x86, cleanups: Use clear_page/copy_page rather than memset/memcpy

When operating on whole pages, use clear_page() and copy_page() in
favor of memset() and memcpy(); after all that's what they are
intended for.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
LKML-Reference: <4C7FB8CA0200007800013F51@vpn.id2.novell.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 77d8c0f4817d..22b06f7660f4 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -1056,14 +1056,13 @@ int kvm_create_lapic(struct kvm_vcpu *vcpu)
 
         vcpu->arch.apic = apic;
 
-        apic->regs_page = alloc_page(GFP_KERNEL);
+        apic->regs_page = alloc_page(GFP_KERNEL|__GFP_ZERO);
         if (apic->regs_page == NULL) {
                 printk(KERN_ERR "malloc apic regs error for vcpu %x\n",
                        vcpu->vcpu_id);
                 goto nomem_free_apic;
         }
         apic->regs = page_address(apic->regs_page);
-        memset(apic->regs, 0, PAGE_SIZE);
         apic->vcpu = vcpu;
 
         hrtimer_init(&apic->lapic_timer.timer, CLOCK_MONOTONIC,