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| author | Zhenzhong Duan <[email protected]> | 2022-03-11 10:26:43 +0000 |
|---|---|---|
| committer | Paolo Bonzini <[email protected]> | 2022-04-02 09:37:26 +0000 |
| commit | 4335edbbc1284259b17590f76a21fd4a162b4305 (patch) | |
| tree | 76a329197cd01455b867b9c66e6113baeafc26d7 /tools/perf/scripts/python/event_analyzing_sample.py | |
| parent | KVM: x86: cleanup enter_rmode() (diff) | |
| download | kernel-4335edbbc1284259b17590f76a21fd4a162b4305.tar.gz kernel-4335edbbc1284259b17590f76a21fd4a162b4305.zip | |
KVM: x86: Remove redundant vm_entry_controls_clearbit() call
When emulating exit from long mode, EFER_LMA is cleared with
vmx_set_efer(). This will already unset the VM_ENTRY_IA32E_MODE control
bit as requested by SDM, so there is no need to unset VM_ENTRY_IA32E_MODE
again in exit_lmode() explicitly. In case EFER isn't supported by
hardware, long mode isn't supported, so exit_lmode() cannot be reached.
Note that, thanks to the shadow controls mechanism, this change doesn't
eliminate vmread or vmwrite.
Signed-off-by: Zhenzhong Duan <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/event_analyzing_sample.py')
0 files changed, 0 insertions, 0 deletions