Re: [Qemu-devel] [PATCH] Reinstate cpuid vendor override when kvm is enabled

[Jamie Lokier]

Avi Kivity wrote:
> Due to upstream qemu changes we no longer expose the host cpu vendor id
> to the guest.  This leads to failures when the syscall/sysenter instructions
> are used in compatibility mode.
> 
> Change the default to override when kvm is enabled.

This is a good change, although it always bothers me when there has to
be a difference between kvm-enabled and kvm-disabled, because I run
some guests in both modes at different times.

Out of interest, are the guest-visible differences between kvm-enabled
mode and kvm-disabled mode documented somewhere?

Thanks,
-- Jamie