Re: [kvm-devel] [PATCH] Lazy FPU save/restore for VT

2007-04-26 Thread Anthony Liguori
Avi Kivity wrote: > Anthony Liguori wrote: > >> Howdy, >> >> Attached patch implements lazy-fpu save/restore for VT. VMEXIT time >> improves by about 10% (~550 cycles). I had to do a couple more things >> to get it working than I had to do with SVM. I changed the CR0 host >> mask to be all

Re: [kvm-devel] [PATCH] Lazy FPU save/restore for VT

2007-04-26 Thread Avi Kivity
Anthony Liguori wrote: > Howdy, > > Attached patch implements lazy-fpu save/restore for VT. VMEXIT time > improves by about 10% (~550 cycles). I had to do a couple more things > to get it working than I had to do with SVM. I changed the CR0 host > mask to be all 1's so that any attempt to wri

[kvm-devel] [PATCH] Lazy FPU save/restore for VT

2007-04-26 Thread Anthony Liguori
Howdy, Attached patch implements lazy-fpu save/restore for VT. VMEXIT time improves by about 10% (~550 cycles). I had to do a couple more things to get it working than I had to do with SVM. I changed the CR0 host mask to be all 1's so that any attempt to write to CR0 causes a VMEXIT. I do