Re: [tip: x86/seves] x86/kvm: Add KVM-specific VMMCALL handling under SEV-ES

From: Joerg Roedel
Date: Wed Oct 28 2020 - 17:53:57 EST


On Tue, Oct 27, 2020 at 04:14:15PM -0700, Erdem Aktas wrote:
> It seems to me that the kvm_sev_es_hcall_prepare is leaking more
> information than it is needed. Is this an expected behavior?

What exactly is leaked? The kvm hypercall uses RAX, RBX, RCX, RDX and
RSI for parameters.

Regards,

Joerg