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Subject: [PATCH V3 4/10] KVM/MMU: Use range flush in sync_page()
Date:   Fri, 22 Feb 2019 23:06:31 +0800
Message-Id: <20190222150637.2337-5-Tianyu.Lan@microsoft.com>
In-Reply-To: <20190222150637.2337-1-Tianyu.Lan@microsoft.com>
References: <20190222150637.2337-1-Tianyu.Lan@microsoft.com>
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From: Lan Tianyu <Tianyu.Lan@microsoft.com>

This patch is to use range flush to flush tlbs of input struct
kvm_mmu_page in the sync_page(). If range flush is not available,
kvm_flush_remote_tlbs_with_address() will call kvm_flush_remote_tlbs().

Signed-off-by: Lan Tianyu <Tianyu.Lan@microsoft.com>
---
 arch/x86/kvm/paging_tmpl.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
index 6bdca39829bc..768c5c64e3f8 100644
--- a/arch/x86/kvm/paging_tmpl.h
+++ b/arch/x86/kvm/paging_tmpl.h
@@ -1033,8 +1033,9 @@ static int FNAME(sync_page)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp)
 					 true, false, host_writable);
 	}
 
-	if (set_spte_ret & SET_SPTE_NEED_REMOTE_TLB_FLUSH)
-		kvm_flush_remote_tlbs(vcpu->kvm);
+
+	kvm_flush_remote_tlbs_with_address(vcpu->kvm, sp->gfn,
+			KVM_PAGES_PER_HPAGE(sp->role.level + 1));
 
 	return nr_present;
 }
-- 
2.14.4