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LoongArch: KVM: Add PTW feature detection on new hardware

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With new Loongson-3A6000/3C6000 hardware platforms (or later), hardware
page table walking (PTW) feature is supported on host. So here add this
feature detection on KVM host.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: maoxiaochuan <maoxiaochuan@loongson.cn>
This commit is contained in:
Bibo Mao
2026-02-04 16:41:24 +08:00
committed by maoxiaochuan
parent e6bdf0ac32
commit 3f4e156e83
3 changed files with 7 additions and 0 deletions
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arch/loongarch/include/uapi/asm/kvm.h
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@@ -101,6 +101,7 @@ struct kvm_fpu {
#define KVM_LOONGARCH_VM_FEAT_PMU 5
#define KVM_LOONGARCH_VM_FEAT_PV_IPI 6
#define KVM_LOONGARCH_VM_FEAT_PV_STEALTIME 7
#define KVM_LOONGARCH_VM_FEAT_PTW 8
/* Device Control API on vcpu fd */
#define KVM_LOONGARCH_VCPU_CPUCFG 0