KVM: nVMX: Flush linear and combined mappings on VPID02 related flushes

All VPID12s used on a given L1 vCPU is translated to a single
VPID02 (vmx->nested.vpid02 or vmx->vpid). Therefore, on L1->L2 VMEntry,
we need to invalidate linear and combined mappings tagged by
VPID02 in case L1 uses VPID and vmcs12->vpid was changed since
last L1->L2 VMEntry.

However, current code invalidates the wrong mappings as it calls
__vmx_flush_tlb() with invalidate_gpa parameter set to true which will
result in invalidating combined and guest-physical mappings tagged with
active EPTP which is EPTP01.

Similarly, INVVPID emulation have the exact same issue.

Fix both issues by just setting invalidate_gpa parameter to false which
will result in invalidating linear and combined mappings tagged with
given VPID02 as required.

Reviewed-by: Nikita Leshenko <nikita.leshchenko@oracle.com>
Reviewed-by: Mark Kanda <mark.kanda@oracle.com>
Signed-off-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 12d39e2..9752f07 100644 (file)
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -9074,7 +9074,7 @@ static int handle_invvpid(struct kvm_vcpu *vcpu)
                        __invvpid(VMX_VPID_EXTENT_INDIVIDUAL_ADDR,
                                vpid02, operand.gla);
                } else
-                       __vmx_flush_tlb(vcpu, vpid02, true);
+                       __vmx_flush_tlb(vcpu, vpid02, false);
                break;
        case VMX_VPID_EXTENT_SINGLE_CONTEXT:
        case VMX_VPID_EXTENT_SINGLE_NON_GLOBAL:
@@ -9083,10 +9083,10 @@ static int handle_invvpid(struct kvm_vcpu *vcpu)
                                VMXERR_INVALID_OPERAND_TO_INVEPT_INVVPID);
                        return kvm_skip_emulated_instruction(vcpu);
                }
-               __vmx_flush_tlb(vcpu, vpid02, true);
+               __vmx_flush_tlb(vcpu, vpid02, false);
                break;
        case VMX_VPID_EXTENT_ALL_CONTEXT:
-               __vmx_flush_tlb(vcpu, vpid02, true);
+               __vmx_flush_tlb(vcpu, vpid02, false);
                break;
        default:
                WARN_ON_ONCE(1);
@@ -12295,7 +12295,7 @@ static int prepare_vmcs02(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12,
                if (nested_cpu_has_vpid(vmcs12) && vmx->nested.vpid02) {
                        if (vmcs12->virtual_processor_id != vmx->nested.last_vpid) {
                                vmx->nested.last_vpid = vmcs12->virtual_processor_id;
-                               __vmx_flush_tlb(vcpu, vmx->nested.vpid02, true);
+                               __vmx_flush_tlb(vcpu, vmx->nested.vpid02, false);
                        }
                } else {
                        /*