[PATCH V3 4/13] KVM/MMU: Flush tlb directly in the kvm_handle_hva_range()

From: Tianyu Lan
Date: Wed Sep 26 2018 - 23:50:47 EST


This patch is to flush tlb directly in the kvm_handle_hva_range()
when range flush is available.

Signed-off-by: Lan Tianyu <Tianyu.Lan@xxxxxxxxxxxxx>
---
arch/x86/kvm/mmu.c | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index d10d8423e8d6..877edae0401f 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1888,6 +1888,13 @@ static int kvm_handle_hva_range(struct kvm *kvm,
&iterator)
ret |= handler(kvm, iterator.rmap, memslot,
iterator.gfn, iterator.level, data);
+
+ if (ret && kvm_available_flush_tlb_with_range()) {
+ kvm_flush_remote_tlbs_with_address(kvm,
+ gfn_start,
+ gfn_end - gfn_start);
+ ret = 0;
+ }
}
}

--
2.14.4