Since dirty_bitmap pointer is allocated with function __vcalloc(), there is __GFP_ZERO flag set in the implementation about this function __vcalloc_noprof(). It is not necessary to clear dirty_bitmap buffer with zero again. Signed-off-by: Bibo Mao <maobibo@xxxxxxxxxxx> --- virt/kvm/kvm_main.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 14841acb8b95..c7d4a041dcfa 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -1669,9 +1669,6 @@ static int kvm_prepare_memory_region(struct kvm *kvm, r = kvm_alloc_dirty_bitmap(new); if (r) return r; - - if (kvm_dirty_log_manual_protect_and_init_set(kvm)) - bitmap_set(new->dirty_bitmap, 0, new->npages); } } base-commit: 83a7eefedc9b56fe7bfeff13b6c7356688ffa670 -- 2.39.3
