wash/mango
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

vm: implement demand-paging via userspace services with vm-controller

Browse Source
This commit is contained in:
max 🍓
2026-03-14 22:39:14 +00:00
parent f04c524bb5
commit 0af35c70ef
12 changed files with 826 additions and 100 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
include/kernel/vm-controller.h
View File

@@ -18,16 +18,24 @@ enum page_request_status {
struct vm_controller {
struct object vc_base;
/* tree of struct vm_objects bound to this controller, keyed with the
* vm_key_t specified when the object(s) were created. */
* equeue_key_t specified when the object(s) were created. */
struct btree vc_objects;
/* tree of pending page requests */
struct btree vc_requests;
/* the equeue to send async page requests to */
struct equeue *vc_eq;
equeue_key_t vc_eq_key;
/* the number of page requests queued with status PAGE_REQUEST_PENDING.
* used to assert/clear VM_CONTROLLER_SIGNAL_REQUEST_RECEIVED */
size_t vc_requests_waiting;
};
struct page_request {
uint64_t req_id;
unsigned int req_type;
enum page_request_status req_status;
kern_status_t req_result;
spin_lock_t req_lock;
struct vm_object *req_object;
struct thread *req_sender;
struct btree_node req_node;
@@ -45,7 +53,8 @@ extern kern_status_t vm_controller_recv(
equeue_packet_page_request_t *out);
extern kern_status_t vm_controller_recv_async(
struct vm_controller *ctrl,
struct equeue *eq);
struct equeue *eq,
equeue_key_t key);
extern kern_status_t vm_controller_create_object(
struct vm_controller *ctrl,
@@ -58,10 +67,18 @@ extern kern_status_t vm_controller_create_object(
extern kern_status_t vm_controller_detach_object(
struct vm_controller *ctrl,
struct vm_object *vmo);
extern kern_status_t vm_controller_supply_pages(
struct vm_controller *ctrl,
struct vm_object *dst,
off_t dst_offset,
struct vm_object *src,
off_t src_offset,
size_t count);
extern kern_status_t vm_controller_send_request(
struct vm_controller *ctrl,
struct page_request *req);
struct page_request *req,
unsigned long *irq_flags);
DEFINE_OBJECT_LOCK_FUNCTION(vm_controller, vc_base)