[PATCH v2 6/6] KVM: x86/mmu: Use 1 as the size of gfn range for tlb flushing in FNAME(invlpg)()

Hou Wenlong
2022-08-24T09:29:58Z

Only SP with PG_LEVLE_4K level could be unsync, so the size of gfn range
must be 1.

Signed-off-by: Hou Wenlong <houwenlong.hwl@antgroup.com>
---
arch/x86/kvm/mmu/paging_tmpl.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kvm/mmu/paging_tmpl.h b/arch/x86/kvm/mmu/paging_tmpl.h
index 04149c704d5b..486a3163b1e4 100644
--- a/arch/x86/kvm/mmu/paging_tmpl.h
+++ b/arch/x86/kvm/mmu/paging_tmpl.h
@@ -937,7 +937,8 @@ static void FNAME(invlpg)(struct kvm_vcpu *vcpu, gva_t gva, hpa_t root_hpa)

mmu_page_zap_pte(vcpu->kvm, sp, sptep, NULL);
if (is_shadow_present_pte(old_spte))
- kvm_flush_remote_tlbs_sptep(vcpu->kvm, sptep);
+ kvm_flush_remote_tlbs_gfn(vcpu->kvm,
+ kvm_mmu_page_get_gfn(sp, sptep - sp->spt), 1);

if (!rmap_can_add(vcpu))
break;
--
2.31.1