[ELSA-2020-5526] Unbreakable Enterprise kernel security update

[4.14.35-1902.10.4.el7uek]

- kvm: Don't reference vcpu->arch.st in arch-independent code (Boris Ostrovsky) [Orabug: 30489861]
- kvm: fix compile on s390 part 2 (Christian Borntraeger) [Orabug: 30489861]
- kvm: fix compilation on s390 (Paolo Bonzini) [Orabug: 30489861]
- kvm: fix compilation on aarch64 (Paolo Bonzini) [Orabug: 30489861]

[4.14.35-1902.10.3.el7uek]
- x86/KVM: Clean up host's steal time structure (Boris Ostrovsky) [Orabug: 30489861] {CVE-2019-3016} {CVE-2019-3016}
- x86/KVM: Make sure KVM_VCPU_FLUSH_TLB flag is not missed (Boris Ostrovsky) [Orabug: 30489861] {CVE-2019-3016} {CVE-2019-3016}

- x86/kvm: Cache gfn to pfn translation (Boris Ostrovsky) [Orabug: 30489861] {CVE-2019-3016} {CVE-2019-3016}
- x86/kvm: Introduce kvm_(un)map_gfn() (Boris Ostrovsky) [Orabug: 30489861] {CVE-2019-3016} {CVE-2019-3016}
- x86/kvm: Be careful not to clear KVM_VCPU_FLUSH_TLB bit (Boris Ostrovsky) [Orabug: 30489861] {CVE-2019-3016} {CVE-2019-3016}

- KVM: Properly check if page is valid in kvm_vcpu_unmap (KarimAllah Ahmed) [Orabug: 30489861]
- KVM: Introduce a new guest mapping API (KarimAllah Ahmed) [Orabug: 30489861]
- KVM: x86: svm: make sure NMI is injected after nmi_singlestep (Vitaly Kuznetsov) [Orabug: 30714532]