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Kernel: Make MemoryManager compile on aarch64

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James Mintram 2022-04-02 23:56:20 +01:00 • committed by Brian Gianforcaro
parent 6299a69253
commit d79c772c87
10 changed files with 119 additions and 22 deletions
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50
Kernel/Arch/x86/common/PageDirectory.cpp Normal file
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/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2018-2022, James Mintram <me@jamesrm.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Singleton.h>
#include <Kernel/Memory/PageDirectory.h>
#include <Kernel/Thread.h>
namespace Kernel::Memory {
static Singleton<IntrusiveRedBlackTree<&PageDirectory::m_tree_node>> s_cr3_map;
static IntrusiveRedBlackTree<&PageDirectory::m_tree_node>& cr3_map()
{
VERIFY_INTERRUPTS_DISABLED();
return *s_cr3_map;
}
void PageDirectory::register_page_directory(PageDirectory* directory)
{
cr3_map().insert(directory->cr3(), *directory);
}
void PageDirectory::deregister_page_directory(PageDirectory* directory)
{
cr3_map().remove(directory->cr3());
}
RefPtr<PageDirectory> PageDirectory::find_current()
{
SpinlockLocker lock(s_mm_lock);
return cr3_map().find(read_cr3());
}
void activate_kernel_page_directory(PageDirectory const& pgd)
{
write_cr3(pgd.cr3());
}
void activate_page_directory(PageDirectory const& pgd, Thread* current_thread)
{
current_thread->regs().cr3 = pgd.cr3();
write_cr3(pgd.cr3());
}
}