diff options
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/arch/amd64/amd64/pmap.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/sys/arch/amd64/amd64/pmap.c b/sys/arch/amd64/amd64/pmap.c index 325ce51..6c6bfcd 100644 --- a/sys/arch/amd64/amd64/pmap.c +++ b/sys/arch/amd64/amd64/pmap.c @@ -54,7 +54,7 @@ #define PTE_PCD BIT(4) /* Page-level cache disable */ #define PTE_ACC BIT(5) /* Accessed */ #define PTE_DIRTY BIT(6) /* Dirty (written-to page) */ -#define PTE_PAT BIT(7) +#define PTE_PS BIT(7) /* Page size */ #define PTE_GLOBAL BIT(8) #define PTE_NX BIT(63) /* Execute-disable */ @@ -114,6 +114,16 @@ pmap_extract(uint8_t level, vaddr_t va, vaddr_t *pmap, bool alloc) return NULL; } + /* + * TODO: Support huge pages... For now, don't let the + * bootloader fuck us up with their pre-kernel + * mappings and tell huge pages to get the fuck. + * + */ + if (ISSET(pmap[idx], PTE_PS)) { + pmap[idx] = 0; + } + if (ISSET(pmap[idx], PTE_P)) { next = (pmap[idx] & PTE_ADDR_MASK); return PHYS_TO_VIRT(next); |