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Kernel: Move userspace virtual address range base to 0x10000

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Now that the shared bottom 2 MiB virtual address mappings are gone
userspace can use lower virtual addresses.
This commit is contained in:
Idan Horowitz 2021-12-19 19:36:42 +02:00 • committed by Brian Gianforcaro
parent fccd0432a1
commit 5f4a67434c
7 changed files with 18 additions and 4 deletions
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2
Kernel/Memory/PageDirectory.cpp
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@ -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));