KVM: vmx: fix build warnings in hv_enable_direct_tlbflush() on i386 (cab01850) · Commits · 戴 / test

The following was reported on i386: arch/x86/kvm/vmx/vmx.c: In function 'hv_enable_direct_tlbflush': arch/x86/kvm/vmx/vmx.c:503:10: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] pr_debugs() in this function are more or less useless, let's just remove them. evmcs->hv_vm_id can use 'unsigned long' instead of 'u64'. Also, simplify the code a little bit. Reported-by:

kbuild test robot <lkp@intel.com> Signed-off-by:

Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by:

Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/vmx/vmx.c

+5 −9

Original line number	Diff line number	Diff line
		@@ -537,23 +537,19 @@ static int hv_enable_direct_tlbflush(struct kvm_vcpu *vcpu)
		* Synthetic VM-Exit is not enabled in current code and so All
		* evmcs in singe VM shares same assist page.
		*/
		if (!*p_hv_pa_pg) {
		if (!*p_hv_pa_pg)
		*p_hv_pa_pg = kzalloc(PAGE_SIZE, GFP_KERNEL);

		if (!*p_hv_pa_pg)
		return -ENOMEM;
		pr_debug("KVM: Hyper-V: allocated PA_PG for %llx\n",
		(u64)&vcpu->kvm);
		}

		evmcs = (struct hv_enlightened_vmcs *)to_vmx(vcpu)->loaded_vmcs->vmcs;

		evmcs->partition_assist_page =
		__pa(*p_hv_pa_pg);
		evmcs->hv_vm_id = (u64)vcpu->kvm;
		evmcs->hv_vm_id = (unsigned long)vcpu->kvm;
		evmcs->hv_enlightenments_control.nested_flush_hypercall = 1;

		pr_debug("KVM: Hyper-V: enabled DIRECT flush for %llx\n",
		(u64)vcpu->kvm);
		return 0;
		}

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