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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2021-05-26 15:20:18 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-06-17 13:09:48 -0400 |
| commit | 02761716801dbc99d977bb281de7c1052405c9f5 (patch) | |
| tree | 965a13116e576ba354d782e336d8fdaad40d3e7d /tools/perf/scripts/python/syscall-counts.py | |
| parent | KVM: nVMX: Don't set 'dirty_vmcs12' flag on enlightened VMPTRLD (diff) | |
| download | linux-02761716801dbc99d977bb281de7c1052405c9f5.tar.gz linux-02761716801dbc99d977bb281de7c1052405c9f5.zip | |
KVM: nVMX: Release eVMCS when enlightened VMENTRY was disabled
In theory, L1 can try to disable enlightened VMENTRY in VP assist page and
try to issue VMLAUNCH/VMRESUME. While nested_vmx_handle_enlightened_vmptrld()
properly handles this as 'EVMPTRLD_DISABLED', previously mapped eVMCS
remains mapped and thus all evmptr_is_valid() checks will still pass and
nested_vmx_run() will proceed when it shouldn't.
Release eVMCS immediately when we detect that enlightened vmentry was
disabled by L1.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210526132026.270394-4-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions