From: "Jörg Rödel" <jroedel@suse.de>
To: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: James Bottomley <jejb@linux.ibm.com>,
amd-sev-snp@lists.suse.com, linux-coco@lists.linux.dev,
kvm@vger.kernel.org
Subject: Re: [ANNOUNCEMENT] COCONUT Secure VM Service Module for SEV-SNP
Date: Tue, 21 Mar 2023 19:50:13 +0100 [thread overview]
Message-ID: <ZBn8ZdEBbvPMXJt2@suse.de> (raw)
In-Reply-To: <ZBnt9pbSfp/v1bWO@work-vm>
On Tue, Mar 21, 2023 at 05:48:38PM +0000, Dr. David Alan Gilbert wrote:
> I'm curious why you're doing isolation using ring-3 stuff rather than
> another VMPL level?
Two reasons:
1) CPL switch is much cheaper than VMPL switch
2) CPLs allow to isolate different services within the same VMPL. Having
services run at, say, VMPL1 on CPL-0 will allow all services on VMPL1
to access each others memory.
Regards,
--
Jörg Rödel
jroedel@suse.de
SUSE Software Solutions Germany GmbH
Frankenstraße 146
90461 Nürnberg
Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
next prev parent reply other threads:[~2023-03-21 18:50 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-21 9:29 [ANNOUNCEMENT] COCONUT Secure VM Service Module for SEV-SNP Jörg Rödel
2023-03-21 11:09 ` James Bottomley
2023-03-21 12:43 ` Jörg Rödel
2023-03-21 13:43 ` James Bottomley
2023-03-21 15:14 ` Jörg Rödel
2023-03-21 17:48 ` Dr. David Alan Gilbert
2023-03-21 18:50 ` Jörg Rödel [this message]
2023-03-21 20:05 ` James Bottomley
2023-03-22 1:29 ` Marc Orr
2023-03-22 17:57 ` Daniel P. Berrangé
2023-03-22 9:15 ` Jörg Rödel
2023-03-22 18:07 ` Daniel P. Berrangé
2023-03-22 18:24 ` Dionna Amalie Glaze
2023-03-21 15:06 ` Dr. David Alan Gilbert
2023-03-21 15:25 ` Jörg Rödel
2023-03-21 16:56 ` Dr. David Alan Gilbert
2023-03-21 19:03 ` Jörg Rödel
2023-03-21 19:53 ` Dr. David Alan Gilbert
2023-03-22 9:19 ` Jörg Rödel
2023-03-22 9:43 ` Alexander Graf
2023-03-22 10:34 ` Dr. David Alan Gilbert
2023-03-22 17:37 ` Dionna Amalie Glaze
2023-03-22 17:47 ` Dr. David Alan Gilbert
2023-03-22 21:53 ` James Bottomley
2023-04-11 19:57 ` Tom Lendacky
2023-04-11 20:01 ` Dionna Amalie Glaze
2023-04-13 16:57 ` James Bottomley
2023-04-14 9:00 ` Jörg Rödel
2023-05-02 23:03 ` Tom Lendacky
2023-05-03 12:26 ` Jörg Rödel
2023-05-03 15:24 ` Dionna Amalie Glaze
2023-05-03 15:43 ` James Bottomley
2023-05-03 16:10 ` Daniel P. Berrangé
2023-05-03 16:51 ` Claudio Carvalho
2023-05-03 17:16 ` Alexander Graf
2023-05-05 15:34 ` Jörg Rödel
2023-05-05 15:47 ` Daniel P. Berrangé
2023-05-04 17:04 ` James Bottomley
2023-05-05 12:35 ` Christophe de Dinechin
2023-05-06 12:48 ` James Bottomley
2023-05-08 5:16 ` Alexander Graf
2023-05-05 15:02 ` Jörg Rödel
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