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Mode Based Execution Control (MBEC) is an extension to x86 SLAT implementations first available in Intel Kaby Lake and AMD Zen+ CPUs (known on the latter as Guest Mode Execute Trap or GMET). [10] The extension extends the execute bit in the extended page table (guest page table) into 2 bits - one for user execute, and one for supervisor execute ...
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.
At least one Asus board [which?] is known to have faulty BIOSes with corrupt ACPI IVRS tables; for such cases, under Linux, it is possible to specify custom mappings to override the faulty and/or missing BIOS-provided ones through the use of the ivrs_ioapic and ivrs_hpet kernel parameters.
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)
An example IOMMU is the graphics address remapping table (GART) used by AGP and PCI Express graphics cards on Intel Architecture and AMD computers. On the x86 architecture, prior to splitting the functionality of northbridge and southbridge between the CPU and Platform Controller Hub (PCH), I/O virtualization was not performed by the CPU but ...
BIOS POST card for ISA bus BIOS POST card for PCI bus Professional BIOS POST card for PCI bus Two POST seven-segment displays integrated on a computer motherboard. The original IBM BIOS made POST diagnostic information available by outputting a number to I/O port 0x80 (a screen display was not possible with some failure modes). Both progress ...
Solaris: supported in Solaris 10 Update 10 and Solaris 11. Windows: supported in Windows 7 SP1, Windows Server 2008 R2 SP1, [23] Windows 8, Windows 10. Windows Server 2008 R2 SP1 with Hyper-V requires a hotfix to support AMD AVX (Opteron 6200 and 4200 series) processors, KB2568088
AMD stated that they had provided a BIOS update to several motherboard manufacturers (namely: Asus, Gigabyte Technology, MSI, and ASRock) that would fix the problem. [49] In September 2014, AMD CEO Rory Read conceded the Bulldozer design had not been a "game-changing part", and that AMD had to live with the design for four years. [50]