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28 lines
630 B
C++
28 lines
630 B
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/Arch/x86/InterruptDisabler.h>
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#include <Kernel/Panic.h>
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#include <Kernel/VM/MemoryManager.h>
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#include <Kernel/VM/ProcessPagingScope.h>
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namespace Kernel {
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ProcessPagingScope::ProcessPagingScope(Process& process)
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{
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VERIFY(Thread::current() != nullptr);
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m_previous_cr3 = read_cr3();
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MM.enter_process_paging_scope(process);
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}
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ProcessPagingScope::~ProcessPagingScope()
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{
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InterruptDisabler disabler;
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Thread::current()->regs().cr3 = m_previous_cr3;
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write_cr3(m_previous_cr3);
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}
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}
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