Re: [PATCH] KVM: x86: Expose Predictive Store Forwarding Disable

From: Borislav Petkov
Date: Mon Sep 27 2021 - 06:59:34 EST

On Thu, Sep 23, 2021 at 08:15:28PM -0500, Babu Moger wrote:
> Linux kernel does not have the interface to enable/disable PSFD yet. Plan
> here is to expose the PSFD technology to KVM so that the guest kernel can
> make use of it if they wish to.

Why should the guest kernel expose it if we said that for now we want to
disable it with the SSBD control?