Search results
Results from the WOW.Com Content Network
x86 virtualization is the use of hardware-assisted virtualization capabilities on an x86/x86-64 CPU.. In the late 1990s x86 virtualization was achieved by complex software techniques, necessary to compensate for the processor's lack of hardware-assisted virtualization capabilities while attaining reasonable performance.
However, BIOS manufacturers and OEMs have relied on SMM for newer functionality like Advanced Configuration and Power Interface (ACPI). [9] [10] Some uses of the System Management Mode are: Handle system events like memory or chipset errors; Manage system safety functions, such as shutdown on high CPU temperature; System Management BIOS (SMBIOS)
BIOS and software workarounds disable the TLB, and typically incur a performance penalty of at least 10%. [3] This penalty was not accounted for in pre-release previews of Phenom, hence the performance of early Phenoms delivered to customers may have been less than the preview benchmarks.
Some are chip harvests from Propus or Deneb with two cores disabled [1] Most Regor-based processors feature double the L2 cache per core (1 MB) as other Athlon II and Phenom II processors. Some units of the 210E, 215 and 220 are able to unlock 2 disabled cores sometimes with L3 cache if the motherboard BIOS enables that unlocking.
6 x86 virtualization is the method by which the x86 processor architecture is virtualized
An option ROM for the PC platform (i.e. the IBM PC and derived successor computer systems) is a piece of firmware that resides in ROM on an expansion card (or stored along with the main system BIOS), which gets executed to initialize the device and (optionally) add support for the device to the BIOS.
Blue Pill originally required AMD-V (Pacifica) virtualization support, but was later ported to support Intel VT-x (Vanderpool) as well. It was designed by Joanna Rutkowska and originally demonstrated at the Black Hat Briefings on August 3, 2006, with a reference implementation for the Microsoft Windows Vista kernel.
After AMD's decision to include this functionality in its AMD64 instruction set, Intel implemented the similar XD bit feature in x86 processors beginning with the Pentium 4 processors based on later iterations of the Prescott core. [3] The NX bit specifically refers to bit number 63 (i.e. the most significant bit) of a 64-bit entry in the page ...