Re: Runtime Memory Validation in Intel-TDX and AMD-SNP
From: Joerg Roedel <joro@8bytes.org>
Date: 2021-07-26 18:55:30
Also in:
linux-coco
From: Joerg Roedel <joro@8bytes.org>
Date: 2021-07-26 18:55:30
Also in:
linux-coco
On Thu, Jul 22, 2021 at 10:31:27AM -0700, Marc Orr wrote:
IMHO, we need to be completely certain that guest data cannot be compromised if we're going to remove the requirement that guest memory only be validated once in a certain state (e.g., from within a crash kernel). Perhaps it is the case that we're certain that guest data cannot be compromised from within a crash kernel -- but it's not what I read in the email exchange.
Right, at least SNP has a strict requirement that no memory could be validated or invalidated twice without giving up security guarantees for that memory. Regards, Jörg