Kernel: Move userspace virtual address range base to 0x10000

Now that the shared bottom 2 MiB virtual address mappings are gone
userspace can use lower virtual addresses.

3 files changed, 3 insertions, 3 deletions

diff --git a/Kernel/Memory/PageDirectory.cpp b/Kernel/Memory/PageDirectory.cpp
index 0e922005f7..dda93a48db 100644
--- a/Kernel/Memory/PageDirectory.cpp
+++ b/Kernel/Memory/PageDirectory.cpp
@@ -44,7 +44,7 @@ UNMAP_AFTER_INIT NonnullRefPtr<PageDirectory> PageDirectory::must_create_kernel_
 
 ErrorOr<NonnullRefPtr<PageDirectory>> PageDirectory::try_create_for_userspace(VirtualRangeAllocator const* parent_range_allocator)
 {
-    constexpr FlatPtr userspace_range_base = 0x00800000;
+    constexpr FlatPtr userspace_range_base = USER_RANGE_BASE;
     FlatPtr const userspace_range_ceiling = USER_RANGE_CEILING;
 
     auto directory = TRY(adopt_nonnull_ref_or_enomem(new (nothrow) PageDirectory));
diff --git a/Kernel/Memory/Region.cpp b/Kernel/Memory/Region.cpp
index 535a32d458..5132ec9835 100644
--- a/Kernel/Memory/Region.cpp
+++ b/Kernel/Memory/Region.cpp
@@ -179,7 +179,7 @@ bool Region::map_individual_page_impl(size_t page_index)
     VERIFY(m_page_directory->get_lock().is_locked_by_current_processor());
     auto page_vaddr = vaddr_from_page_index(page_index);
 
-    bool user_allowed = page_vaddr.get() >= 0x00800000 && is_user_address(page_vaddr);
+    bool user_allowed = page_vaddr.get() >= USER_RANGE_BASE && is_user_address(page_vaddr);
     if (is_mmap() && !user_allowed) {
         PANIC("About to map mmap'ed page at a kernel address");
     }
diff --git a/Kernel/Memory/Region.h b/Kernel/Memory/Region.h
index 403e9b743b..d93db7a969 100644
--- a/Kernel/Memory/Region.h
+++ b/Kernel/Memory/Region.h
@@ -89,7 +89,7 @@ public:
     void set_mmap(bool mmap) { m_mmap = mmap; }
 
     [[nodiscard]] bool is_user() const { return !is_kernel(); }
-    [[nodiscard]] bool is_kernel() const { return vaddr().get() < 0x00800000 || vaddr().get() >= kernel_mapping_base; }
+    [[nodiscard]] bool is_kernel() const { return vaddr().get() < USER_RANGE_BASE || vaddr().get() >= kernel_mapping_base; }
 
     PageFaultResponse handle_fault(PageFault const&);