From: Borislav Petkov <bp@suse.de>
To: Brijesh Singh <brijesh.singh@amd.com>
Cc: linux-kernel@vger.kernel.org, x86@kernel.org,
kvm@vger.kernel.org, "Thomas Gleixner" <tglx@linutronix.de>,
"Joerg Roedel" <joro@8bytes.org>,
"Michael S . Tsirkin" <mst@redhat.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Radim Krčmář" <rkrcmar@redhat.com>,
"Tom Lendacky" <thomas.lendacky@amd.com>
Subject: Re: [RFC Part2 PATCH v3 01/26] Documentation/virtual/kvm: Add AMD Secure Encrypted Virtualization (SEV)
Date: Wed, 6 Sep 2017 18:41:59 +0200 [thread overview]
Message-ID: <20170906164159.2ysrftypnx2ameqp@pd.tnic> (raw)
In-Reply-To: <ebc5e242-6ef5-f4bd-87db-a1ae551d9945@amd.com>
On Tue, Sep 05, 2017 at 04:39:14PM -0500, Brijesh Singh wrote:
> Not sure if we need to document the complete measurement flow in the
> driver doc.
No, not the whole thing - only summarized in a couple of sentences with
the link to the doc.
> I was trying to keep everything to 80 column limit but if that is
> not an issue for documentation then I like your recommendation.
That rule is not a hard one - rather, it is to human discretion what
is better - readability or fitting on some small screen, no one uses
anymore.
> The command does not require explicit parameter to differentiate between
> live migration vs snapshot. All it needs is a destination platform
> PDH key. If its live migration case then VM management stack will probably
> communicate with remote platform and get its PDH keys before calling us.
> The KVM driver simply acts upon the request from the userspace. SEV firmware
> spec Appendix A [1] provides complete flow diagram which need to be implemented
> in userspace. The driver simply act upon when it asked to create SEND_START
> context.
Ok, so that only creates the context after sending the PDH cert into the
firmware. So please state that first and then what the command can be
used for. The way it is written now, it reads like it does the sending
of the guest.
Thx.
--
Regards/Gruss,
Boris.
SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
--
next prev parent reply other threads:[~2017-09-06 16:42 UTC|newest]
Thread overview: 89+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-24 20:02 [RFC Part2 PATCH v3 00/26] x86: Secure Encrypted Virtualization (AMD) Brijesh Singh
2017-07-24 20:02 ` [RFC Part2 PATCH v3 01/26] Documentation/virtual/kvm: Add AMD Secure Encrypted Virtualization (SEV) Brijesh Singh
2017-09-05 17:21 ` Borislav Petkov
2017-09-05 21:39 ` Brijesh Singh
2017-09-05 22:06 ` Borislav Petkov
2017-09-06 16:41 ` Borislav Petkov [this message]
2017-09-06 20:54 ` Brijesh Singh
2017-07-24 20:02 ` [RFC Part2 PATCH v3 02/26] crypto: ccp: Add Platform Security Processor (PSP) device support Brijesh Singh
2017-07-25 8:29 ` Kamil Konieczny
2017-07-25 15:00 ` Brijesh Singh
2017-09-06 17:00 ` Borislav Petkov
2017-09-06 20:38 ` Brijesh Singh
2017-09-06 20:46 ` Borislav Petkov
2017-09-06 21:26 ` Gary R Hook
2017-09-07 10:34 ` Borislav Petkov
2017-09-07 14:27 ` Borislav Petkov
2017-09-07 22:19 ` Brijesh Singh
2017-09-07 23:15 ` Gary R Hook
2017-09-08 8:22 ` Borislav Petkov
2017-09-08 8:40 ` Borislav Petkov
2017-09-08 13:54 ` Brijesh Singh
2017-09-08 16:06 ` Brijesh Singh
2017-07-24 20:02 ` [RFC Part2 PATCH v3 03/26] crypto: ccp: Add Secure Encrypted Virtualization (SEV) " Brijesh Singh
2017-09-12 14:02 ` Borislav Petkov
2017-09-12 15:32 ` Brijesh Singh
2017-09-12 16:29 ` Borislav Petkov
2017-09-13 14:17 ` Borislav Petkov
2017-09-13 15:18 ` Brijesh Singh
2017-07-24 20:02 ` [RFC Part2 PATCH v3 04/26] KVM: SVM: Prepare to reserve asid for SEV guest Brijesh Singh
2017-09-12 19:54 ` Borislav Petkov
2017-07-24 20:02 ` [RFC Part2 PATCH v3 05/26] KVM: SVM: Reserve ASID range " Brijesh Singh
