From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8719CC433EF for ; Tue, 25 Jan 2022 14:20:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1578086AbiAYOT7 (ORCPT ); Tue, 25 Jan 2022 09:19:59 -0500 Received: from 8bytes.org ([81.169.241.247]:46252 "EHLO theia.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1452451AbiAYOQs (ORCPT ); Tue, 25 Jan 2022 09:16:48 -0500 Received: from cap.home.8bytes.org (p549ad610.dip0.t-ipconnect.de [84.154.214.16]) (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 D4108106; Tue, 25 Jan 2022 15:16:31 +0100 (CET) From: Joerg Roedel To: Paolo Bonzini Cc: Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , x86@kernel.org, Brijesh Singh , Tom Lendacky , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Joerg Roedel Subject: [PATCH v6 0/7] KVM: SVM: Add initial GHCB protocol version 2 support Date: Tue, 25 Jan 2022 15:16:19 +0100 Message-Id: <20220125141626.16008-1-joro@8bytes.org> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Joerg Roedel Hi, here is a small set of patches which I originally took from the pending SEV-SNP patch-sets to enable basic support for GHCB protocol version 2. Meanwhile a couple of other patches from Sean Christopherson have been added. 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/kvm/20211020124416.24523-1-joro@8bytes.org/ Regards, Joerg Changes v5->v6: - Rebased to v5.17-rc1 - Added changes requested by Sean Christopherson 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 (2): KVM: SVM: Add helper to generate GHCB MSR verson info, and drop macro KVM: SVM: Set "released" on INIT-SIPI iff SEV-ES vCPU was in AP reset hold Tom Lendacky (1): KVM: SVM: Add support to handle AP reset MSR protocol arch/x86/include/asm/kvm_host.h | 2 +- arch/x86/include/asm/sev-common.h | 18 ++-- arch/x86/include/uapi/asm/svm.h | 1 + arch/x86/kvm/svm/sev.c | 169 ++++++++++++++++++++---------- arch/x86/kvm/svm/svm.c | 13 ++- arch/x86/kvm/svm/svm.h | 10 +- arch/x86/kvm/x86.c | 12 +-- 7 files changed, 137 insertions(+), 88 deletions(-) base-commit: e783362eb54cd99b2cac8b3a9aeac942e6f6ac07 -- 2.34.1