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From: Joerg Roedel <joro@8bytes.org>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <seanjc@google.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Jim Mattson <jmattson@google.com>,
Joerg Roedel <joro@8bytes.org>, x86@kernel.org,
Brijesh Singh <brijesh.singh@amd.com>,
Tom Lendacky <thomas.lendacky@amd.com>, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org, Joerg Roedel <jroedel@suse.de>
Subject: [PATCH v5 0/6] KVM: SVM: Add initial GHCB protocol version 2 support
Date: Wed, 20 Oct 2021 14:44:10 +0200
Message-Id: <20211020124416.24523-1-joro@8bytes.org>
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KVM: SVM: Add initial GHCB protocol version 2 support
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From: Joerg Roedel <jroedel@suse.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 are required: - MSR-based AP-reset-hold - MSR-based HV-feature-request These calls are implemented 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. The previous version can be found here: https://lore.kernel.org/lkml/20210929155330.5597-1-joro@8bytes.org/ Regards, Joerg Changes v4->v5: - Removed stable SoB from patch 1 - Moved kvm_emulate_ap_reset_hold() and all related code in later patches to SVM specific code, as suggested by Sean. Brijesh Singh (2): KVM: SVM: Add support for Hypervisor Feature support MSR protocol KVM: SVM: Increase supported GHCB protocol version Joerg Roedel (2): KVM: SVM: Get rid of set_ghcb_msr() and *ghcb_msr_bits() functions KVM: SVM: Move kvm_emulate_ap_reset_hold() to AMD specific code Sean Christopherson (1): KVM: SVM: Add helper to generate GHCB MSR verson info, and drop macro Tom Lendacky (1): KVM: SVM: Add support to handle AP reset MSR protocol arch/x86/include/asm/kvm_host.h | 3 +- arch/x86/include/asm/sev-common.h | 14 +-- arch/x86/include/uapi/asm/svm.h | 1 + arch/x86/kvm/svm/sev.c | 141 +++++++++++++++++++++--------- arch/x86/kvm/svm/svm.h | 13 +-- arch/x86/kvm/x86.c | 11 +-- 6 files changed, 120 insertions(+), 63 deletions(-) base-commit: 73f122c4f06f650ddf7f7410d8510db1a92a16a0