leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
b045ae906b
linux/arch/x86/kvm/vmx
History
Oliver Upton b045ae906b kvm: nVMX: reflect MTF VM-exits if injected by L1 
According to SDM 26.6.2, it is possible to inject an MTF VM-exit via the
VM-entry interruption-information field regardless of the 'monitor trap
flag' VM-execution control. KVM appropriately copies the VM-entry
interruption-information field from vmcs12 to vmcs02. However, if L1
has not set the 'monitor trap flag' VM-execution control, KVM fails to
reflect the subsequent MTF VM-exit into L1.

Fix this by consulting the VM-entry interruption-information field of
vmcs12 to determine if L1 has injected the MTF VM-exit. If so, reflect
the exit, regardless of the 'monitor trap flag' VM-execution control.

Fixes: 5f3d45e7f2 ("kvm/x86: add support for MONITOR_TRAP_FLAG")
Signed-off-by: Oliver Upton <oupton@google.com>
Reviewed-by: Peter Shier <pshier@google.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Message-Id: <20200414224746.240324-1-oupton@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-04-15 12:08:35 -04:00
..
capabilities.h KVM: x86: Handle PKU CPUID adjustment in VMX code 2020-03-16 17:58:19 +01:00
evmcs.c x86/kvm/hyper-v: don't allow to turn on unsupported VMX controls for nested guests 2020-02-05 15:55:26 +01:00
evmcs.h KVM: nVMX: properly handle errors in nested_vmx_handle_enlightened_vmptrld() 2020-03-16 18:19:30 +01:00
nested.c kvm: nVMX: reflect MTF VM-exits if injected by L1 2020-04-15 12:08:35 -04:00
nested.h KVM: VMX: Configure runtime hooks using vmx_x86_ops 2020-03-31 10:48:06 -04:00
ops.h x86/kvm: fix a missing-prototypes "vmread_error" 2020-04-02 15:17:45 -04:00
pmu_intel.c KVM: VMX: Directly query Intel PT mode when refreshing PMUs 2020-03-16 17:58:38 +01:00
vmcs12.c
vmcs12.h KVM/arm updates for 5.3 2019-07-11 15:14:16 +02:00
vmcs_shadow_fields.h KVM: Fix some out-dated function names in comment 2020-01-21 13:57:27 +01:00
vmcs.h KVM: VMX: Leave preemption timer running when it's disabled 2019-06-18 17:10:46 +02:00
vmenter.S KVM: VMX: Remove unnecessary exception trampoline in vmx_vmenter 2020-04-07 04:21:20 -04:00
vmx.c KVM: VMX: Enable machine check support for 32bit targets 2020-04-14 04:22:10 -04:00
vmx.h ARM: 2020-04-02 15:13:15 -07:00