2017-09-12 20:04 ` Borislav Petkov
2017-09-12 20:24 ` Brijesh Singh
2017-09-12 20:28 ` Borislav Petkov
2017-07-24 20:02 ` [RFC Part2 PATCH v3 06/26] KVM: SVM: Prepare for new bit definition in nested_ctl Brijesh Singh
2017-09-12 20:06 ` Borislav Petkov
2017-07-24 20:02 ` [RFC Part2 PATCH v3 07/26] KVM: SVM: Add SEV feature definitions to KVM Brijesh Singh
2017-09-12 20:08 ` Borislav Petkov
2017-07-24 20:02 ` [RFC Part2 PATCH v3 08/26] KVM: X86: Extend CPUID range to include new leaf Brijesh Singh
2017-09-12 20:12 ` Borislav Petkov
2017-07-24 20:02 ` [RFC Part2 PATCH v3 09/26] KVM: Introduce KVM_MEMORY_ENCRYPT_OP ioctl Brijesh Singh
2017-09-12 20:19 ` Borislav Petkov
2017-07-24 20:02 ` [RFC Part2 PATCH v3 10/26] KVM: Introduce KVM_MEMORY_ENCRYPT_REGISTER/UNREGISTER_RAM ioctl Brijesh Singh
2017-09-12 20:29 ` Borislav Petkov
2017-09-12 20:50 ` Brijesh Singh
2017-09-12 21:08 ` Borislav Petkov
2017-07-24 20:02 ` [RFC Part2 PATCH v3 11/26] KVM: X86: Extend struct kvm_arch to include SEV information Brijesh Singh
2017-09-13 13:37 ` Borislav Petkov
2017-09-13 15:14 ` Brijesh Singh
2017-09-13 15:21 ` Borislav Petkov
2017-07-24 20:02 ` [RFC Part2 PATCH v3 12/26] KVM: Define SEV key management command id Brijesh Singh
2017-09-13 13:45 ` Borislav Petkov
2017-07-24 20:02 ` [RFC Part2 PATCH v3 13/26] KVM: SVM: Add KVM_SEV_INIT command Brijesh Singh
2017-09-13 15:06 ` Borislav Petkov
2017-09-13 16:23 ` Brijesh Singh
2017-09-13 16:37 ` Borislav Petkov
2017-07-24 20:02 ` [RFC Part2 PATCH v3 14/26] KVM: SVM: VMRUN should use assosiated ASID when SEV is enabled Brijesh Singh
2017-09-13 15:37 ` Borislav Petkov
2017-07-24 20:02 ` [RFC Part2 PATCH v3 15/26] KVM: SVM: Add support for SEV LAUNCH_START command Brijesh Singh
2017-09-13 17:25 ` Borislav Petkov
2017-09-13 18:23 ` Brijesh Singh
2017-09-13 18:37 ` Borislav Petkov
2017-09-13 18:58 ` Brijesh Singh
2017-09-13 21:02 ` Borislav Petkov
2017-07-24 20:02 ` [RFC Part2 PATCH v3 16/26] KVM: SVM: Add support for SEV LAUNCH_UPDATE_DATA command Brijesh Singh
2017-09-13 17:55 ` Borislav Petkov
2017-09-13 19:45 ` Brijesh Singh
2017-09-13 21:07 ` Borislav Petkov
2017-07-24 20:02 ` [RFC Part2 PATCH v3 17/26] KVM: SVM: Add support for SEV LAUNCH_MEASURE command Brijesh Singh
2017-09-14 10:20 ` Borislav Petkov
2017-07-24 20:02 ` [RFC Part2 PATCH v3 18/26] KVM: SVM: Add support for SEV LAUNCH_FINISH command Brijesh Singh
2017-09-14 10:24 ` Borislav Petkov
2017-07-24 20:02 ` [RFC Part2 PATCH v3 19/26] KVM: svm: Add support for SEV GUEST_STATUS command Brijesh Singh
2017-09-14 10:35 ` Borislav Petkov
2017-09-14 11:25 ` Brijesh Singh
2017-07-24 20:02 ` [RFC Part2 PATCH v3 20/26] KVM: SVM: Add support for SEV DEBUG_DECRYPT command Brijesh Singh
2017-09-14 11:08 ` Borislav Petkov
2017-07-24 20:02 ` [RFC Part2 PATCH v3 21/26] KVM: SVM: Add support for SEV DEBUG_ENCRYPT command Brijesh Singh
2017-09-14 13:32 ` Borislav Petkov
2017-07-24 20:02 ` [RFC Part2 PATCH v3 22/26] KVM: SVM: Pin guest memory when SEV is active Brijesh Singh
2017-09-14 14:00 ` Borislav Petkov
2017-07-24 20:03 ` [RFC Part2 PATCH v3 23/26] KVM: X86: Add memory encryption enabled ops Brijesh Singh
2017-09-14 14:09 ` Borislav Petkov
2017-07-24 20:03 ` [RFC Part2 PATCH v3 24/26] KVM: SVM: Clear C-bit from the page fault address Brijesh Singh
2017-09-14 14:35 ` Borislav Petkov
2017-07-24 20:03 ` [RFC Part2 PATCH v3 25/26] KVM: SVM: Do not install #UD intercept when SEV is enabled Brijesh Singh
2017-09-14 14:56 ` Borislav Petkov
2017-07-24 20:03 ` [RFC Part2 PATCH v3 26/26] KVM: X86: Restart the guest when insn_len is zero and " Brijesh Singh
2017-09-14 15:40 ` Borislav Petkov
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