Dor Laor wrote: > > Do you know why Xen guy choose of implementing it in Xen? Why didn't > they rip Qemu implementation? > With PIC in Xen, CPU2K gets 6.5% performance gain in old 1000HZ linux kernel, KB gets 14% gain. We also did a shared PIC model which share PIC state among Qemu & VMM with less LOC in VMM, it can get similar performance gain (5.8% in my test). BTW, at that time, PIT is in VMM already. Eddie
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