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| author |   Sean Christopherson <seanjc@google.com> | 2023-10-27 11:21:48 -0700 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2023-11-13 05:29:09 -0500 |
| commit | 4a2e993faad3880962540ab8e3b68f22e48b18e8 (patch) | |
| tree | 33bae983cad6eb6a83b71cc959afb1591fed5410 /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | KVM: PPC: Drop dead code related to KVM_ARCH_WANT_MMU_NOTIFIER (diff) | |
| download | wireguard-linux-4a2e993faad3880962540ab8e3b68f22e48b18e8.tar.xz wireguard-linux-4a2e993faad3880962540ab8e3b68f22e48b18e8.zip | |
KVM: PPC: Return '1' unconditionally for KVM_CAP_SYNC_MMU
Advertise that KVM's MMU is synchronized with the primary MMU for all
flavors of PPC KVM support, i.e. advertise that the MMU is synchronized
when CONFIG_KVM_BOOK3S_HV_POSSIBLE=y but the VM is not using hypervisor
mode (a.k.a. PR VMs). PR VMs, via kvm_unmap_gfn_range_pr(), do the right
thing for mmu_notifier invalidation events, and more tellingly, KVM
returns '1' for KVM_CAP_SYNC_MMU when CONFIG_KVM_BOOK3S_HV_POSSIBLE=n
and CONFIG_KVM_BOOK3S_PR_POSSIBLE=y, i.e. KVM already advertises a
synchronized MMU for PR VMs, just not when CONFIG_KVM_BOOK3S_HV_POSSIBLE=y.
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20231027182217.3615211-7-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
0 files changed, 0 insertions, 0 deletions