Intel core 2 Duo T5850 Specifiche Scaricare il pdf (Pagina 266)

Intel

64 and IA-32 Architectures Software Developer’s Manual Documentation Changes 266

Documentation Changes

The following software usage is consistent with these limitations:

• VMCLEAR should be executed for a VMCS before it is used for VM entry for the first

time.

• VMLAUNCH should be used for the first VM entry using a VMCS after VMCLEAR has

been executed for that VMCS.

• VMRESUME should be used for any subsequent VM entry using a VMCS (until the

next execution of VMCLEAR for the VMCS).

It is expected that, in general, VMRESUME will have lower latency than VMLAUNCH.

Since “migrating” a VMCS from one logical processor to another requires use of

VMCLEAR (see Section 21.10.1), which sets the launch state of the VMCS to “clear”, such

migration requires the next VM entry to be performed using VMLAUNCH. Software devel-

opers can avoid the performance cost of increased VM-entry latency by avoiding unnec-

essary migration of a VMCS from one logical processor to another.

...

1 2 ... 261 262 263 264 265 266 267 268 269 270 271 ... 291 292

Nessun commento

Intel core 2 Duo T5850 Specifiche Pagina 266