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41 lines
961 B
41 lines
961 B
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* KVM L1 hypervisor optimizations on Hyper-V for SVM. |
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*/ |
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#include <linux/kvm_host.h> |
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#include "kvm_cache_regs.h" |
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#include <asm/mshyperv.h> |
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#include "svm.h" |
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#include "svm_ops.h" |
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#include "hyperv.h" |
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#include "kvm_onhyperv.h" |
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#include "svm_onhyperv.h" |
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int svm_hv_enable_direct_tlbflush(struct kvm_vcpu *vcpu) |
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{ |
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struct hv_enlightenments *hve; |
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struct hv_partition_assist_pg **p_hv_pa_pg = |
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&to_kvm_hv(vcpu->kvm)->hv_pa_pg; |
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if (!*p_hv_pa_pg) |
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*p_hv_pa_pg = kzalloc(PAGE_SIZE, GFP_KERNEL); |
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if (!*p_hv_pa_pg) |
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return -ENOMEM; |
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hve = (struct hv_enlightenments *)to_svm(vcpu)->vmcb->control.reserved_sw; |
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hve->partition_assist_page = __pa(*p_hv_pa_pg); |
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hve->hv_vm_id = (unsigned long)vcpu->kvm; |
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if (!hve->hv_enlightenments_control.nested_flush_hypercall) { |
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hve->hv_enlightenments_control.nested_flush_hypercall = 1; |
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vmcb_mark_dirty(to_svm(vcpu)->vmcb, VMCB_HV_NESTED_ENLIGHTENMENTS); |
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} |
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return 0; |
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} |
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