Lines Matching refs:hardware
22 First, we will describe the various timekeeping hardware available, then
28 information relevant to KVM and hardware-based virtualization.
34 First we discuss the basic hardware devices available. TSC and the related
267 the APIC CPU-local memory-mapped hardware. Beware that CPU errata may affect
283 the de facto standard of PC hardware is to emulate these older devices. Some
284 systems designated as legacy free may support only the HPET as a hardware timer
287 The HPET spec is rather loose and vague, requiring at least 3 hardware timers,
320 RDMSR, RDTSC, or RDTSCP (when available) instructions. In the past, hardware
321 limitations made it possible to write the TSC, but generally on old hardware it
338 Both VMX and SVM provide extension fields in the virtualization hardware which
340 promise to allow the TSC to additionally be scaled, but this hardware is not
352 Several hardware limitations make the problem worse - if it is not possible to
358 socket systems or those with special hardware support.
451 X86_FEATURE_TSC : The TSC is available in hardware
470 This same problem can occur on native hardware to a degree, as SMM mode may
521 serialization can pose a performance issue for hardware virtualization. An
585 running under hardware virtualization due to timer interrupts being delayed or
593 can happen if the system is controlling physical hardware, or issues delays to
595 in general for a virtualized system; hardware control software can't be