Backport subject : Part of KVM ONEREG

[yechao-w]

主线kvm one reg补丁backport，目前的支持情况如下(原始内容来自 #38 和 #29 )

RVA22U64 Mandatory

ISA String	Mainline HWPROBE	Mainline KVM_ONEREG	Backport HWPROBE	Backport KVM_ONEREG
IMAFDC	✅	✅	Exists	Exists
B	N/A	N/A	N/A	N/A
Zicsr	N/A	✅	✅	✅
Zicntr	✅	✅	✅	✅
Zihpm	✅	✅	✅	✅
Ziccif	N/A	❌	N/A
Ziccrse	N/A	✅	✅	✅(new)
Ziccamoa	N/A	❌	N/A
Zicclsm	N/A	❌	N/A
Za64rs	N/A	N/A	N/A
Zihintpause	✅	✅	✅	✅
Zba	✅	✅	✅	✅
Zbb	✅	✅	✅	✅
Zbs	✅	✅	✅	✅
Zic64b	N/A	N/A	N/A
Zicbom	✅	✅	✅	✅
Zicbop	❌	❌	❌
Zicboz	✅	✅	✅	✅
Zfhmin	✅	✅	✅	✅(new)
Zkt	✅	✅	✅	✅(new)

RVA22S64 Mandatory

ISA String	Mainline HWPROBE	Mainline KVM_ONEREG	Backport HWPROBE	Backport KVM_ONEREG
Svbare	N/A	✅	N/A	✅
Sv39	✅	✅	✅	✅
Svade	N/A	✅	✅	✅(new)
Ssccptr	N/A	N/A	N/A
Sstvecd	N/A	❌	N/A
Sstvala	N/A	❌	N/A
Sscounterenw	N/A	❌	N/A
Svpbmt	N/A	✅	✅	✅
Svinval	N/A	✅	✅	✅

RVA23U64 Mandatory

ISA String	Mainline HWPROBE	Mainline KVM_ONEREG	Backport HWPROBE	Backport KVM_ONEREG
V	✅	✅	✅	✅
Zvfhmin	✅	✅	✅	✅(new)
Zvbb	✅	✅	✅	✅(new)
Zvkt	✅	✅	✅	✅(new)
Zihintntl	✅	✅	✅	✅(new)
Zicond	✅	✅	✅	✅(new)
Zimop	✅	✅	✅	✅(new)
Zcmop	✅	✅	✅	✅(new)
Zcb	✅	✅	✅	✅(new)
Zfa	✅	✅	✅	✅(new)
Zawrs	✅	✅	✅	✅(new)
Supm	✅	N/A	✅

RVA23S64 Mandatory

ISA String	Mainline HWPROBE	Mainline KVM_ONEREG	Backport HWPROBE	Backport KVM_ONEREG
Zifencei	✅	✅	✅	✅
Ss1p13	N/A	N/A	N/A
Svnapot	✅	✅	✅	✅
Sstc	✅	✅	✅	✅
Sscofpmf	✅	✅	✅
Ssnpm	✅	✅	✅	✅(new)
Ssu64xl	N/A	❌	N/A
Sha	N/A	N/A	N/A
H	N/A	✅	N/A
Sstateen	N/A	❌	N/A
Shcounterenw	N/A	❌	N/A
Shvstvala	N/A	❌	N/A
Shtvala	N/A	❌	N/A
Shvstvecd	N/A ❌	N/A
Shvsatpa	N/A	❌	N/A
Shgatpa	N/A	❌	N/A

Server Platform

ISA String	Profile	Mainline HWPROBE Mainline	KVM_ONEREG	Backport HWPROBE	Backport KVM_ONEREG
Sv48	RVA22S64 Optional	✅	✅	✅	✅
Svadu	RVA23S64 Optional	✅	✅	✅	✅(new)
Sdtrig	RVA23S64 Optional	N/A	❌	N/A
Sdext	-	N/A	?
Zkr	RVA22S64 Optional	✅	✅	✅	✅(new)
Ssccfg	-	N/A	?	N/A
Sscsrind	-	N/A	?	N/A
Ssstrict	RVA23S64 Optional	N/A	❌	N/A
Ssaia	-	✅	✅	✅	✅

新增上面new标签的kvm onereg支持。