so the conclusion is if we have vm-flush, we make sure 128dw between
vm flush and CE ib, if we don't insert vm flush we stil make sure 128
DW between SWITCH_BUFFER and CE ib.
Good point.
if you reject this patch, please give me a solution to fix above VM fault
Well, we could follow the wind
current code missed the 128 DW after SWITCH_BUFFER, even without vm flush, we
still need those 128 DW betwen previous frame's SWITCH_BUFFER and current
frame's CE ib,
and this patch fixed this issue as well otherwise in SRIOV case (Unigeen
HEAVEN) CE will meet vm fault, and in steam OS case (D
