查看漏洞修补情况：/sys/devices/system/cpu/vulnerabilities/*_RToax

[[email protected] qemu-2.8.1]$ head /sys/devices/system/cpu/vulnerabilities/*
==> /sys/devices/system/cpu/vulnerabilities/itlb_multihit <==
KVM: Mitigation: Split huge pages

==> /sys/devices/system/cpu/vulnerabilities/l1tf <==
Not affected

==> /sys/devices/system/cpu/vulnerabilities/mds <==
Not affected

==> /sys/devices/system/cpu/vulnerabilities/meltdown <==
Not affected

==> /sys/devices/system/cpu/vulnerabilities/spec_store_bypass <==
Mitigation: Speculative Store Bypass disabled via prctl and seccomp

==> /sys/devices/system/cpu/vulnerabilities/spectre_v1 <==
Mitigation: usercopy/swapgs barriers and __user pointer sanitization

==> /sys/devices/system/cpu/vulnerabilities/spectre_v2 <==
Mitigation: Enhanced IBRS, IBPB: conditional, RSB filling

==> /sys/devices/system/cpu/vulnerabilities/srbds <==
Not affected

==> /sys/devices/system/cpu/vulnerabilities/tsx_async_abort <==
Not affected qemu-2.8.1]$ head /sys/devic