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vm: add vm-controller object

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This commit is contained in:
max 🍓
2026-03-12 20:39:28 +00:00
parent 3fd608b623
commit 921c91c02a
4 changed files with 209 additions and 0 deletions
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4
include/kernel/syscall.h
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@@ -176,6 +176,10 @@ extern kern_status_t sys_msg_write(
size_t nr_in,
size_t *nr_written);
extern kern_status_t sys_kern_object_wait(
kern_wait_item_t *items,
size_t nr_items);
extern virt_addr_t syscall_get_function(unsigned int sysid);
#endif

68
include/kernel/vm-controller.h Normal file
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@@ -0,0 +1,68 @@
#ifndef KERNEL_VM_CONTROLLER_H_
#define KERNEL_VM_CONTROLLER_H_
#include <kernel/locks.h>
#include <kernel/object.h>
#include <mango/types.h>
struct thread;
struct equeue;
struct vm_object;
enum page_request_status {
PAGE_REQUEST_PENDING = 0,
PAGE_REQUEST_IN_PROGRESS,
PAGE_REQUEST_COMPLETE,
};
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. */
struct btree vc_objects;
/* tree of pending page requests */
struct btree vc_requests;
};
struct page_request {
uint64_t req_id;
enum page_request_status req_status;
kern_status_t req_result;
struct vm_object *req_object;
struct thread *req_sender;
struct btree_node req_node;
off_t req_offset;
size_t req_length;
};
extern kern_status_t vm_controller_type_init(void);
extern struct vm_controller *vm_controller_cast(struct object *obj);
extern struct vm_controller *vm_controller_create(void);
extern kern_status_t vm_controller_recv(
struct vm_controller *ctrl,
equeue_packet_page_request_t *out);
extern kern_status_t vm_controller_recv_async(
struct vm_controller *ctrl,
struct equeue *eq);
extern kern_status_t vm_controller_create_object(
struct vm_controller *ctrl,
const char *name,
size_t name_len,
equeue_key_t key,
size_t data_len,
vm_prot_t prot,
struct vm_object **out);
extern kern_status_t vm_controller_detach_object(
struct vm_controller *ctrl,
struct vm_object *vmo);
extern kern_status_t vm_controller_send_request(
struct vm_controller *ctrl,
struct page_request *req);
DEFINE_OBJECT_LOCK_FUNCTION(vm_controller, vc_base)
#endif