diff options
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/arch/amd64/amd64/pmap.c | 13 | ||||
| -rw-r--r-- | sys/include/vm/pmap.h | 6 |
2 files changed, 19 insertions, 0 deletions
diff --git a/sys/arch/amd64/amd64/pmap.c b/sys/arch/amd64/amd64/pmap.c index 2760532..54d4ca3 100644 --- a/sys/arch/amd64/amd64/pmap.c +++ b/sys/arch/amd64/amd64/pmap.c @@ -228,6 +228,19 @@ pmap_switch_vas(struct vm_ctx *ctx, struct vas vas) : "memory"); } +/* + * TODO: During the mapping of a virtual address, a level + * may be allocated. This function does not handle the + * freeing of allocated levels. We should keep track + * of levels allocated and free them here. + */ +int +pmap_free_vas(struct vm_ctx *ctx, struct vas vas) +{ + vm_free_pageframe(vas.top_level, 1); + return 0; +} + struct vas pmap_read_vas(void) { diff --git a/sys/include/vm/pmap.h b/sys/include/vm/pmap.h index ebabd32..3380199 100644 --- a/sys/include/vm/pmap.h +++ b/sys/include/vm/pmap.h @@ -90,6 +90,12 @@ struct vas pmap_read_vas(void); int pmap_map(struct vm_ctx *, struct vas, vaddr_t, paddr_t, vm_prot_t); /* + * Get rid of a virtual address space and free + * resources. + */ +int pmap_free_vas(struct vm_ctx *, struct vas); + +/* * Unmap a page. */ int pmap_unmap(struct vm_ctx *, struct vas, vaddr_t); |