diff options
| author | James Houghton <jthoughton@google.com> | 2025-02-04 00:40:29 +0000 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2025-02-14 07:16:35 -0800 |
| commit | aa34b811650ce87a82d1bff027eeb15e2856f7bb (patch) | |
| tree | 726f5e1cfeac59a9b3c042e079a1709dc4f90ccd /include/linux/kvm_host.h | |
| parent | 374ccd63600bc98453e7ab33fd457b57f6faacbc (diff) | |
KVM: Allow lockless walk of SPTEs when handing aging mmu_notifier event
It is possible to correctly do aging without taking the KVM MMU lock,
or while taking it for read; add a Kconfig to let architectures do so.
Architectures that select KVM_MMU_LOCKLESS_AGING are responsible for
correctness.
Suggested-by: Yu Zhao <yuzhao@google.com>
Signed-off-by: James Houghton <jthoughton@google.com>
Reviewed-by: David Matlack <dmatlack@google.com>
Link: https://lore.kernel.org/r/20250204004038.1680123-3-jthoughton@google.com
[sean: massage shortlog+changelog, fix Kconfig goof and shorten name]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'include/linux/kvm_host.h')
| -rw-r--r-- | include/linux/kvm_host.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index f34f4cfaa513..c28a6aa1f2ed 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -267,6 +267,7 @@ struct kvm_gfn_range { union kvm_mmu_notifier_arg arg; enum kvm_gfn_range_filter attr_filter; bool may_block; + bool lockless; }; bool kvm_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range); bool kvm_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range); |