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KVM: nVMX: Allow to disable VM_{ENTRY_LOAD,EXIT_SAVE}_DEBUG_CONTROLS
authorJan Kiszka <jan.kiszka@siemens.com>
Mon, 16 Jun 2014 11:59:43 +0000 (13:59 +0200)
committerPaolo Bonzini <pbonzini@redhat.com>
Thu, 19 Jun 2014 10:52:13 +0000 (12:52 +0200)
commit6a56a8e8117984ebbe04ce2a41ddf36f132f7d38
tree4190e1c208c3ab89c585524c91d688feb670de8atree | snapshot
parentd10be043088625ed12bf9713889281bf8fda46dacommit | diff
KVM: nVMX: Allow to disable VM_{ENTRY_LOAD,EXIT_SAVE}_DEBUG_CONTROLS

Allow L1 to "leak" its debug controls into L2, i.e. permit cleared
VM_{ENTRY_LOAD,EXIT_SAVE}_DEBUG_CONTROLS. This requires to manually
transfer the state of DR7 and IA32_DEBUGCTLMSR from L1 into L2 as both
run on different VMCS.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
arch/x86/kvm/vmx.c diff | blob | history
Linux Kernel Source Tree.