Re: [PATCH v3 24/29] KVM: PPC: Book3S PR: Support TAR handling for PR KVM HTM.

2018-05-23 Thread Simon Guo
Hi Paul, On Tue, May 22, 2018 at 09:44:47PM +1000, Paul Mackerras wrote: > On Mon, May 21, 2018 at 12:09:41PM +0800, wei.guo.si...@gmail.com wrote: > > From: Simon Guo > > > > Currently guest kernel doesn't handle TAR fac unavailable and it always > > runs with TAR bit

Re: [PATCH v3 24/29] KVM: PPC: Book3S PR: Support TAR handling for PR KVM HTM.

2018-05-22 Thread Paul Mackerras
On Mon, May 21, 2018 at 12:09:41PM +0800, wei.guo.si...@gmail.com wrote: > From: Simon Guo > > Currently guest kernel doesn't handle TAR fac unavailable and it always > runs with TAR bit on. PR KVM will lazily enable TAR. TAR is not a > frequent-use reg and it is not

[PATCH v3 24/29] KVM: PPC: Book3S PR: Support TAR handling for PR KVM HTM.

2018-05-20 Thread wei . guo . simon
From: Simon Guo Currently guest kernel doesn't handle TAR fac unavailable and it always runs with TAR bit on. PR KVM will lazily enable TAR. TAR is not a frequent-use reg and it is not included in SVCPU struct. Due to the above, the checkpointed TAR val might be a bogus