KVM: replace vmalloc and memset with vzalloc

Let's use newly introduced vzalloc().

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

1 files changed, 2 insertions, 7 deletions

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index f2c2d84723c2..13cefe226e44 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -640,13 +640,11 @@ int __kvm_set_memory_region(struct kvm *kvm,
         /* Allocate if a slot is being created */
 #ifndef CONFIG_S390
         if (npages && !new.rmap) {
-                new.rmap = vmalloc(npages * sizeof(*new.rmap));
+                new.rmap = vzalloc(npages * sizeof(*new.rmap));
 
                 if (!new.rmap)
                         goto out_free;
 
-                memset(new.rmap, 0, npages * sizeof(*new.rmap));
-
                 new.user_alloc = user_alloc;
                 new.userspace_addr = mem->userspace_addr;
         }
@@ -669,14 +667,11 @@ int __kvm_set_memory_region(struct kvm *kvm,
                              >> KVM_HPAGE_GFN_SHIFT(level));
                 lpages -= base_gfn >> KVM_HPAGE_GFN_SHIFT(level);
 
-                new.lpage_info[i] = vmalloc(lpages * sizeof(*new.lpage_info[i]));
+                new.lpage_info[i] = vzalloc(lpages * sizeof(*new.lpage_info[i]));
 
                 if (!new.lpage_info[i])
                         goto out_free;
 
-                memset(new.lpage_info[i], 0,
-                       lpages * sizeof(*new.lpage_info[i]));
-
                 if (base_gfn & (KVM_PAGES_PER_HPAGE(level) - 1))
                         new.lpage_info[i][0].write_count = 1;
                 if ((base_gfn+npages) & (KVM_PAGES_PER_HPAGE(level) - 1))