On 18/06/19 17:48, Dr. David Alan Gilbert wrote: >> Currently, KVM folks (including myself), haven’t decided yet to expose vmcs12 struct layout to userspace but instead to still leave it opaque. >> The formal size of this size is VMCS12_SIZE (defined in kernel as 0x1000). I was wondering if we wish to expose VMCS12_SIZE constant to userspace or not. >> So currently I defined these __u8 arrays as 0x1000. But in case Paolo agrees to expose VMCS12_SIZE, we can use that instead. > Well if it's not defined it's bound to change at some state! > Also, do we need to clear it before we get it from the kernel - e.g. > is the kernel guaranteed to give us 0x1000 ? It is defined, it is the size of data.vmx[0].vmx12. We can define it. Paolo
