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diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index 89a47b5aff07..04e6c819b28a 100644 --- a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt | |||
| @@ -451,3 +451,33 @@ Why: OSS sound_core grabs all legacy minors (0-255) of SOUND_MAJOR | |||
| 451 | will also allow making ALSA OSS emulation independent of | 451 | will also allow making ALSA OSS emulation independent of |
| 452 | sound_core. The dependency will be broken then too. | 452 | sound_core. The dependency will be broken then too. |
| 453 | Who: Tejun Heo <tj@kernel.org> | 453 | Who: Tejun Heo <tj@kernel.org> |
| 454 | |||
| 455 | ---------------------------- | ||
| 456 | |||
| 457 | What: Support for VMware's guest paravirtuliazation technique [VMI] will be | ||
| 458 | dropped. | ||
| 459 | When: 2.6.37 or earlier. | ||
| 460 | Why: With the recent innovations in CPU hardware acceleration technologies | ||
| 461 | from Intel and AMD, VMware ran a few experiments to compare these | ||
| 462 | techniques to guest paravirtualization technique on VMware's platform. | ||
| 463 | These hardware assisted virtualization techniques have outperformed the | ||
| 464 | performance benefits provided by VMI in most of the workloads. VMware | ||
| 465 | expects that these hardware features will be ubiquitous in a couple of | ||
| 466 | years, as a result, VMware has started a phased retirement of this | ||
| 467 | feature from the hypervisor. We will be removing this feature from the | ||
| 468 | Kernel too. Right now we are targeting 2.6.37 but can retire earlier if | ||
| 469 | technical reasons (read opportunity to remove major chunk of pvops) | ||
| 470 | arise. | ||
| 471 | |||
| 472 | Please note that VMI has always been an optimization and non-VMI kernels | ||
| 473 | still work fine on VMware's platform. | ||
| 474 | Latest versions of VMware's product which support VMI are, | ||
| 475 | Workstation 7.0 and VSphere 4.0 on ESX side, future maintainence | ||
| 476 | releases for these products will continue supporting VMI. | ||
| 477 | |||
| 478 | For more details about VMI retirement take a look at this, | ||
| 479 | http://blogs.vmware.com/guestosguide/2009/09/vmi-retirement.html | ||
| 480 | |||
| 481 | Who: Alok N Kataria <akataria@vmware.com> | ||
| 482 | |||
| 483 | ---------------------------- | ||
