This serial adds the support for bus lock VM exit, which is a sub-feature of bus lock detection in KVM. The left part concerning bus lock debug exception support will be sent out once the kernel part is ready. The first patch applies Sean's refactor to vcpu_vmx.exit_reason at https://patchwork.kernel.org/patch/11500659 It is necessary as bus lock VM exit adds a new modifier bit(bit 26) in exit_reason field in VMCS. The second patch is the enabling work for bus lock VM exit. Document for Bus Lock VM exit is now available at the latest "Intel Architecture Instruction Set Extensions Programming Reference". Document Link: https://software.intel.com/content/www/us/en/develop/download/intel-architecture-instruction-set-extensions-programming-reference.html Chenyi Qiang (1): KVM: VMX: Enable bus lock VM exit Sean Christopherson (1): KVM: VMX: Convert vcpu_vmx.exit_reason to a union arch/x86/include/asm/kvm_host.h | 1 + arch/x86/include/asm/vmx.h | 1 + arch/x86/include/asm/vmxfeatures.h | 1 + arch/x86/include/uapi/asm/vmx.h | 4 +- arch/x86/kvm/vmx/nested.c | 42 ++++++++++------ arch/x86/kvm/vmx/vmx.c | 81 ++++++++++++++++++------------ arch/x86/kvm/vmx/vmx.h | 25 ++++++++- arch/x86/kvm/x86.c | 1 + 8 files changed, 107 insertions(+), 49 deletions(-) -- 2.17.1
