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Kernel: Hand out 64-bit addresses to userspace

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Gunnar Beutner 2021-07-18 02:49:47 +02:00 committed by Andreas Kling
parent 5938d882d8
commit f56ee10a13
Notes: sideshowbarker 2024-07-18 08:48:11 +09:00 
Author: https://github.com/gunnarbeutner
Commit: https://github.com/SerenityOS/serenity/commit/f56ee10a13b
Pull-request: https://github.com/SerenityOS/serenity/pull/8795
Reviewed-by: https://github.com/Hendiadyoin1
2 changed files with 2 additions and 2 deletions
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2
Kernel/Sections.h
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@ -24,4 +24,4 @@ extern "C" FlatPtr kernel_base;
#define KERNEL_QUICKMAP_PD (KERNEL_PT1024_BASE + 0x7000) #define KERNEL_QUICKMAP_PD (KERNEL_PT1024_BASE + 0x7000)
#define KERNEL_QUICKMAP_PER_CPU_BASE (KERNEL_PT1024_BASE + 0x8000) #define KERNEL_QUICKMAP_PER_CPU_BASE (KERNEL_PT1024_BASE + 0x8000)
#define USER_RANGE_CEILING 0xBE000000 #define USER_RANGE_CEILING (kernel_base - 0x2000000)

2
Kernel/VM/PageDirectory.cpp
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@ -69,7 +69,7 @@ UNMAP_AFTER_INIT void PageDirectory::allocate_kernel_directory()
PageDirectory::PageDirectory(const RangeAllocator* parent_range_allocator) PageDirectory::PageDirectory(const RangeAllocator* parent_range_allocator)
{ {
constexpr FlatPtr userspace_range_base = 0x00800000; constexpr FlatPtr userspace_range_base = 0x00800000;
constexpr FlatPtr userspace_range_ceiling = USER_RANGE_CEILING; FlatPtr userspace_range_ceiling = USER_RANGE_CEILING;
ScopedSpinLock lock(s_mm_lock); ScopedSpinLock lock(s_mm_lock);
if (parent_range_allocator) { if (parent_range_allocator) {