Unverified Commit bc79b881 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!15373 KVM: x86: Reject Hyper-V's SEND_IPI hypercalls if local APIC isn't in-kernel 

Merge Pull Request from: @ci-robot 
 
PR sync from: Yang Yingliang <yangyingliang@huawei.com>
https://mailweb.openeuler.org/archives/list/kernel@openeuler.org/message/Z4A25JOITZ6WVNXEDH2T2VUHKNYKZV5Q/ 
 
https://gitee.com/src-openeuler/kernel/issues/IBPC6G 
 
Link:https://gitee.com/openeuler/kernel/pulls/15373

 

Reviewed-by: default avatarXie XiuQi <xiexiuqi@huawei.com>
Reviewed-by: default avatarLi Nan <linan122@huawei.com>
Signed-off-by: default avatarLi Nan <linan122@huawei.com>
parents c3866795 7fa6ce50

arch/x86/kvm/hyperv.c

+5 −1
Original line number Diff line number Diff line
@@ -1618,6 +1618,9 @@ static u64 kvm_hv_send_ipi(struct kvm_vcpu *current_vcpu, u64 ingpa, u64 outgpa, 
	u32 vector;

	bool all_cpus;



	if (!lapic_in_kernel(current_vcpu))

		return HV_STATUS_INVALID_HYPERCALL_INPUT;



	if (!ex) {

		if (!fast) {

			if (unlikely(kvm_read_guest(kvm, ingpa, &send_ipi,
@@ -2060,6 +2063,7 @@ int kvm_vcpu_ioctl_get_hv_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid2 *cpuid, 
			ent->eax |= HV_X64_REMOTE_TLB_FLUSH_RECOMMENDED;

			ent->eax |= HV_X64_APIC_ACCESS_RECOMMENDED;

			ent->eax |= HV_X64_RELAXED_TIMING_RECOMMENDED;

			if (!vcpu || lapic_in_kernel(vcpu))

				ent->eax |= HV_X64_CLUSTER_IPI_RECOMMENDED;

			ent->eax |= HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED;

			if (evmcs_ver)