From: Dov Murik <dovmurik@linux.ibm.com>
To: Brijesh Singh <brijesh.singh@amd.com>, qemu-devel@nongnu.org
Cc: "Tom Lendacky" <thomas.lendacky@amd.com>,
"Daniel P. Berrangé" <berrange@redhat.com>,
"Eduardo Habkost" <ehabkost@redhat.com>,
kvm@vger.kernel.org, "Michael S . Tsirkin" <mst@redhat.com>,
"Connor Kuehl" <ckuehl@redhat.com>,
"Michael Roth" <michael.roth@amd.com>,
"James Bottomley" <jejb@linux.ibm.com>,
"Dr . David Alan Gilbert" <dgilbert@redhat.com>,
"Dov Murik" <dovmurik@linux.ibm.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Philippe Mathieu-Daudé" <philmd@redhat.com>,
"David Gibson" <david@gibson.dropbear.id.au>
Subject: Re: [RFC PATCH 0/6] Add AMD Secure Nested Paging (SEV-SNP) support
Date: Tue, 13 Jul 2021 11:05:37 +0300 [thread overview]
Message-ID: <e68a9760-121f-72ee-f8ae-193b92bde403@linux.ibm.com> (raw)
In-Reply-To: <20210709215550.32496-1-brijesh.singh@amd.com>
Brijesh,
On 10/07/2021 0:55, Brijesh Singh wrote:
> SEV-SNP builds upon existing SEV and SEV-ES functionality while adding
> new hardware-based memory protections. SEV-SNP adds strong memory integrity
> protection to help prevent malicious hypervisor-based attacks like data
> replay, memory re-mapping and more in order to create an isolated memory
> encryption environment.
>
> The patches to support the SEV-SNP in Linux kernel and OVMF are available:
> https://lore.kernel.org/kvm/20210707181506.30489-1-brijesh.singh@amd.com/
> https://lore.kernel.org/kvm/20210707183616.5620-1-brijesh.singh@amd.com/
> https://edk2.groups.io/g/devel/message/77335?p=,,,20,0,0,0::Created,,posterid%3A5969970,20,2,20,83891508
>
> The Qemu patches uses the command id added by the SEV-SNP hypervisor
> patches to bootstrap the SEV-SNP VMs.
>
> TODO:
> * Add support to filter CPUID values through the PSP.
>
> Additional resources
> ---------------------
> SEV-SNP whitepaper
> https://www.amd.com/system/files/TechDocs/SEV-SNP-strengthening-vm-isolation-with-integrity-protection-and-more.pdf
>
> APM 2: https://www.amd.com/system/files/TechDocs/24593.pdf (section 15.36)
>
> GHCB spec:
> https://developer.amd.com/wp-content/resources/56421.pdf
>
> SEV-SNP firmware specification:
> https://www.amd.com/system/files/TechDocs/56860.pdf
>
> Brijesh Singh (6):
> linux-header: add the SNP specific command
> i386/sev: extend sev-guest property to include SEV-SNP
> i386/sev: initialize SNP context
> i386/sev: add the SNP launch start context
> i386/sev: add support to encrypt BIOS when SEV-SNP is enabled
> i386/sev: populate secrets and cpuid page and finalize the SNP launch
>
> docs/amd-memory-encryption.txt | 81 +++++-
> linux-headers/linux/kvm.h | 47 ++++
> qapi/qom.json | 6 +
> target/i386/sev.c | 498 ++++++++++++++++++++++++++++++++-
> target/i386/sev_i386.h | 1 +
> target/i386/trace-events | 4 +
> 6 files changed, 628 insertions(+), 9 deletions(-)
>
It might be useful to allow the user to view SNP-related status/settings
in HMP's `info sev` and QMP's qom-list/qom-get under
/machine/confidential-guest-support .
(Not sure whether HMP is deprecated and new stuff should not be added
there.)
Particularly confusing is the `policy` attribute which is only relevant
for SEV / SEV-ES, while there's a new `snp.policy` attribute for SNP...
Maybe the irrelevant attributes should not be added to the tree when not
in SNP.
-Dov
next prev parent reply other threads:[~2021-07-13 8:07 UTC|newest]
Thread overview: 45+ 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
2021-07-12 15:48 ` Brijesh Singh
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 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 14:43 ` Daniel P. Berrangé
2021-07-12 15:56 ` Brijesh Singh
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
2021-07-21 13:08 ` Markus Armbruster
2021-07-22 0:02 ` Michael Roth via
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 13:24 ` Brijesh Singh
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 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 18:52 ` Brijesh Singh
2021-07-15 5:54 ` 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 18:53 ` Brijesh Singh
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 [this message]
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 14:23 ` Brijesh Singh
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