From: Joerg Roedel <jroedel@xxxxxxx> 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@xxxxxxxxxx/ 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
