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gptkbp:instanceOf
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CPU feature
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gptkbp:alsoKnownAs
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gptkb:NX_bit
gptkb:Execute_Disable_Bit
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gptkbp:architecture
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x86
x86-64
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gptkbp:bitPosition
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63rd bit in page table entry
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gptkbp:category
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gptkb:microprocessor
Security feature
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gptkbp:controlledBy
|
Page table entry
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gptkbp:effect
|
Prevents execution of code in marked pages
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gptkbp:enables
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gptkb:Data_Execution_Prevention_(DEP)
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https://www.w3.org/2000/01/rdf-schema#label
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XD bit
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gptkbp:introduced
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gptkb:Intel
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gptkbp:introducedIn
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gptkb:Intel_Pentium_4_Prescott
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gptkbp:marketedAs
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gptkb:Enhanced_Virus_Protection_(by_AMD)
Execute Disable Bit (by Intel)
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gptkbp:prevention
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Execution of code in data-only memory regions
|
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gptkbp:purpose
|
Prevents execution of code in certain memory regions
|
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gptkbp:relatedStandard
|
gptkb:No_eXecute_(NX)_bit
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gptkbp:relatedTo
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gptkb:Data_Execution_Prevention
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gptkbp:setIn
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gptkb:operating_system
|
|
gptkbp:standardizedBy
|
x86 architecture extensions
|
|
gptkbp:supportedBy
|
gptkb:AMD_Athlon_64
gptkb:Intel_Pentium_4_Prescott
gptkb:Linux_kernel_2.6.8_and_later
gptkb:Windows_XP_SP2_and_later
AMD processors (as NX bit)
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gptkbp:usedFor
|
Buffer overflow protection
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gptkbp:bfsParent
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gptkb:Core_2
gptkb:Pentium_D
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gptkbp:bfsLayer
|
5
|