Re: [PATCH] x86/sev: Make SEV_STATUS available via SYSFS

Joerg Roedel
2025-03-11T18:40:18Z

On Tue, Mar 11, 2025 at 07:24:09PM +0100, Alexey Gladkov wrote:
> On Tue, Mar 11, 2025 at 12:07:48PM +0100, Borislav Petkov wrote:
> > On Tue, Mar 11, 2025 at 11:22:23AM +0100, Jürgen Groß wrote:
> > > I can live with that, as long as we make it possible to make e.g.
> > > /sys/guest/xen a link to /sys/hypervisor (if xen is the hypervisor
> > > the guest is directly running on). This means that /sys/guest/*/type
> > > should not conflict with /sys/hypervisor/type.
> >
> > Yeah, so Joerg and I came up with this on IRC:
> >
> > /sys/hypervisor/{sev,tdx}
>
> This directory is for guest-side information, right ?
>
> >
> > * It should not disturb the current hierarchy there
> >
> > * No need for a new hierarchy like /sys/guest - we haz enough and besides,
> > /sys/hypervisor sounds like the right place already
>
> The /sys/hypervisor is for host-side information ?

No, all under /sys/hypervisor is for guest-side information. There is
not directory for host-side information yet. The question is whether a
directory in SYSFS is needed, or whether there are other means to expose
the same information.

Regards,

--
Jörg Rödel
jroedel@suse.de

SUSE Software Solutions Germany GmbH
Frankenstraße 146
90461 Nürnberg
Germany
https://www.suse.com/

Geschäftsführer: Ivo Totev, Andrew McDonald, Werner Knoblich
(HRB 36809, AG Nürnberg)