On Sun, Apr 22, 2012 at 04:07, 陳韋任 <che...@iis.sinica.edu.tw> wrote: >> I am using qemu to run VMs on my computer with amd chip on board. >> However, my computer doesn't support amd-v, so the performance of the VM is >> low. >> I do have experiences in optimization of program using sse technique. >> Is it possible to speed up the qemu for those x86 chips that do not support >> hardware virtualization using sse instructions ? >> If so, I would like to contribute the the qemu community. > > Without hardware virtualization (amd-v, for example), QEMU uses binary > translation to run your VM. That says each guest instruction executed by > the VM is translated into TCG ops (QEMU IR), then translated into host > instructions and executed. Perhaps you have to look at tcg/i386/*, which > is the TCG ops -> host binary part. Or, you can look at target-i386/*, > which is the guest binary -> TCG ops part. Currently, guest SIMD instruction > is emulated by helper functions in scalar manner. Maybe you can try to map > guest SIMD into host SIMD.
Maybe kqemu could be revived, preferably using the same interface as KVM. > > Good Luck! > > Regards, > chenwj > > -- > Wei-Ren Chen (陳韋任) > Computer Systems Lab, Institute of Information Science, > Academia Sinica, Taiwan (R.O.C.) > Tel:886-2-2788-3799 #1667 > Homepage: http://people.cs.nctu.edu.tw/~chenwj >