blob: 98aa981c04ec5ff8db55e6f1dfa20cc912af4cc0 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* KVM L1 hypervisor optimizations on Hyper-V for SVM.
*/
#include <linux/kvm_host.h>
#include "kvm_cache_regs.h"
#include <asm/mshyperv.h>
#include "svm.h"
#include "svm_ops.h"
#include "hyperv.h"
#include "kvm_onhyperv.h"
#include "svm_onhyperv.h"
int svm_hv_enable_direct_tlbflush(struct kvm_vcpu *vcpu)
{
struct hv_enlightenments *hve;
struct hv_partition_assist_pg **p_hv_pa_pg =
&to_kvm_hv(vcpu->kvm)->hv_pa_pg;
if (!*p_hv_pa_pg)
*p_hv_pa_pg = kzalloc(PAGE_SIZE, GFP_KERNEL);
if (!*p_hv_pa_pg)
return -ENOMEM;
hve = (struct hv_enlightenments *)to_svm(vcpu)->vmcb->control.reserved_sw;
hve->partition_assist_page = __pa(*p_hv_pa_pg);
hve->hv_vm_id = (unsigned long)vcpu->kvm;
if (!hve->hv_enlightenments_control.nested_flush_hypercall) {
hve->hv_enlightenments_control.nested_flush_hypercall = 1;
vmcb_mark_dirty(to_svm(vcpu)->vmcb, VMCB_HV_NESTED_ENLIGHTENMENTS);
}
return 0;
}
|
