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KVM: VMX: Fold Hyper-V EPTP checking into it's only caller

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Fold check_ept_pointer_match() into hv_remote_flush_tlb_with_range() in
preparation for combining the kvm_for_each_vcpu loops of the ==CHECK and
!=MATCH statements.

No functional change intended.

Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210305183123.3978098-5-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson 2021-03-05 10:31:16 -08:00 • committed by Paolo Bonzini
parent b68aa15cca
commit 288bee2809
1 changed files with 20 additions and 24 deletions
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44
arch/x86/kvm/vmx/vmx.c
View file

@ -472,28 +472,6 @@ static const u32 vmx_uret_msrs_list[] = {
static bool __read_mostly enlightened_vmcs = true;
module_param(enlightened_vmcs, bool, 0444);
/* check_ept_pointer() should be under protection of ept_pointer_lock. */
static void check_ept_pointer_match(struct kvm *kvm)
{
struct kvm_vcpu *vcpu;
u64 tmp_eptp = INVALID_PAGE;
int i;
kvm_for_each_vcpu(i, vcpu, kvm) {
if (!VALID_PAGE(tmp_eptp)) {
tmp_eptp = to_vmx(vcpu)->ept_pointer;
} else if (tmp_eptp != to_vmx(vcpu)->ept_pointer) {
to_kvm_vmx(kvm)->hv_tlb_eptp = INVALID_PAGE;
to_kvm_vmx(kvm)->ept_pointers_match
= EPT_POINTERS_MISMATCH;
return;
}
}
to_kvm_vmx(kvm)->hv_tlb_eptp = tmp_eptp;
to_kvm_vmx(kvm)->ept_pointers_match = EPT_POINTERS_MATCH;
}
static int kvm_fill_hv_flush_list_func(struct hv_guest_mapping_flush_list *flush,
void *data)
{
@ -523,11 +501,29 @@ static int hv_remote_flush_tlb_with_range(struct kvm *kvm,
struct kvm_vmx *kvm_vmx = to_kvm_vmx(kvm);
struct kvm_vcpu *vcpu;
int ret = 0, i;
u64 tmp_eptp;
spin_lock(&kvm_vmx->ept_pointer_lock);
if (kvm_vmx->ept_pointers_match == EPT_POINTERS_CHECK)
check_ept_pointer_match(kvm);
if (kvm_vmx->ept_pointers_match == EPT_POINTERS_CHECK) {
kvm_vmx->ept_pointers_match = EPT_POINTERS_MATCH;
kvm_vmx->hv_tlb_eptp = INVALID_PAGE;
kvm_for_each_vcpu(i, vcpu, kvm) {
tmp_eptp = to_vmx(vcpu)->ept_pointer;
if (!VALID_PAGE(tmp_eptp))
continue;
if (!VALID_PAGE(kvm_vmx->hv_tlb_eptp)) {
kvm_vmx->hv_tlb_eptp = tmp_eptp;
} else if (kvm_vmx->hv_tlb_eptp != tmp_eptp) {
kvm_vmx->hv_tlb_eptp = INVALID_PAGE;
kvm_vmx->ept_pointers_match
= EPT_POINTERS_MISMATCH;
break;
}
}
}
if (kvm_vmx->ept_pointers_match != EPT_POINTERS_MATCH) {
kvm_for_each_vcpu(i, vcpu, kvm) {