[PATCH v3 0/2] KVM: MSR-based features

From: Tom Lendacky
Date: Wed Feb 21 2018 - 14:40:43 EST


The following series implements support within KVM for MSR-based features.
The first patch creates the MSR-based feature framework used to retrieve
the available MSR-based features. The second patch makes use of the
framework to allow a guest to determine if the LFENCE instruction is
serializing on AMD processors.

This series is based on the master branch of the KVM git tree.

https://git.kernel.org/pub/scm/virt/kvm/kvm.git

---

Changes from v2:
- Moved back to initializing the MSR-based feature list in kvm_init_msr_list()
(based on the kvm_x86_ops callback return code)
- Removed the definition of KVM_GET_MSR and switched back to using KVM_GET_MSRS
- Consolidated the documentation to group the ioctl usage and describe the usage
specific to the version of the ioctl used.

Tom Lendacky (2):
KVM: x86: Add a framework for supporting MSR-based features
KVM: SVM: Add MSR-based feature support for serializing LFENCE


Documentation/virtual/kvm/api.txt | 29 +++++++++++----
arch/x86/include/asm/kvm_host.h | 2 +
arch/x86/kvm/svm.c | 43 ++++++++++++++++++++++
arch/x86/kvm/x86.c | 72 +++++++++++++++++++++++++++++++++++--
include/uapi/linux/kvm.h | 1 +
5 files changed, 136 insertions(+), 11 deletions(-)

--
Tom Lendacky