area(pdp))
{
debug(PG_W, "pdp in vmm area\n");
return 0;
}
pdpe = &pdp[pdp_pae_idx(vaddr)];
debug(PG_W, "pdpe @ 0x%X = 0x%X\n", (offset_t)pdpe, pdpe->raw);
if(!pg_present(pdpe))
{
debug(PG_W, "pdpe not present\n");
return 0;
}
pd = (pde64_t*)page_addr(pdpe->pae.addr);
if(chk && vmm_area(pd))
{
debug(PG_W, "pd in vmm area\n");
return 0;
}
pde = &pd[pd64_idx(vaddr)];
debug(PG_W, "pde @ 0x%X = 0x%X\n", (offset_t)pde, pde->raw);
if(!pg_present(pde))
{
debug(PG_W, "pde not present\n");
return 0;
}
if(__cr4.pse && pg_large(pde))
{
*paddr = pg_2M_addr((offset_t)pde->page.addr) + pg_2M_offset(vaddr);
*psz = PG_2M_SIZE;
goto __prepare_addr;
}
pt = (pte64_t*)page_addr(pde->addr);
if(chk && vmm_area(pt))
{
debug(PG_W, "pt in vmm area\n");
return 0;
}
pte = &pt[pt64_idx(vaddr)];
debug(PG_W, "pte @ 0x%X = 0x%X\n", (offset_t)pte, pte->raw);
if(!pg_present(pte))
{
debug(PG_W, "pte not present\n");
return 0;
}
*paddr = pg_4K_addr((offset_t)pte->addr) + pg_4K_offset(vaddr);
*psz = PG_4K_SIZE;
__prepare_addr:
if(chk && vmm_area(*paddr))
{
debug(PG_W, "paddr 0x%x in vmm area\n", *paddr);
return 0;
}
debug(PG_W, "pae vaddr 0x%x -> paddr 0x%x\n", vaddr, *paddr);
return 1;
}
/*
** Low level entry retrieval
*/
static inline npg_pdpe_t* __npg_get_pdpe_nocheck(npg_pml4e_t *pml4e, offset_t addr)
{
npg_pdpe_t *pdp = (npg_pdpe_t*)page_addr(pml4e->addr);
return &pdp[pdp_idx(addr)];
}
/*
** lmode: 1GB, 2MB and 4KB pages
** cr4.pse is ignored
** 1GB cpuid feature must be checked
*/
static inline
int pg_walk_lmode(cr3_reg_t *cr3,
offset_t vaddr, offset_t *paddr,
size_t *psz, int chk)
{
pml4e_t *pml4, *pml4e;
pdpe_t *pdp, *pdpe;
pde64_t *pd, *pde;
pte64_t *pt, *pte;
pml4 = (pml4e_t*)page_addr(cr3->pml4.addr);
if(chk && vmm_area(pml4))
{
debug(PG_W, "pml4 in vmm area\n");
return 0;
}
pml4e = &pml4[pml4_idx(vaddr)];
debug(PG_W, "pml4e @ 0x%X = %X\n", (offset_t)pml4e, pml4e->raw);
if(!pg_present(pml4e))
{
debug(PG_W, "pml4e not present\n");
return 0;
}
pdp = (pdpe_t*)page_addr(pml4e->addr);
if(chk && vmm_area(pdp))
{
debug(PG_W, "pdp in vmm area\n");
return 0;
}
pdpe = &pdp[pdp_idx(vaddr)];
debug(PG_W, "pdpe @ 0x%X = 0x%X\n", (offset_t)pdpe, pdpe->raw);
if(!pg_present(pdpe))
{
debug(PG_W, "pdpe not present\n");
return 0;
}
if(info->vmm.cpu.skillz.pg_1G && pg_large(pdpe))
{
*paddr = pg_1G_addr((offset_t)pdpe->page.addr) + pg_1G_offset(vaddr);
*psz = PG_1G_SIZE;
goto __prepare_addr;
}
pd = (pde64_t*)page_addr(pdpe->addr);
if(chk && vmm_area(pd))
{
debug(PG_W, "pd in vmm area\n");
return 0;
}
pde = &pd[pd64_idx(vaddr)];
debug(PG_W, "pde @ 0x%X = 0x%X\n", (offset_t)pde, pde->raw);
if(!pg_present(pde))
{
debug(PG_W, "pde not present\n");
return 0;
}
if(pg_large(pde))
{
*paddr = pg_2M_addr((offset_t)pde->page.addr) + pg_2M_offset(vaddr);
*psz = PG_2M_SIZE;
goto __prepare_addr;
}
pt = (pte64_t*)page_addr(pde->addr);
if(chk && vmm_area(pt))
{
debug(PG_W, "pt in vmm area\n");
return 0;
}
pte = &pt[pt64_idx(vaddr)];
debug(PG_W, "pte @ 0x%X = 0x%X\n", (offset_t)pte, pte->raw);
if(!pg_present(pte))
{
debug(PG_W, "pte not present\n");
return 0;
}
*paddr = pg_4K_addr((offset_t)pte->addr) + pg_4K_offset(vaddr);
*psz = PG_4K_SIZE;
__prepare_addr:
if(chk && vmm_area(*paddr))
{
debug(PG_W, "paddr 0x%x in vmm area\n", *paddr);
return 0;
}
debug(PG_W, "lmode vaddr 0x%X -> paddr 0x%X\n", vaddr, *paddr);
return 1;
}
static inline npg_pde64_t* __npg_get_pde_nocheck(npg_pdpe_t *pdpe, offset_t addr)
{
npg_pde64_t *pd = (npg_pde64_t*)page_addr(pdpe->addr);
return &pd[pd64_idx(addr)];
}
