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| author |   Sean Christopherson <sean.j.christopherson@intel.com> | 2020-04-28 16:10:24 -0700 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2020-05-15 12:26:16 -0400 |
| commit | 2408500dfc8f275f9057586b81466989f0fafc59 (patch) | |
| tree | 0cd76e0599e6c7b579a6a7df969d724bd156fb46 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | KVM: VMX: Improve handle_external_interrupt_irqoff inline assembly (diff) | |
| download | wireguard-linux-2408500dfc8f275f9057586b81466989f0fafc59.tar.xz wireguard-linux-2408500dfc8f275f9057586b81466989f0fafc59.zip | |
KVM: nVMX: Truncate writes to vmcs.SYSENTER_EIP/ESP for 32-bit vCPU
Explicitly truncate the data written to vmcs.SYSENTER_EIP/ESP on WRMSR
if the virtual CPU doesn't support 64-bit mode. The SYSENTER address
fields in the VMCS are natural width, i.e. bits 63:32 are dropped if the
CPU doesn't support Intel 64 architectures. This behavior is visible to
the guest after a VM-Exit/VM-Exit roundtrip, e.g. if the guest sets bits
63:32 in the actual MSR.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200428231025.12766-2-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions