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

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Message-ID: <5f4ae919-6283-43f4-b8fb-8ff43d1de645@suse.com>
Date: Tue, 11 Mar 2025 12:14:27 +0100
From: Juergen Gross <jgross@...e.com>
To: Borislav Petkov <bp@...en8.de>
Cc: Joerg Roedel <jroedel@...e.de>, Alexey Gladkov <legion@...nel.org>,
 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 11.03.25 12:07, 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}
> 
> * 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
> 
> * ...
> 
> So yeah, I guess we can try this.

Full ack for this plan.

Juergen

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