On Thu, 25 May 2023 at 02:03, Arnd Bergmann <arnd@xxxxxxxx> wrote: > > On Wed, May 24, 2023, at 19:54, Peter Zijlstra wrote: > > On Wed, May 24, 2023 at 09:39:50PM +0530, Naresh Kamboju wrote: > >> FYI, > >> These are running in AWS cloud as qemu-i386 and qemu-x86_64. > > > > Are these hosted on x86 and using KVM or are they hosted on Graviton and > > using TCG x86 ? > > > > Supposedly TCG x86 is known 'funny' and if that's what you're using it > > would be very good to confirm the problem on x86 hardware. I see the following logs while booting. <3>[ 1.834686] kvm_intel: VMX not supported by CPU 0 <3>[ 1.835860] kvm_amd: SVM not supported by CPU 0, not amd or hygon And they are running on x86 machines. > > Even on x86 cloud instances you are likely to run with TCG if > the host does not support nested virtualization. So the question > really is what specific cloud instance type this was running > on, and if KVM was actually used or not. From what I could > find on the web, Amazon EC2 only supports KVM guests inside of > bare-metal instances but not any of the normal virtualized ones, > while other providers using KVM (Google, Microsoft, ...) do support > nested guests. > > Arnd
