From: Tulio A M Mendes <tadryanom@hotmail.com>
Date: Tue, 10 Feb 2026 04:01:02 +0000 (-0300)
Subject: fix: move VBE framebuffer VA from 0xD0000000 to 0xE0000000
X-Git-Url: https://projects.tadryanom.me/?a=commitdiff_plain;h=8d1051b321994c4a09af6c86b47dc21546420ff8;p=AdrOS.git

fix: move VBE framebuffer VA from 0xD0000000 to 0xE0000000

The kernel heap starts at KHEAP_START=0xD0000000 and spans 10MB.
The VBE framebuffer was also mapped at 0xD0000000, causing a
virtual address collision that would corrupt the heap when a
framebuffer is present.

Move VBE mapping to 0xE0000000 which is safely above the heap.

Passes: make, cppcheck, QEMU smoke test.
---

diff --git a/src/drivers/vbe.c b/src/drivers/vbe.c
index 6d620ff9..08bce6e0 100644
--- a/src/drivers/vbe.c
+++ b/src/drivers/vbe.c
@@ -31,7 +31,7 @@ int vbe_init(const struct boot_info* bi) {
     g_vbe.size = g_vbe.pitch * g_vbe.height;
 
     uint32_t pages = (g_vbe.size + 0xFFF) >> 12;
-    uintptr_t virt_base = 0xD0000000U;
+    uintptr_t virt_base = 0xE0000000U;
 
     for (uint32_t i = 0; i < pages; i++) {
         vmm_map_page((uint64_t)(g_vbe.phys_addr + i * 0x1000),