kvm_mmu_zap_collapsible_spte() returns flush request to the
slot_handle_leaf() and the latter does flush on demand. When
range flush is available, make kvm_mmu_zap_collapsible_spte()
to flush tlb with range directly to avoid returning range back
to slot_handle_leaf().
Signed-off-by: Lan Tianyu <tianyu....@microsoft.com>
---
arch/x86/kvm/mmu.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 56538fa6c017..85a81a62e0a7 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -5674,7 +5674,13 @@ static bool kvm_mmu_zap_collapsible_spte(struct kvm *kvm,
!kvm_is_reserved_pfn(pfn) &&
PageTransCompoundMap(pfn_to_page(pfn))) {
drop_spte(kvm, sptep);
- need_tlb_flush = 1;
+
+ if (kvm_available_flush_tlb_with_range())
+ kvm_flush_remote_tlbs_with_address(kvm, sp->gfn,
+ KVM_PAGES_PER_HPAGE(sp->role.level));
+ else
+ need_tlb_flush = 1;
+
goto restart;
}
}
--
2.14.4
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