1. 07 5月, 2010 6 次提交
  2. 30 4月, 2010 1 次提交
  3. 29 4月, 2010 2 次提交
  4. 28 4月, 2010 4 次提交
  5. 27 4月, 2010 2 次提交
  6. 25 4月, 2010 1 次提交
    • D
      VMware Balloon driver · 453dc659
      Dmitry Torokhov 提交于
      This is a standalone version of VMware Balloon driver.  Ballooning is a
      technique that allows hypervisor dynamically limit the amount of memory
      available to the guest (with guest cooperation).  In the overcommit
      scenario, when hypervisor set detects that it needs to shuffle some
      memory, it instructs the driver to allocate certain number of pages, and
      the underlying memory gets returned to the hypervisor.  Later hypervisor
      may return memory to the guest by reattaching memory to the pageframes and
      instructing the driver to "deflate" balloon.
      
      We are submitting a standalone driver because KVM maintainer (Avi Kivity)
      expressed opinion (rightly) that our transport does not fit well into
      virtqueue paradigm and thus it does not make much sense to integrate with
      virtio.
      
      There were also some concerns whether current ballooning technique is the
      right thing.  If there appears a better framework to achieve this we are
      prepared to evaluate and switch to using it, but in the meantime we'd like
      to get this driver upstream.
      
      We want to get the driver accepted in distributions so that users do not
      have to deal with an out-of-tree module and many distributions have
      "upstream first" requirement.
      
      The driver has been shipping for a number of years and users running on
      VMware platform will have it installed as part of VMware Tools even if it
      will not come from a distribution, thus there should not be additional
      risk in pulling the driver into mainline.  The driver will only activate
      if host is VMware so everyone else should not be affected at all.
      Signed-off-by: NDmitry Torokhov <dtor@vmware.com>
      Cc: Avi Kivity <avi@redhat.com>
      Cc: Jeremy Fitzhardinge <jeremy@goop.org>
      Cc: Ingo Molnar <mingo@elte.hu>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      453dc659
  7. 24 4月, 2010 24 次提交