virt inclusion
category: feature
bugzilla: 46853
CVE: NA

Export vcpu_stat via debugfs for x86, which contains x86 kvm exits items.
The path of the vcpu_stat is /sys/kernel/debug/kvm/vcpu_stat, and
each line of vcpu_stat is a collection of various kvm exits for a vcpu.
And through vcpu_stat, we only need to open one file to
tail performance of virtual machine, which is more convenient.
Signed-off-by: NFeng Lin <linfeng23@huawei.com>
Signed-off-by: Nchenjiajun <chenjiajun8@huawei.com>
Reviewed-by: NXiangyou Xie <xiexiangyou@huawei.com>
Acked-by: NXie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: NChen Jun <chenjun102@huawei.com>