diff options
| author | Hou Wenlong <houwenlong.hwl@antgroup.com> | 2022-10-10 20:19:15 +0800 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2023-01-24 10:05:47 -0800 |
| commit | 1b2dc7360463932d2e7cac9461de16ce6fa11cb7 (patch) | |
| tree | 51bf439e4b18738c08af52dadca5ce48b51b27b1 /arch/x86/kvm/mmu/paging_tmpl.h | |
| parent | 1e203847aa9245bd782d6dc904ece124ca1b89cb (diff) | |
KVM: x86/mmu: Fix wrong start gfn of tlb flushing with range
When a spte is dropped, the start gfn of tlb flushing should be the gfn
of spte not the base gfn of SP which contains the spte. Also introduce a
helper function to do range-based flushing when a spte is dropped, which
would help prevent future buggy use of
kvm_flush_remote_tlbs_with_address() in such case.
Fixes: c3134ce240eed ("KVM: Replace old tlb flush function with new one to flush a specified range.")
Suggested-by: David Matlack <dmatlack@google.com>
Signed-off-by: Hou Wenlong <houwenlong.hwl@antgroup.com>
Link: https://lore.kernel.org/r/72ac2169a261976f00c1703e88cda676dfb960f5.1665214747.git.houwenlong.hwl@antgroup.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'arch/x86/kvm/mmu/paging_tmpl.h')
| -rw-r--r-- | arch/x86/kvm/mmu/paging_tmpl.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/x86/kvm/mmu/paging_tmpl.h b/arch/x86/kvm/mmu/paging_tmpl.h index faf193e97061..57f0b75c80f9 100644 --- a/arch/x86/kvm/mmu/paging_tmpl.h +++ b/arch/x86/kvm/mmu/paging_tmpl.h @@ -927,8 +927,7 @@ 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_with_address(vcpu->kvm, - sp->gfn, KVM_PAGES_PER_HPAGE(sp->role.level)); + kvm_flush_remote_tlbs_sptep(vcpu->kvm, sptep); if (!rmap_can_add(vcpu)) break; |