Re: [PATCH V4 6/15] KVM/MMU: Flush tlb directly in the kvm_set_pte_rmapp()

[Paolo Bonzini]

On 13/10/2018 16:53, lantianyu1...@gmail.com wrote:
> @@ -1781,6 +1781,11 @@ static int kvm_set_pte_rmapp(struct kvm *kvm, struct 
> kvm_rmap_head *rmap_head,
>   }
>   }
>  
> + if (need_flush && kvm_available_flush_tlb_with_range()) {
> + kvm_flush_remote_tlbs_with_address(kvm, gfn, 1);
> + return 0;
> + }
> +

Here you're passing an L1 GPA, not an L2 GPA.  Is it correct?

Paolo
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[PATCH V4 6/15] KVM/MMU: Flush tlb directly in the kvm_set_pte_rmapp()

[lantianyu1986]

From: Lan Tianyu 

This patch is to flush tlb directly in the kvm_set_pte_rmapp()
and return 0.

Signed-off-by: Lan Tianyu 
---
 arch/x86/kvm/mmu.c | 5 +
 1 file changed, 5 insertions(+)

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 5d3a180c57e2..f3742ff4ec18 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1781,6 +1781,11 @@ static int kvm_set_pte_rmapp(struct kvm *kvm, struct 
kvm_rmap_head *rmap_head,
}
}
 
+   if (need_flush && kvm_available_flush_tlb_with_range()) {
+   kvm_flush_remote_tlbs_with_address(kvm, gfn, 1);
+   return 0;
+   }
+
return need_flush;
 }
 
-- 
2.14.4

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