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(no To-header on input) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Originally, flush tlb is done by slot_handle_level_range(). This patch is to flush tlb directly in the kvm_zap_gfn_range() when range flush is available. Signed-off-by: Lan Tianyu --- arch/x86/kvm/mmu.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index dfd2a0710417..56538fa6c017 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -5578,6 +5578,7 @@ void kvm_zap_gfn_range(struct kvm *kvm, gfn_t gfn_sta= rt, gfn_t gfn_end) { struct kvm_memslots *slots; struct kvm_memory_slot *memslot; + bool flush =3D false; int i; =20 spin_lock(&kvm->mmu_lock); @@ -5585,18 +5586,27 @@ void kvm_zap_gfn_range(struct kvm *kvm, gfn_t gfn_s= tart, gfn_t gfn_end) slots =3D __kvm_memslots(kvm, i); kvm_for_each_memslot(memslot, slots) { gfn_t start, end; + bool flush_tlb =3D true; =20 start =3D max(gfn_start, memslot->base_gfn); end =3D min(gfn_end, memslot->base_gfn + memslot->npages); if (start >=3D end) continue; =20 - slot_handle_level_range(kvm, memslot, kvm_zap_rmapp, - PT_PAGE_TABLE_LEVEL, PT_MAX_HUGEPAGE_LEVEL, - start, end - 1, true); + if (kvm_available_flush_tlb_with_range()) + flush_tlb =3D false; + + flush =3D slot_handle_level_range(kvm, memslot, + kvm_zap_rmapp, PT_PAGE_TABLE_LEVEL, + PT_MAX_HUGEPAGE_LEVEL, start, + end - 1, flush_tlb); } } =20 + if (flush && kvm_available_flush_tlb_with_range()) + kvm_flush_remote_tlbs_with_address(kvm, gfn_start, + gfn_end - gfn_start + 1); + spin_unlock(&kvm->mmu_lock); } =20 --=20 2.14.4