Vitaly Kuznetsov 11e349143e x86/kvm/nVMX: fix VMCLEAR when Enlightened VMCS is in use ... When Enlightened VMCS is in use, it is valid to do VMCLEAR and, according to TLFS, this should "transition an enlightened VMCS from the active to the non-active state". It is, however, wrong to assume that it is only valid to do VMCLEAR for the eVMCS which is currently active on the vCPU performing VMCLEAR. Currently, the logic in handle_vmclear() is broken: in case, there is no active eVMCS on the vCPU doing VMCLEAR we treat the argument as a 'normal' VMCS and kvm_vcpu_write_guest() to the 'launch_state' field irreversibly corrupts the memory area. So, in case the VMCLEAR argument is not the current active eVMCS on the vCPU, how can we know if the area it is pointing to is a normal or an enlightened VMCS? Thanks to the bug in Hyper-V (see commit 72aeb60c52 ("KVM: nVMX: Verify eVMCS revision id match supported eVMCS version on eVMCS VMPTRLD")) we can not, the revision can't be used to distinguish between them. So let's assume it is always enlightened in case enlightened vmentry is enabled in the assist page. Also, check if vmx->nested.enlightened_vmcs_enabled to minimize the impact for 'unenlightened' workloads. Fixes: b8bbab928f ("KVM: nVMX: implement enlightened VMPTRLD and VMCLEAR") Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2019-07-02 18:56:00 +02:00
..
capabilities.h	KVM: VMX: Include architectural defs header in capabilities.h	2019-04-30 21:32:21 +02:00
evmcs.c	x86/kvm/nVMX: fix VMCLEAR when Enlightened VMCS is in use	2019-07-02 18:56:00 +02:00
evmcs.h	x86/kvm/nVMX: fix VMCLEAR when Enlightened VMCS is in use	2019-07-02 18:56:00 +02:00
nested.c	x86/kvm/nVMX: fix VMCLEAR when Enlightened VMCS is in use	2019-07-02 18:56:00 +02:00
nested.h	KVM: nVMX: Use descriptive names for VMCS sync functions and flags	2019-06-18 11:46:06 +02:00
ops.h	KVM: VMX: remove unneeded 'asm volatile ("")' from vmcs_write64	2019-06-05 14:14:49 +02:00
pmu_intel.c	KVM: x86/pmu: do not mask the value that is written to fixed PMUs	2019-05-24 21:27:14 +02:00
vmcs12.c	KVM: nVMX: Move vmcs12 code to dedicated files	2018-12-14 12:34:30 +01:00
vmcs12.h	KVM: nVMX: Track vmcs12 offsets for shadowed VMCS fields	2019-06-18 11:46:05 +02:00
vmcs_shadow_fields.h	KVM: nVMX: shadow pin based execution controls	2019-06-18 17:10:50 +02:00
vmcs.h	KVM: VMX: Leave preemption timer running when it's disabled	2019-06-18 17:10:46 +02:00
vmenter.S	KVM: VMX: Move RSB stuffing to before the first RET after VM-Exit	2019-04-27 09:48:52 +02:00
vmx.c	KVM: nVMX: list VMX MSRs in KVM_GET_MSR_INDEX_LIST	2019-07-02 17:36:18 +02:00
vmx.h	KVM: VMX: Explicitly initialize controls shadow at VMCS allocation	2019-06-18 11:47:44 +02:00