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Kernel: Don't clone kernel mappings for bottom 2 MiB VM into processes

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I can't think of anything that needs these mappings anymore, so let's
get rid of them.
This commit is contained in:
Andreas Kling 2021-01-31 15:20:18 +01:00
parent fc4eae87f8
commit da7b21dc06
1 changed files with 0 additions and 7 deletions
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7
Kernel/VM/PageDirectory.cpp
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@ -135,13 +135,6 @@ PageDirectory::PageDirectory(Process& process, const RangeAllocator* parent_rang
MM.unquickmap_page();
}
// Clone bottom 2 MiB of mappings from kernel_page_directory
PageDirectoryEntry buffer;
auto* kernel_pd = MM.quickmap_pd(MM.kernel_page_directory(), 0);
memcpy(&buffer, kernel_pd, sizeof(PageDirectoryEntry));
auto* new_pd = MM.quickmap_pd(*this, 0);
memcpy(new_pd, &buffer, sizeof(PageDirectoryEntry));
// If we got here, we successfully created it. Set m_process now
m_process = &process;