diff options
author | Eric Auger <eric.auger@linaro.org> | 2014-06-06 11:10:23 +0200 |
---|---|---|
committer | Christoffer Dall <christoffer.dall@linaro.org> | 2014-07-11 04:46:52 -0700 |
commit | df6ce24f2ee485c4f9a5cb610063a5eb60da8267 (patch) | |
tree | dc0cfb6654c6c9e3f0996fa02b1ceebc2fea8339 /arch/arm/kvm | |
parent | 4f853a714bf16338ff5261128e6c7ae2569e9505 (diff) | |
download | op-kernel-dev-df6ce24f2ee485c4f9a5cb610063a5eb60da8267.zip op-kernel-dev-df6ce24f2ee485c4f9a5cb610063a5eb60da8267.tar.gz |
ARM: KVM: Unmap IPA on memslot delete/move
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 <eric.auger@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'arch/arm/kvm')
-rw-r--r-- | arch/arm/kvm/arm.c | 37 | ||||
-rw-r--r-- | arch/arm/kvm/mmu.c | 46 |
2 files changed, 46 insertions, 37 deletions
diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c index 3c82b37c..d7424ef 100644 --- a/arch/arm/kvm/arm.c +++ b/arch/arm/kvm/arm.c @@ -155,16 +155,6 @@ int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf) 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 @@ -225,33 +215,6 @@ long kvm_arch_dev_ioctl(struct file *filp, 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) { diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c index 2336061..b2a708b 100644 --- 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) +{ +} |