From b3ef38de81c03b5f86fd69805351d64760a1bf09 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Mon, 26 Feb 2024 10:13:21 -0500
Subject: kernel/amd64: pmap: Add support for creating VAS

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 sys/include/vm/pmap.h | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'sys/include/vm')

diff --git a/sys/include/vm/pmap.h b/sys/include/vm/pmap.h
index fcef35d..6e37a00 100644
--- a/sys/include/vm/pmap.h
+++ b/sys/include/vm/pmap.h
@@ -53,6 +53,8 @@
 #define PMAP_WRITABLE __BIT(0)      /* Writable */
 #define PMAP_EXEC     __BIT(1)      /* Executable */
 
+#define is_vas_valid(vas) (vas.top_level != 0)
+
 /*
  * vm_ctx - Per core virtual memory context
  */
@@ -63,6 +65,8 @@ struct vm_ctx {
     struct spinlock dynalloc_lock;
 };
 
+struct vas pmap_create_vas(struct vm_ctx *);
+
 /*
  * Read virtual address space descriptor
  * and return it.
-- 
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