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

2026-03-14 22:39:14 +00:00
parent f04c524bb5
commit 0af35c70ef
12 changed files with 826 additions and 100 deletions
--- a/arch/x86_64/pmap.c
+++ b/arch/x86_64/pmap.c
@@ -372,13 +372,8 @@ kern_status_t pmap_handle_fault(
 		return KERN_FATAL_ERROR;
 	}

-	unsigned long lock_flags;
-	address_space_lock_irqsave(space, &lock_flags);
-	kern_status_t status
-		= address_space_demand_map(space, fault_addr, flags);
-	address_space_unlock_irqrestore(space, lock_flags);
-
-	return status;
+	/* this must be called with `space` unlocked. */
+	return address_space_demand_map(space, fault_addr, flags);
 }

 kern_status_t pmap_add(