From 2c17a4db1d32a9ace5bdb430a0faf7e28a00110e Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Tue, 16 Sep 2025 00:29:14 -0400
Subject: kern/amd64: mmu: Add mmu_new_vas() routine

This commit introduces the ability to create new virtual address spaces
for user programs and a zeroed lower half.

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 src/sys/include/vm/mmu.h | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'src/sys/include/vm')

diff --git a/src/sys/include/vm/mmu.h b/src/sys/include/vm/mmu.h
index 5c1c2bb..908748b 100644
--- a/src/sys/include/vm/mmu.h
+++ b/src/sys/include/vm/mmu.h
@@ -97,4 +97,13 @@ int mmu_map_single(struct vm_vas *vas, struct mmu_map *spec, int prot);
  */
 int mmu_this_vas(struct vm_vas *vasres_p);
 
+/*
+ * Create a new virtual address structure with a zeroed
+ * user porition.
+ *
+ * Returns zero on success, otherwise a less than zero
+ * value on failure.
+ */
+int mmu_new_vas(struct vm_vas *res);
+
 #endif  /* !_MACHINE_MMU_H_ */
-- 
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