LoongArch: KVM: Add FPU/LBT delay load support

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FPU/LBT are lazy enabled with KVM hypervisor. After FPU/LBT enabled and
loaded, vCPU can be preempted and FPU/LBT will be lost again, there will
be unnecessary FPU/LBT exceptions, load and store stuff. Here delay the
FPU/LBT load until the guest entry.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

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Bibo Mao 2026-02-06 09:28:00 +08:00 • committed by Huacai Chen

parent b1388a9598

commit 382c38c9ec

3 changed files with 37 additions and 19 deletions

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2

arch/loongarch/include/asm/kvm_host.h

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21

arch/loongarch/kvm/exit.c

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33

arch/loongarch/kvm/vcpu.c

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