From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from theia.8bytes.org (8bytes.org [81.169.241.247]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5922370 for ; Thu, 22 Jul 2021 11:52:55 +0000 (UTC) Received: from cap.home.8bytes.org (p4ff2b1ea.dip0.t-ipconnect.de [79.242.177.234]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by theia.8bytes.org (Postfix) with ESMTPSA id 9DE482E3; Thu, 22 Jul 2021 13:52:52 +0200 (CEST) From: Joerg Roedel To: Paolo Bonzini Cc: Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , Brijesh Singh , Tom Lendacky , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-coco@lists.linux.dev, Joerg Roedel Subject: [PATCH v2 0/4] KVM: SVM: Add initial GHCB protocol version 2 support Date: Thu, 22 Jul 2021 13:52:41 +0200 Message-Id: <20210722115245.16084-1-joro@8bytes.org> X-Mailer: git-send-email 2.31.1 Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Joerg Roedel 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 Changes v1->v2: - Rebased to v5.14-rc2 - Addressed Sean's review comments from the SNP patch-set. Brijesh Singh (2): KVM: SVM: Add support for Hypervisor Feature support MSR protocol KVM: SVM: Increase supported GHCB protocol version Joerg Roedel (1): KVM: SVM: Get rid of *ghcb_msr_bits() functions Tom Lendacky (1): KVM: SVM: Add support to handle AP reset MSR protocol arch/x86/include/asm/kvm_host.h | 10 ++- arch/x86/include/asm/sev-common.h | 14 ++++ arch/x86/include/asm/svm.h | 1 - arch/x86/include/uapi/asm/svm.h | 1 + arch/x86/kvm/svm/sev.c | 107 ++++++++++++++++++++---------- arch/x86/kvm/svm/svm.h | 3 +- arch/x86/kvm/x86.c | 5 +- 7 files changed, 103 insertions(+), 38 deletions(-) base-commit: 2734d6c1b1a089fb593ef6a23d4b70903526fe0c -- 2.31.1