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| author | Sasha Levin <levinsasha928@gmail.com> | 2011-12-04 19:36:28 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-12-27 11:22:20 +0200 |
| commit | cdfca7b346e6dbab1ba33260c28ccb8333485a5b (patch) | |
| tree | 423d4487ee5604a69943e8daade01fbec1879ef6 | |
| parent | 3f745f1e224e05e845a15760a55f3fd323f7a753 (diff) | |
| download | op-kernel-dev-cdfca7b346e6dbab1ba33260c28ccb8333485a5b.zip op-kernel-dev-cdfca7b346e6dbab1ba33260c28ccb8333485a5b.tar.gz | |
KVM: Use kmemdup() instead of kmalloc/memcpy
Switch to kmemdup() in two places to shorten the code and avoid possible bugs.
Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
| -rw-r--r-- | arch/x86/kvm/x86.c | 4 | ||||
| -rw-r--r-- | virt/kvm/kvm_main.c | 7 |
2 files changed, 5 insertions, 6 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index d55a94f..03042d6 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -3031,10 +3031,10 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, memset(dirty_bitmap_head, 0, n); r = -ENOMEM; - slots = kzalloc(sizeof(struct kvm_memslots), GFP_KERNEL); + slots = kmemdup(kvm->memslots, sizeof(*kvm->memslots), GFP_KERNEL); if (!slots) goto out; - memcpy(slots, kvm->memslots, sizeof(struct kvm_memslots)); + memslot = id_to_memslot(slots, log->slot); memslot->nr_dirty_pages = 0; memslot->dirty_bitmap = dirty_bitmap_head; diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index e289486..a6e612f 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -2591,13 +2591,12 @@ int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, int i, r; struct kvm_io_bus *new_bus, *bus; - new_bus = kzalloc(sizeof(struct kvm_io_bus), GFP_KERNEL); + bus = kvm->buses[bus_idx]; + + new_bus = kmemdup(bus, sizeof(*bus), GFP_KERNEL); if (!new_bus) return -ENOMEM; - bus = kvm->buses[bus_idx]; - memcpy(new_bus, bus, sizeof(struct kvm_io_bus)); - r = -ENOENT; for (i = 0; i < new_bus->dev_count; i++) if (new_bus->range[i].dev == dev) { |
