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c4a3af12fc
This is the same address that the x86_64 kernel runs at, and allows us to run the kernel at a high virtual memory address. Since we now run completely in high virtual memory, we can also unmap the identity mapping. Additionally some changes in MMU.cpp are required to successfully boot.
31 lines
1.0 KiB
C
31 lines
1.0 KiB
C
/*
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* Copyright (c) 2018-2021, 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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#pragma once
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#include <AK/Platform.h>
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#ifdef __cplusplus
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# include <AK/Types.h>
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# include <Kernel/BootInfo.h>
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#endif
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#define READONLY_AFTER_INIT __attribute__((section(".ro_after_init")))
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#define UNMAP_AFTER_INIT NEVER_INLINE __attribute__((section(".unmap_after_init")))
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#define KERNEL_MAPPING_BASE 0x2000000000
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#define KERNEL_PD_END (kernel_mapping_base + KERNEL_PD_SIZE)
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#define KERNEL_PT1024_OFFSET 0x3FE00000
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#define KERNEL_PT1024_BASE (kernel_mapping_base + KERNEL_PT1024_OFFSET)
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#define KERNEL_MAX_CPU_COUNT 64
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#define KERNEL_QUICKMAP_PT_PER_CPU_BASE (KERNEL_PT1024_BASE + (1 * KERNEL_MAX_CPU_COUNT * PAGE_SIZE))
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#define KERNEL_QUICKMAP_PD_PER_CPU_BASE (KERNEL_PT1024_BASE + (2 * KERNEL_MAX_CPU_COUNT * PAGE_SIZE))
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#define KERNEL_QUICKMAP_PER_CPU_BASE (KERNEL_PT1024_BASE + (3 * KERNEL_MAX_CPU_COUNT * PAGE_SIZE))
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#define USER_RANGE_BASE 0x10000
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#define USER_RANGE_CEILING (kernel_mapping_base - 0x2000000)
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