linux-kernel - Re: [PATCH] x86/sev: Make SEV

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <Z9B_yS_d8ny9hYUX@example.org>
Date: Tue, 11 Mar 2025 19:24:09 +0100
From: Alexey Gladkov <legion@...nel.org>
To: Borislav Petkov <bp@...en8.de>
Cc: Jürgen Groß <jgross@...e.com>,
	Joerg Roedel <jroedel@...e.de>, Joerg Roedel <joro@...tes.org>,
	"Alexey Gladkov (Intel)" <alexey.gladkov@...el.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Dave Hansen <dave.hansen@...el.com>, Ingo Molnar <mingo@...nel.org>,
	x86@...nel.org, hpa@...or.com,
	Tom Lendacky <thomas.lendacky@....com>,
	Nikunj A Dadhania <nikunj@....com>, linux-kernel@...r.kernel.org,
	Larry.Dewey@....com
Subject: Re: [PATCH] x86/sev: Make SEV_STATUS available via SYSFS

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 ?

> 
> * ...
> 
> So yeah, I guess we can try this.

If the answers to both questions are yes. Then I have understood
everything correctly and I agree with it.

-- 
Rgrds, legion