Patch 1-3 are optimization and cleanup. Patch 4-7 are fixes for PT. Patch 4 and 5 fix the virtulazation of PT to provide architectual consistent behavior for guest. Patch 6 fix the case that malicious userspace can exploit PT to cause vm-entry failure or #GP in KVM. Patch 7 fix the potential MSR access #GP if some PT MSRs not available on hardware. Patch 3 and patch 7 are added in v2. Xiaoyao Li (7): KVM: VMX: Restore host's MSR_IA32_RTIT_CTL when it's not zero KVM: VMX: Use precomputed vmx->pt_desc.addr_range KVM: VMX: Rename pt_desc.addr_range to pt_desc.nr_addr_range KVM: VMX: RTIT_CTL_BRANCH_EN has no dependency on other CPUID bit KVM: VMX: Disallow PT MSRs accessing if PT is not exposed to guest KVM: VMX: Check Intel PT related CPUID leaves KVM: VMX: Only context switch some PT MSRs when they exist arch/x86/kvm/cpuid.c | 25 ++++++++++ arch/x86/kvm/vmx/vmx.c | 110 ++++++++++++++++++++++++++--------------- arch/x86/kvm/vmx/vmx.h | 2 +- 3 files changed, 95 insertions(+), 42 deletions(-) -- 2.27.0
