nx bit造句

• NX bit support is available starting with CMS version 6.0 . 4.
• Because of this, Windows is able to enforce the NX bit on old programs.
• How does the NX bit actually work?
• An example is the NX bit hardware feature, supported by Intel, AMD and ARM processors.
• It also uses the topmost bit of the 64-bit page table entry as an NX bit.
• However, the NX bit is being increasingly used in conventional von Neumann architecture processors, for security reasons.
• An operating system with support for the NX bit may mark certain areas of memory as non-executable.
• The term " NX bit " itself is sometimes used to describe similar technologies in other processors.
• On IA-32 architectures, NX bit emulation is done by changing the permission level of non-executable pages.
• Some early Intel 64 processors lacked the NX bit required for W ^ X, but this appeared in later chips.
• PTEs include read / write access permission based on privilege, cacheability information, an NX bit, and a non-secure bit.
• As of Solaris 10 ( 2005 ), use of the NX bit is automatically enabled by default on x86 processors that support this feature.
• Windows allows programs to control which pages disallow execution through its linkers have always used this flag correctly, even long before the NX bit.
• Windows implements software DEP ( without the use of the NX bit ) through Microsoft's " Safe Structured Exception Handling " ( SafeSEH ).
• Only in a few cases have there been problems; Microsoft's own . NET Runtime had problems with the NX bit and was updated.
• It makes use of hardware features such as the NX bit ( no-execute bit ), or in some cases software emulation of those features.
• In addition, if the CPU does not provide an explicit NX bit, PaX can emulate ( supply ) an NX bit by one of several methods.
• In addition, if the CPU does not provide an explicit NX bit, PaX can emulate ( supply ) an NX bit by one of several methods.
• When the PAGEEXEC method is used on a CPU supplying a hardware NX bit, the hardware NX bit is used, thus no significant overhead is incurred.
• When the PAGEEXEC method is used on a CPU supplying a hardware NX bit, the hardware NX bit is used, thus no significant overhead is incurred.