<html><head></head><body>well, wouldn't be the first time a Windows update didn't work as expected, is my initial reaction.. <br><br><div class="gmail_quote">On May 6, 2018 5:22:43 AM EDT, Berillions <berillions@gmail.com> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div dir="ltr"><div><div><div><div><div>Hello,<br><br></div>With the new "Spring Update" from Microsoft for Windows 10, there are issue when Ryzen users want to update their VM to Win10 1803 or install directly from the ISO. I don't know if this issue exist for Intel CPUs.<br><br></div>For my case, if i set -cpu to "host-passthrough" and try to install Win10 1803, i have a BSOD when i boot on the DVD with this error message : <b><span class="gmail-st"><em>System Thread Exception Not Handled</em></span></b><br></div>I have the same thing if i install Win10 1709 and update the system to 1803, BSOD when i reboot.<br><br></div>The only solution which exist is to set -cpu to "Core2Duo" only. For Ryzen users, set to this and back to 'host-passthrough" failed. But this way works for ThreadRipper users.<br><br></div><div>The performance are not really differents for me :<br>- Host-passthrough (Ryzen 1600) with 12 CPUs passed through : 1104<br>
- Core2Duo with 12 CPUs passed through : 1066 <br><br></div><div>But by curiosity, where can come from this issue ?<br></div><div>Vfio, Qemu or OVMF ?<br><br></div><div>Thanks,<br></div><div>Maxime<br></div></div>
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