diff options
Diffstat (limited to 'sys/amd64/include/pmap.h')
| -rw-r--r-- | sys/amd64/include/pmap.h | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/sys/amd64/include/pmap.h b/sys/amd64/include/pmap.h index 7d3e91bcd9b9..08e96027a5ed 100644 --- a/sys/amd64/include/pmap.h +++ b/sys/amd64/include/pmap.h @@ -169,11 +169,12 @@ * the recursive page table map. */ #define NDMPML4E 8 +#define NDMPML5E 32 /* - * These values control the layout of virtual memory. The starting address - * of the direct map, which is controlled by DMPML4I, must be a multiple of - * its size. (See the PHYS_TO_DMAP() and DMAP_TO_PHYS() macros.) + * These values control the layout of virtual memory. The starting + * address of the direct map is controlled by DMPML4I on LA48 and + * DMPML5I on LA57. * * Note: KPML4I is the index of the (single) level 4 page that maps * the KVA that holds KERNBASE, while KPML4BASE is the index of the @@ -191,6 +192,7 @@ #define KPML4BASE (NPML4EPG-NKPML4E) /* KVM at highest addresses */ #define DMPML4I rounddown(KPML4BASE-NDMPML4E, NDMPML4E) /* Below KVM */ +#define DMPML5I (NPML5EPG / 2 + 1) #define KPML4I (NPML4EPG-1) #define KPDPI (NPDPEPG-2) /* kernbase at -2GB */ @@ -548,6 +550,18 @@ pmap_pml5e_index(vm_offset_t va) return ((va >> PML5SHIFT) & ((1ul << NPML5EPGSHIFT) - 1)); } +struct kva_layout_s { + vm_offset_t kva_min; + vm_offset_t dmap_low; /* DMAP_MIN_ADDRESS */ + vm_offset_t dmap_high; /* DMAP_MAX_ADDRESS */ + vm_offset_t lm_low; /* LARGEMAP_MIN_ADDRESS */ + vm_offset_t lm_high; /* LARGEMAP_MAX_ADDRESS */ + vm_offset_t km_low; /* VM_MIN_KERNEL_ADDRESS */ + vm_offset_t km_high; /* VM_MAX_KERNEL_ADDRESS */ + vm_offset_t rec_pt; +}; +extern struct kva_layout_s kva_layout; + #endif /* !LOCORE */ #endif /* !_MACHINE_PMAP_H_ */ |