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Kernel: Enable x86 SMEP (Supervisor Mode Execution Protection)

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This prevents the kernel from jumping to code in userspace memory.
This commit is contained in:
Andreas Kling 2020-01-01 01:56:58 +01:00
parent cece0d230d
commit 8602fa5b49
2 changed files with 23 additions and 2 deletions
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2
Kernel/VM/MemoryManager.h
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@ -90,6 +90,7 @@ private:
void register_region(Region&);
void unregister_region(Region&);
void detect_cpu_features();
void initialize_paging();
void flush_entire_tlb();
void flush_tlb(VirtualAddress);
@ -133,6 +134,7 @@ private:
bool m_quickmap_in_use { false };
bool m_has_nx_support { false };
bool m_has_smep_support { false };
};
struct ProcessPagingScope {