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Signed-off-by: James Houghton Signed-off-by: Sean Christopherson --- include/uapi/linux/kvm.h | 1 + virt/kvm/kvm_main.c | 6 ++++++ 2 files changed, 7 insertions(+) diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index e3b871506ec85..0ba265f99f033 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -937,6 +937,7 @@ struct kvm_enable_cap { #define KVM_CAP_ARM_EL2 240 #define KVM_CAP_ARM_EL2_E2H0 241 #define KVM_CAP_RISCV_MP_STATE_RESET 242 +#define KVM_CAP_USERFAULT 243 struct kvm_irq_routing_irqchip { __u32 irqchip; diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index bef6760cd1c0e..2962be09d5ebf 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -1604,6 +1604,9 @@ static int check_memory_region_flags(struct kvm *kvm, !(mem->flags & KVM_MEM_GUEST_MEMFD)) valid_flags |= KVM_MEM_READONLY; + if (IS_ENABLED(CONFIG_KVM_GENERIC_PAGE_FAULT)) + valid_flags |= KVM_MEM_USERFAULT; + if (mem->flags & ~valid_flags) return -EINVAL; @@ -4881,6 +4884,9 @@ static int kvm_vm_ioctl_check_extension_generic(struct kvm *kvm, long arg) case KVM_CAP_CHECK_EXTENSION_VM: case KVM_CAP_ENABLE_CAP_VM: case KVM_CAP_HALT_POLL: +#ifdef CONFIG_KVM_GENERIC_PAGE_FAULT + case KVM_CAP_USERFAULT: +#endif return 1; #ifdef CONFIG_KVM_MMIO case KVM_CAP_COALESCED_MMIO: -- 2.50.0.rc2.692.g299adb8693-goog