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Hallyn" Cc: kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, Chao Peng , Fuad Tabba , Jarkko Sakkinen , Anish Moorthy , Yu Zhang , Isaku Yamahata , Xu Yilun , Vlastimil Babka , Vishal Annapurve , Ackerley Tng , Maciej Szmigiero , David Hildenbrand , Quentin Perret , Michael Roth , Wang , Liam Merwick , Isaku Yamahata , "Kirill A . Shutemov" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Rework and rename "struct kvm_hva_range" into "kvm_mmu_notifier_range" so that the structure can be used to handle notifications that operate on gfn context, i.e. that aren't tied to a host virtual address. Practically speaking, this is a nop for 64-bit kernels as the only meaningful change is to store start+end as u64s instead of unsigned longs. Reviewed-by: Paolo Bonzini Signed-off-by: Sean Christopherson Reviewed-by: Xiaoyao Li --- virt/kvm/kvm_main.c | 34 +++++++++++++++++++--------------- 1 file changed, 19 insertions(+), 15 deletions(-) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 486800a7024b..0524933856d4 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -541,18 +541,22 @@ static inline struct kvm *mmu_notifier_to_kvm(struct = mmu_notifier *mn) return container_of(mn, struct kvm, mmu_notifier); } =20 -typedef bool (*hva_handler_t)(struct kvm *kvm, struct kvm_gfn_range *range= ); +typedef bool (*gfn_handler_t)(struct kvm *kvm, struct kvm_gfn_range *range= ); =20 typedef void (*on_lock_fn_t)(struct kvm *kvm, unsigned long start, unsigned long end); =20 typedef void (*on_unlock_fn_t)(struct kvm *kvm); =20 -struct kvm_hva_range { - unsigned long start; - unsigned long end; +struct kvm_mmu_notifier_range { + /* + * 64-bit addresses, as KVM notifiers can operate on host virtual + * addresses (unsigned long) and guest physical addresses (64-bit). + */ + u64 start; + u64 end; union kvm_mmu_notifier_arg arg; - hva_handler_t handler; + gfn_handler_t handler; on_lock_fn_t on_lock; on_unlock_fn_t on_unlock; bool flush_on_ret; @@ -581,7 +585,7 @@ static const union kvm_mmu_notifier_arg KVM_MMU_NOTIFIE= R_NO_ARG; node =3D interval_tree_iter_next(node, start, last)) \ =20 static __always_inline int __kvm_handle_hva_range(struct kvm *kvm, - const struct kvm_hva_range *range) + const struct kvm_mmu_notifier_range *range) { bool ret =3D false, locked =3D false; struct kvm_gfn_range gfn_range; @@ -608,9 +612,9 @@ static __always_inline int __kvm_handle_hva_range(struc= t kvm *kvm, unsigned long hva_start, hva_end; =20 slot =3D container_of(node, struct kvm_memory_slot, hva_node[slots->nod= e_idx]); - hva_start =3D max(range->start, slot->userspace_addr); - hva_end =3D min(range->end, slot->userspace_addr + - (slot->npages << PAGE_SHIFT)); + hva_start =3D max_t(unsigned long, range->start, slot->userspace_addr); + hva_end =3D min_t(unsigned long, range->end, + slot->userspace_addr + (slot->npages << PAGE_SHIFT)); =20 /* * To optimize for the likely case where the address @@ -660,10 +664,10 @@ static __always_inline int kvm_handle_hva_range(struc= t mmu_notifier *mn, unsigned long start, unsigned long end, union kvm_mmu_notifier_arg arg, - hva_handler_t handler) + gfn_handler_t handler) { struct kvm *kvm =3D mmu_notifier_to_kvm(mn); - const struct kvm_hva_range range =3D { + const struct kvm_mmu_notifier_range range =3D { .start =3D start, .end =3D end, .arg =3D arg, @@ -680,10 +684,10 @@ static __always_inline int kvm_handle_hva_range(struc= t mmu_notifier *mn, static __always_inline int kvm_handle_hva_range_no_flush(struct mmu_notifi= er *mn, unsigned long start, unsigned long end, - hva_handler_t handler) + gfn_handler_t handler) { struct kvm *kvm =3D mmu_notifier_to_kvm(mn); - const struct kvm_hva_range range =3D { + const struct kvm_mmu_notifier_range range =3D { .start =3D start, .end =3D end, .handler =3D handler, @@ -771,7 +775,7 @@ static int kvm_mmu_notifier_invalidate_range_start(stru= ct mmu_notifier *mn, const struct mmu_notifier_range *range) { struct kvm *kvm =3D mmu_notifier_to_kvm(mn); - const struct kvm_hva_range hva_range =3D { + const struct kvm_mmu_notifier_range hva_range =3D { .start =3D range->start, .end =3D range->end, .handler =3D kvm_unmap_gfn_range, @@ -835,7 +839,7 @@ static void kvm_mmu_notifier_invalidate_range_end(struc= t mmu_notifier *mn, const struct mmu_notifier_range *range) { struct kvm *kvm =3D mmu_notifier_to_kvm(mn); - const struct kvm_hva_range hva_range =3D { + const struct kvm_mmu_notifier_range hva_range =3D { .start =3D range->start, .end =3D range->end, .handler =3D (void *)kvm_null_fn, --=20 2.42.0.283.g2d96d420d3-goog