Patchwork [Resend,V5,9/10] KVM/MMU: Flush tlb directly in the kvm_set_pte_rmapp()

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Submitter 蓝天宇
Date Dec. 6, 2018, 1:21 p.m.
Message ID <20181206132113.2691-10-Tianyu.Lan@microsoft.com>
Download mbox | patch
Permalink /patch/674153/
State New
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Comments

蓝天宇 - Dec. 6, 2018, 1:21 p.m.
From: Lan Tianyu <Tianyu.Lan@microsoft.com>

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

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

Patch

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 3b0f60e88f54..64bd848f021e 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1776,6 +1776,11 @@  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;
 }