diff options
| author | Ian Moffett <ian@osmora.org> | 2024-07-09 14:24:02 -0400 |
|---|---|---|
| committer | Ian Moffett <ian@osmora.org> | 2024-07-09 14:24:02 -0400 |
| commit | 2b8dbfda5913761aa0bd42de9f9adf3a2a3bd4e5 (patch) | |
| tree | f0c44bc714850f691ac104a015c0eee7989bd3ac /sys/include | |
| parent | 6ff4b38d6378f36dc11acd6bee4c676f41462cc1 (diff) | |
kernel/amd64: Add function to set cache policy
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'sys/include')
| -rw-r--r-- | sys/include/vm/pmap.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/sys/include/vm/pmap.h b/sys/include/vm/pmap.h index 4cd334c..741eaf2 100644 --- a/sys/include/vm/pmap.h +++ b/sys/include/vm/pmap.h @@ -39,6 +39,10 @@ #define PROT_EXEC BIT(1) /* Executable */ #define PROT_USER BIT(2) /* User accessible */ +/* Caching types */ +#define VM_CACHE_UC 0x00000U /* Uncachable */ +#define VM_CACHE_WT 0x00001U /* Write-through */ + typedef uint32_t vm_prot_t; /* @@ -71,4 +75,10 @@ int pmap_map(struct vas vas, vaddr_t va, paddr_t pa, vm_prot_t prot); */ int pmap_unmap(struct vas vas, vaddr_t va); +/* + * Mark a virtual address with a specific + * caching type. + */ +int pmap_set_cache(struct vas vas, vaddr_t va, int type); + #endif /* !_VM_PMAP_H_ */ |