: 5eb4573ea63d0c83bf58fb7c243fc2c2b6966c02
patch link:
https://lore.kernel.org/r/20240428100518.1642324-4-maobibo%40loongson.cn
patch subject: [PATCH v8 3/6] LoongArch: KVM: Add cpucfg area for kvm hypervisor
config: loongarch-defconfig
(https://download.01.org/0day-ci/archive/20240429/202404290016
Instruction cpucfg can be used to get processor features. And there
is trap exception when it is executed in VM mode, and also it is
to provide cpu features to VM. On real hardware cpucfg area 0 - 20
is used. Here one specified area 0x4000 -- 0x40ff is used
for KVM hypervisor to privide
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