diff options
Diffstat (limited to 'arch/x86_64/hal/paging.c')
| -rw-r--r-- | arch/x86_64/hal/paging.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86_64/hal/paging.c b/arch/x86_64/hal/paging.c index a0d6ca9..1587c62 100644 --- a/arch/x86_64/hal/paging.c +++ b/arch/x86_64/hal/paging.c @@ -28,6 +28,14 @@ phys_tovirt(uintptr_t phys) return (void*)(phys | IDENT_VIRT_BASE); } +physaddr_t +phys_fromvirt(virtaddr_t virt) +{ + if(virt < IDENT_VIRT_BASE) return 0; + if(virt > KERNEL_VIRT_BASE) return KPTR_TOPHYS(virt); + return virt & ~IDENT_VIRT_BASE; +} + uintptr_t paging_get_pml4(void) { |