From: Zhou Wang <wangzhou1@hisilicon.com> virt inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/IC7KH5 ------------------------------------------------------------------------ IPIV uses ioctl to be enabled. Users (such as qemu) can invoke the ioctl to enable IPIV. Otherwise, other VMMs will enable the IPIV without knowing it. As a result, multicast and broadcast cannot be supported. Signed-off-by: Zhou Wang <wangzhou1@hisilicon.com> Signed-off-by: Jinqian Yang <yangjinqian1@huawei.com> --- arch/arm64/kvm/arm.c | 15 ++++++++++++++- include/linux/irqchip/arm-gic-v4.h | 1 + include/uapi/linux/kvm.h | 2 +- 3 files changed, 16 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 38ce562586f9..51c257588d4a 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -200,6 +200,14 @@ static int kvm_cap_arm_enable_hdbss(struct kvm *kvm, } #endif +#ifdef CONFIG_ARM64_HISI_IPIV +static int kvm_hisi_ipiv_enable_cap(struct kvm *kvm, struct kvm_enable_cap *cap) +{ + kvm->arch.vgic.its_vm.enable_ipiv_from_vmm = true; + return 0; +} +#endif + int kvm_vm_ioctl_enable_cap(struct kvm *kvm, struct kvm_enable_cap *cap) { @@ -258,6 +266,11 @@ int kvm_vm_ioctl_enable_cap(struct kvm *kvm, case KVM_CAP_ARM_HW_DIRTY_STATE_TRACK: r = kvm_cap_arm_enable_hdbss(kvm, cap); break; +#endif +#ifdef CONFIG_ARM64_HISI_IPIV + case KVM_CAP_ARM_HISI_IPIV: + r = kvm_hisi_ipiv_enable_cap(kvm, cap); + break; #endif default: r = -EINVAL; @@ -522,7 +535,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) break; #endif #ifdef CONFIG_ARM64_HISI_IPIV - case KVM_CAP_ARM_IPIV_MODE: + case KVM_CAP_ARM_HISI_IPIV: if (static_branch_unlikely(&ipiv_enable)) r = 1; else diff --git a/include/linux/irqchip/arm-gic-v4.h b/include/linux/irqchip/arm-gic-v4.h index e16a89aeed72..8743741e7a52 100644 --- a/include/linux/irqchip/arm-gic-v4.h +++ b/include/linux/irqchip/arm-gic-v4.h @@ -37,6 +37,7 @@ struct its_vm { #ifdef CONFIG_ARM64_HISI_IPIV KABI_EXTEND(struct page *vpeid_page) KABI_EXTEND(bool nassgireq) + bool enable_ipiv_from_vmm; #endif }; diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index 938613c25553..fd9991b243cd 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -1211,7 +1211,7 @@ struct kvm_ppc_resize_hpt { #define KVM_CAP_HYGON_COCO_EXT_CSV3_INJ_SECRET (1 << 2) #define KVM_CAP_ARM_HW_DIRTY_STATE_TRACK 502 -#define KVM_CAP_ARM_IPIV_MODE 503 +#define KVM_CAP_ARM_HISI_IPIV 503 #define KVM_CAP_ARM_VIRT_MSI_BYPASS 799 -- 2.33.0