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| author |  Sean Christopherson <seanjc@google.com>
| 2023-07-28 18:35:34 -0700 |
|---|---|---|
| committer |  Paolo Bonzini <pbonzini@redhat.com>
| 2023-08-31 14:08:19 -0400 |
| commit | f22b1e8500b449fabc33ca271cd8e91749fa63b4 (patch) | |
| tree | 3be59f09e9872d46419fc03c2d062723cb22a23a /arch/x86/include | |
| parent | KVM: x86/mmu: Drop @slot param from exported/external page-track APIs (diff) | |
| download | linux-f22b1e8500b449fabc33ca271cd8e91749fa63b4.tar.gz linux-f22b1e8500b449fabc33ca271cd8e91749fa63b4.tar.bz2 linux-f22b1e8500b449fabc33ca271cd8e91749fa63b4.zip | |
KVM: x86/mmu: Handle KVM bookkeeping in page-track APIs, not callers
Get/put references to KVM when a page-track notifier is (un)registered
instead of relying on the caller to do so. Forcing the caller to do the
bookkeeping is unnecessary and adds one more thing for users to get
wrong, e.g. see commit 9ed1fdee9ee3 ("drm/i915/gvt: Get reference to KVM
iff attachment to VM is successful").
Reviewed-by: Yan Zhao <yan.y.zhao@intel.com>
Tested-by: Yongwei Ma <yongwei.ma@intel.com>
Link: https://lore.kernel.org/r/20230729013535.1070024-29-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/kvm_page_track.h | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/arch/x86/include/asm/kvm_page_track.h b/arch/x86/include/asm/kvm_page_track.h index 4afab697e21c..3d040741044b 100644 --- a/arch/x86/include/asm/kvm_page_track.h +++ b/arch/x86/include/asm/kvm_page_track.h @@ -44,12 +44,11 @@ struct kvm_page_track_notifier_node { struct kvm_page_track_notifier_node *node); }; -void -kvm_page_track_register_notifier(struct kvm *kvm, - struct kvm_page_track_notifier_node *n); -void -kvm_page_track_unregister_notifier(struct kvm *kvm, - struct kvm_page_track_notifier_node *n); +int kvm_page_track_register_notifier(struct kvm *kvm, + struct kvm_page_track_notifier_node *n); +void kvm_page_track_unregister_notifier(struct kvm *kvm, + struct kvm_page_track_notifier_node *n); + int kvm_write_track_add_gfn(struct kvm *kvm, gfn_t gfn); int kvm_write_track_remove_gfn(struct kvm *kvm, gfn_t gfn); #else |