Long time no see. Just picked up a Ryzen 7 1700 along with a Gigabyte GA-AB350 Gaming 3 motherboard and all was going well until I fired up VirtualBox and realized that AMD-V based acceleration was disabled. I look in task manager, and sure enough it said that virtualization was disabled. I checked the BIOS and the only mention of virtualization I could find is the option to enable IOMMU support. About to fire up Linux on this thing to see if it's just a Windows 10 thing, but if not then wtf? Has anyone else experienced the same thing with Ryzen? Why would Gigabyte exclude a feature that has been including in every AMD chip in the past decade? I sent them a support ticket but haven't gotten a reply yet.
Edit: So apparently to enable virtualization support, you have to enable SVM. To activate it, click on the MIT tab, then Advanced Frequency Settings and then Advanced Core settings. Even though the manual says it should be enabled by default, it wasn't on my board.