[PATCH 0/4] KVM: x86: kvm_mwait_in_guest() cleanup and fixes

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



kvm_mwait_in_guest() was overcomplicated and also missed one AMD bug
that should prevent MWAIT pass through.

This series ignores errata that don't have any Linux bug defined;
I know of two minor (not affecting the host) Core 2 errata:
  AG36.  Split Locked Stores May not Trigger the Monitoring Hardware
  AG106.  A REP STOS/MOVS to a MONITOR/MWAIT Address Range May Prevent
          Triggering of the Monitoring Hardware

None of them are really worthy of a new condition if Linux never hit
them ... we still have the OS X bug that Gabriel is hitting, but I'm ok
with the original approach that sacrificed it for "greater good".


Radim Krčmář (4):
  KVM: svm: prevent MWAIT in guest with erratum 400
  KVM: x86: prevent MWAIT in guest with buggy MONITOR
  KVM: x86: drop bogus MWAIT check
  KVM: x86: simplify kvm_mwait_in_guest()

 arch/x86/kvm/x86.h | 33 +++------------------------------
 1 file changed, 3 insertions(+), 30 deletions(-)

-- 
2.12.2




[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]

  Powered by Linux