virt inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I40FGG
CVE: NA

-----------------------------

For HCR_EL2, TWEDEn(bit[59]) decides whether TWED is enabled, and
when the configurable delay is enabled, TWEDEL (bits[63:60]) encodes
the minimum delay in taking a trap of WFE caused by the TWE bit in
this register as 2^(TWEDEL + 8) cycles.

We use two kernel parameters "twed_enable" and "twedel" to configure
the register.
Signed-off-by: NZengruan Ye <yezengruan@huawei.com>
Signed-off-by: NJingyi Wang <wangjingyi11@huawei.com>
Reviewed-by: NKeqian Zhu <zhukeqian1@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>