From: Joerg Roedel <jroedel@xxxxxxx> 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 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/20210913141345.27175-1-joro@xxxxxxxxxx/ Regards, Joerg Changes v3->v4: - Rebased to kvm/queue - Addressed Sean's review comments on v3 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 set_ghcb_msr() and *ghcb_msr_bits() functions Sean Christopherson (1): KVM: SVM: Add helper to generate GHCB MSR version info, and drop macro 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/uapi/asm/svm.h | 1 + arch/x86/kvm/svm/sev.c | 131 ++++++++++++++++++++---------- arch/x86/kvm/svm/svm.h | 5 -- arch/x86/kvm/x86.c | 5 +- 6 files changed, 112 insertions(+), 54 deletions(-) base-commit: 8960bc57dfb78f5de088af800576d9096282dca2 -- 2.33.0
