From 2e2dc610d2abd6c12cf6dcda290b23fb77ecd704 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Sun, 23 Jun 2024 19:00:54 -0400
Subject: kernel: vm: Add g_kvas for kernel VAS

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 sys/include/vm/vm.h | 3 +++
 sys/vm/vm_init.c    | 3 +++
 2 files changed, 6 insertions(+)

(limited to 'sys')

diff --git a/sys/include/vm/vm.h b/sys/include/vm/vm.h
index bf49e67..9c63901 100644
--- a/sys/include/vm/vm.h
+++ b/sys/include/vm/vm.h
@@ -34,6 +34,7 @@
 #include <sys/limine.h>
 #include <sys/spinlock.h>
 #include <vm/tlsf.h>
+#include <vm/pmap.h>
 
 extern volatile struct limine_hhdm_request g_hhdm_request;
 
@@ -50,6 +51,8 @@ struct vm_ctx {
     tlsf_t tlsf_ctx;
 };
 
+extern struct vas g_kvas;
+
 struct vm_ctx *vm_get_ctx(void);
 void vm_init(void);
 
diff --git a/sys/vm/vm_init.c b/sys/vm/vm_init.c
index 703942b..b6bb8a1 100644
--- a/sys/vm/vm_init.c
+++ b/sys/vm/vm_init.c
@@ -31,11 +31,13 @@
 #include <sys/panic.h>
 #include <vm/vm.h>
 #include <vm/physmem.h>
+#include <vm/pmap.h>
 #include <assert.h>
 
 #define DYNALLOC_POOL_SZ        0x400000  /* 4 MiB */
 #define DYNALLOC_POOL_PAGES     (DYNALLOC_POOL_SZ / DEFAULT_PAGESIZE)
 
+struct vas g_kvas;
 static struct vm_ctx vm_ctx;
 volatile struct limine_hhdm_request g_hhdm_request = {
     .id = LIMINE_HHDM_REQUEST,
@@ -55,6 +57,7 @@ vm_init(void)
 
     vm_physmem_init();
 
+    g_kvas = pmap_read_vas();
     vm_ctx.dynalloc_pool_sz = DYNALLOC_POOL_SZ;
     vm_ctx.dynalloc_pool_pa = vm_alloc_frame(DYNALLOC_POOL_PAGES);
     if (vm_ctx.dynalloc_pool_pa == 0) {
-- 
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