Messages in this thread | | | From | 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 |
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From: Joerg Roedel <jroedel@suse.de>
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
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