tree 3a08b71fe1577f3848af20f47381ae661d664243
parent 95fce4fa0850da8f85ecf8d069ab3fc6c8bc1478
author Wanpeng Li <wanpeng.li@linux.intel.com> 1429064694 +0800
committer Paolo Bonzini <pbonzini@redhat.com> 1429110061 +0200

kvm: mmu: don't do memslot overflow check

As Andres pointed out:

| I don't understand the value of this check here. Are we looking for a
| broken memslot? Shouldn't this be a BUG_ON? Is this the place to care
| about these things? npages is capped to KVM_MEM_MAX_NR_PAGES, i.e.
| 2^31. A 64 bit overflow would be caused by a gigantic gfn_start which
| would be trouble in many other ways.

This patch drops the memslot overflow check to make the codes more simple.

Reviewed-by: Andres Lagar-Cavilla <andreslc@google.com>
Signed-off-by: Wanpeng Li <wanpeng.li@linux.intel.com>
Message-Id: <1429064694-3072-1-git-send-email-wanpeng.li@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>