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| author |   Sean Christopherson <seanjc@google.com> | 2022-02-26 00:15:41 +0000 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2022-03-08 10:59:09 -0500 |
| commit | 58298b068137f419de8bc839d54ceacaec788870 (patch) | |
| tree | eb453b5dafdba942b205b5df8b8fce07ee8fdb37 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | KVM: x86/mmu: Zap defunct roots via asynchronous worker (diff) | |
| download | wireguard-linux-58298b068137f419de8bc839d54ceacaec788870.tar.xz wireguard-linux-58298b068137f419de8bc839d54ceacaec788870.zip | |
KVM: x86/mmu: Check for a REMOVED leaf SPTE before making the SPTE
Explicitly check for a REMOVED leaf SPTE prior to attempting to map
the final SPTE when handling a TDP MMU fault. Functionally, this is a
nop as tdp_mmu_set_spte_atomic() will eventually detect the frozen SPTE.
Pre-checking for a REMOVED SPTE is a minor optmization, but the real goal
is to allow tdp_mmu_set_spte_atomic() to have an invariant that the "old"
SPTE is never a REMOVED SPTE.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Ben Gardon <bgardon@google.com>
Message-Id: <20220226001546.360188-24-seanjc@google.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