From: Brijesh Singh <brijesh.singh@amd.com>
To: Dov Murik <dovmurik@linux.ibm.com>, qemu-devel@nongnu.org
Cc: brijesh.singh@amd.com, "Connor Kuehl" <ckuehl@redhat.com>,
"Philippe Mathieu-Daudé" <philmd@redhat.com>,
"Michael S . Tsirkin" <mst@redhat.com>,
"James Bottomley" <jejb@linux.ibm.com>,
"Dr . David Alan Gilbert" <dgilbert@redhat.com>,
"Tom Lendacky" <thomas.lendacky@amd.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"David Gibson" <david@gibson.dropbear.id.au>,
"Daniel P. Berrangé" <berrange@redhat.com>,
kvm@vger.kernel.org, "Michael Roth" <michael.roth@amd.com>,
"Eduardo Habkost" <ehabkost@redhat.com>
Subject: Re: [RFC PATCH 3/6] i386/sev: initialize SNP context
Date: Thu, 15 Jul 2021 08:24:25 -0500 [thread overview]
Message-ID: <4de32b0f-d4f7-33a8-3678-dca68cc8bfca@amd.com> (raw)
In-Reply-To: <34b8bda5-9b4d-c1e0-0009-1a407a48dd4a@linux.ibm.com>
On 7/15/21 4:32 AM, Dov Murik wrote:
>
> Just making sure I understand:
>
> * sev_enabled() returns true for SEV or newer (SEV or SEV-ES or
> SEV-SNP).
> * sev_es_enabled() returns true for SEV-ES or newer (SEV-ES or SEV-SNP).
> * sev_snp_enabled() returns true for SEV-SNP or newer (currently only
> SEV-SNP).
>
> Is that indeed the intention?
>
Yes. The SEV-SNP support requires the SEV and SEV-ES to be enabled. See
the text from the APM vol2 section 15.36.
The SEV-SNP features enable additional protection for encrypted
VMs designed to achieve stronger isolation from the hypervisor.
SEV-SNP is used with the SEV and SEV-ES features described in
Section 15.34 and Section 15.35 respectively and requires the
enablement and use of these features.
thanks
next prev parent reply other threads:[~2021-07-15 13:24 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-09 21:55 [RFC PATCH 0/6] Add AMD Secure Nested Paging (SEV-SNP) support Brijesh Singh
2021-07-09 21:55 ` [RFC PATCH 1/6] linux-header: add the SNP specific command Brijesh Singh
2021-07-10 20:32 ` Michael S. Tsirkin
2021-07-10 20:32 ` Michael S. Tsirkin
2021-07-12 15:48 ` Brijesh Singh
2021-07-19 11:35 ` Dov Murik
2021-07-19 11:35 ` Dov Murik
2021-07-19 14:40 ` Brijesh Singh
2021-07-09 21:55 ` [RFC PATCH 2/6] i386/sev: extend sev-guest property to include SEV-SNP Brijesh Singh
2021-07-12 6:09 ` Dov Murik
2021-07-12 6:09 ` Dov Murik
2021-07-12 14:34 ` Dr. David Alan Gilbert
2021-07-12 14:34 ` Dr. David Alan Gilbert
2021-07-12 15:59 ` Brijesh Singh
2021-07-12 16:16 ` Dr. David Alan Gilbert
2021-07-12 16:16 ` Dr. David Alan Gilbert
2021-07-12 14:43 ` Daniel P. Berrangé
2021-07-12 14:43 ` Daniel P. Berrangé
2021-07-12 15:56 ` Brijesh Singh
2021-07-12 16:24 ` Daniel P. Berrangé
2021-07-12 16:24 ` Daniel P. Berrangé
2021-07-13 13:54 ` Brijesh Singh
2021-07-13 13:46 ` Markus Armbruster
2021-07-14 14:18 ` Brijesh Singh
2021-07-20 19:42 ` Michael Roth
2021-07-20 21:54 ` Daniel P. Berrangé
2021-07-20 21:54 ` Daniel P. Berrangé
2021-07-21 13:08 ` Markus Armbruster
2021-07-22 0:02 ` Michael Roth
2021-07-22 0:02 ` Michael Roth via
2021-07-13 18:21 ` Eric Blake
2021-07-13 18:21 ` Eric Blake
2021-07-09 21:55 ` [RFC PATCH 3/6] i386/sev: initialize SNP context Brijesh Singh
2021-07-15 9:32 ` Dov Murik
2021-07-15 9:32 ` Dov Murik
2021-07-15 13:24 ` Brijesh Singh [this message]
2021-07-09 21:55 ` [RFC PATCH 4/6] i386/sev: add the SNP launch start context Brijesh Singh
2021-07-19 12:34 ` Dov Murik
2021-07-19 12:34 ` Dov Murik
2021-07-19 15:27 ` Brijesh Singh
2021-07-09 21:55 ` [RFC PATCH 5/6] i386/sev: add support to encrypt BIOS when SEV-SNP is enabled Brijesh Singh
2021-07-14 17:08 ` Connor Kuehl
2021-07-14 17:08 ` Connor Kuehl
2021-07-14 18:52 ` Brijesh Singh
2021-07-15 5:54 ` Dov Murik
2021-07-15 5:54 ` Dov Murik
2021-07-19 13:00 ` Dov Murik
2021-07-19 13:00 ` Dov Murik
2021-07-09 21:55 ` [RFC PATCH 6/6] i386/sev: populate secrets and cpuid page and finalize the SNP launch Brijesh Singh
2021-07-14 17:29 ` Dr. David Alan Gilbert
2021-07-14 17:29 ` Dr. David Alan Gilbert
2021-07-14 18:53 ` Brijesh Singh
2021-07-19 11:24 ` Dov Murik
2021-07-19 11:24 ` Dov Murik
2021-07-19 14:45 ` Brijesh Singh
2021-07-12 17:00 ` [RFC PATCH 0/6] Add AMD Secure Nested Paging (SEV-SNP) support Tom Lendacky
2021-07-13 8:05 ` Dov Murik
2021-07-13 8:05 ` Dov Murik
2021-07-13 8:31 ` Dr. David Alan Gilbert
2021-07-13 8:31 ` Dr. David Alan Gilbert
2021-07-13 13:57 ` Brijesh Singh
2021-07-13 14:01 ` Brijesh Singh
2021-07-14 9:52 ` Dr. David Alan Gilbert
2021-07-14 9:52 ` Dr. David Alan Gilbert
2021-07-14 14:23 ` Brijesh Singh
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