linux-kernel - [PATCH 0/3] kvm: svm: Add initial GHCB protocol version 2 support

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Message-Id: <20210713093546.7467-1-joro@8bytes.org>
Date:   Tue, 13 Jul 2021 11:35:43 +0200
From:   Joerg Roedel <joro@...tes.org>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Sean Christopherson <seanjc@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>,
        Brijesh Singh <brijesh.singh@....com>,
        Tom Lendacky <thomas.lendacky@....com>,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org, x86@...nel.org,
        Joerg Roedel <jroedel@...e.de>
Subject: [PATCH 0/3] kvm: svm: Add initial GHCB protocol version 2 support

From: Joerg Roedel <jroedel@...e.de>

Hi,

here is a small set of patches which I took from the pending SEV-SNP
patch-sets to enable basic support for GHCB protocol version 2.

When SEV-SNP is not supported, only two new MSR protocol VMGEXIT calls
need to be supported:

	- MSR-based AP-reset-hold
	- MSR-based HV-feature-request

These calls are implemented by here and then the protocol is lifted to
version 2.

This is submitted separately because the MSR-based AP-reset-hold call
is required to support kexec/kdump in SEV-ES guests.

Regards,

	Joerg

Brijesh Singh (2):
  KVM: SVM: Add support for Hypervisor Feature support MSR protocol
  KVM: SVM: Increase supported GHCB protocol version

Tom Lendacky (1):
  KVM: SVM: Add support to handle AP reset MSR protocol

 arch/x86/include/asm/sev-common.h |  5 +++
 arch/x86/include/uapi/asm/svm.h   |  1 +
 arch/x86/kvm/svm/sev.c            | 63 +++++++++++++++++++++++++++----
 arch/x86/kvm/svm/svm.h            |  4 +-
 4 files changed, 64 insertions(+), 9 deletions(-)


base-commit: e73f0f0ee7541171d89f2e2491130c7771ba58d3
-- 
2.31.1