Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755493AbbF0BKr (ORCPT ); Fri, 26 Jun 2015 21:10:47 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:47412 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751964AbbF0BIw (ORCPT ); Fri, 26 Jun 2015 21:08:52 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Eric Auger , Christoffer Dall , Shannon Zhao Subject: [PATCH 3.14 09/17] ARM: KVM: Unmap IPA on memslot delete/move Date: Fri, 26 Jun 2015 18:08:31 -0700 Message-Id: <20150627010820.518580340@linuxfoundation.org> X-Mailer: git-send-email 2.4.4 In-Reply-To: <20150627010820.231673616@linuxfoundation.org> References: <20150627010820.231673616@linuxfoundation.org> User-Agent: quilt/0.64 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3566 Lines: 137 3.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Eric Auger commit df6ce24f2ee485c4f9a5cb610063a5eb60da8267 upstream. Currently when a KVM region is deleted or moved after KVM_SET_USER_MEMORY_REGION ioctl, the corresponding intermediate physical memory is not unmapped. This patch corrects this and unmaps the region's IPA range in kvm_arch_commit_memory_region using unmap_stage2_range. Signed-off-by: Eric Auger Signed-off-by: Christoffer Dall Signed-off-by: Shannon Zhao Signed-off-by: Greg Kroah-Hartman --- arch/arm/kvm/arm.c | 37 ------------------------------------- arch/arm/kvm/mmu.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 46 insertions(+), 37 deletions(-) --- a/arch/arm/kvm/arm.c +++ b/arch/arm/kvm/arm.c @@ -155,16 +155,6 @@ int kvm_arch_vcpu_fault(struct kvm_vcpu return VM_FAULT_SIGBUS; } -void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, - struct kvm_memory_slot *dont) -{ -} - -int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, - unsigned long npages) -{ - return 0; -} /** * kvm_arch_destroy_vm - destroy the VM data structure @@ -224,33 +214,6 @@ long kvm_arch_dev_ioctl(struct file *fil return -EINVAL; } -void kvm_arch_memslots_updated(struct kvm *kvm) -{ -} - -int kvm_arch_prepare_memory_region(struct kvm *kvm, - struct kvm_memory_slot *memslot, - struct kvm_userspace_memory_region *mem, - enum kvm_mr_change change) -{ - return 0; -} - -void kvm_arch_commit_memory_region(struct kvm *kvm, - struct kvm_userspace_memory_region *mem, - const struct kvm_memory_slot *old, - enum kvm_mr_change change) -{ -} - -void kvm_arch_flush_shadow_all(struct kvm *kvm) -{ -} - -void kvm_arch_flush_shadow_memslot(struct kvm *kvm, - struct kvm_memory_slot *slot) -{ -} struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) { --- a/arch/arm/kvm/mmu.c +++ b/arch/arm/kvm/mmu.c @@ -1111,3 +1111,49 @@ out: free_hyp_pgds(); return err; } + +void kvm_arch_commit_memory_region(struct kvm *kvm, + struct kvm_userspace_memory_region *mem, + const struct kvm_memory_slot *old, + enum kvm_mr_change change) +{ + gpa_t gpa = old->base_gfn << PAGE_SHIFT; + phys_addr_t size = old->npages << PAGE_SHIFT; + if (change == KVM_MR_DELETE || change == KVM_MR_MOVE) { + spin_lock(&kvm->mmu_lock); + unmap_stage2_range(kvm, gpa, size); + spin_unlock(&kvm->mmu_lock); + } +} + +int kvm_arch_prepare_memory_region(struct kvm *kvm, + struct kvm_memory_slot *memslot, + struct kvm_userspace_memory_region *mem, + enum kvm_mr_change change) +{ + return 0; +} + +void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, + struct kvm_memory_slot *dont) +{ +} + +int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, + unsigned long npages) +{ + return 0; +} + +void kvm_arch_memslots_updated(struct kvm *kvm) +{ +} + +void kvm_arch_flush_shadow_all(struct kvm *kvm) +{ +} + +void kvm_arch_flush_shadow_memslot(struct kvm *kvm, + struct kvm_memory_slot *slot) +{ +} -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/