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| author | Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> | 2011-11-24 17:39:18 +0800 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-12-27 11:17:37 +0200 |
| commit | be6ba0f0962a39091c52eb9167ddea201fe80716 (patch) | |
| tree | 52e46aad8cce4857def4dc03fc75955677027054 /virt | |
| parent | be593d6286075801bba6d60fa466a39c24cc7616 (diff) | |
| download | lwn-be6ba0f0962a39091c52eb9167ddea201fe80716.tar.gz lwn-be6ba0f0962a39091c52eb9167ddea201fe80716.zip | |
KVM: introduce kvm_for_each_memslot macro
Introduce kvm_for_each_memslot to walk all valid memslot
Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/iommu.c | 17 | ||||
| -rw-r--r-- | virt/kvm/kvm_main.c | 14 |
2 files changed, 15 insertions, 16 deletions
diff --git a/virt/kvm/iommu.c b/virt/kvm/iommu.c index a195c07fa829..4e5f7b7f1d2b 100644 --- a/virt/kvm/iommu.c +++ b/virt/kvm/iommu.c @@ -134,14 +134,15 @@ unmap_pages: static int kvm_iommu_map_memslots(struct kvm *kvm) { - int i, idx, r = 0; + int idx, r = 0; struct kvm_memslots *slots; + struct kvm_memory_slot *memslot; idx = srcu_read_lock(&kvm->srcu); slots = kvm_memslots(kvm); - for (i = 0; i < slots->nmemslots; i++) { - r = kvm_iommu_map_pages(kvm, &slots->memslots[i]); + kvm_for_each_memslot(memslot, slots) { + r = kvm_iommu_map_pages(kvm, memslot); if (r) break; } @@ -311,16 +312,16 @@ static void kvm_iommu_put_pages(struct kvm *kvm, static int kvm_iommu_unmap_memslots(struct kvm *kvm) { - int i, idx; + int idx; struct kvm_memslots *slots; + struct kvm_memory_slot *memslot; idx = srcu_read_lock(&kvm->srcu); slots = kvm_memslots(kvm); - for (i = 0; i < slots->nmemslots; i++) { - kvm_iommu_put_pages(kvm, slots->memslots[i].base_gfn, - slots->memslots[i].npages); - } + kvm_for_each_memslot(memslot, slots) + kvm_iommu_put_pages(kvm, memslot->base_gfn, memslot->npages); + srcu_read_unlock(&kvm->srcu, idx); return 0; diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index b5ed7770ced3..4c2900c5d81d 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -547,11 +547,11 @@ static void kvm_free_physmem_slot(struct kvm_memory_slot *free, void kvm_free_physmem(struct kvm *kvm) { - int i; struct kvm_memslots *slots = kvm->memslots; + struct kvm_memory_slot *memslot; - for (i = 0; i < slots->nmemslots; ++i) - kvm_free_physmem_slot(&slots->memslots[i], NULL); + kvm_for_each_memslot(memslot, slots) + kvm_free_physmem_slot(memslot, NULL); kfree(kvm->memslots); } @@ -975,15 +975,13 @@ EXPORT_SYMBOL_GPL(kvm_is_error_hva); static struct kvm_memory_slot *__gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn) { - int i; - - for (i = 0; i < slots->nmemslots; ++i) { - struct kvm_memory_slot *memslot = &slots->memslots[i]; + struct kvm_memory_slot *memslot; + kvm_for_each_memslot(memslot, slots) if (gfn >= memslot->base_gfn && gfn < memslot->base_gfn + memslot->npages) return memslot; - } + return NULL; } |